Recent Questions - Unix & Linux Stack Exchange

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• How to distribute files per directories based on names of these files?
• Add commas in place of number with sed?
• Given Size in Terminal Row and Column units, how to calculate equivalent number pixels
• Debian 11 - How can i lower the load on my server?
• Deleted Kali identifier but still it shows in bios
• Different Plugins for Different Filetypes Neovim
• PPP0 Client Routing
• is it possible to use wireshark to capture https request that send from localhost node server
• How to view OpenVPN connections?
• split file by awk
• Why bash histroy rewrite IP and User data
• XMP and GPU Crash
• Terminal Specific Aliases
• Which is more reliable, $DESKTOP_SESSION or $XDG_CURRENT_DESKTOP
• NixOS: Ensure root-level folder exists
• Btrfs and lack of free disk space
• Keyboard not working during Debian Install on LG Ultra laptop
• initramfs got corrupted/ misconfigured, how to boot properly?
• Joining hosts to freeIPA without changing hostname
• How do I add a command to zsh history?
• strace write calls to stdout
• how can I set a right click and open terminal in context menu
• Unable to install Mongodb on linux mint
• How to use existing partitioning when re-installing Debian?
• Should isohybrid work on all iso media, for example Windows 7?
• Configuring device's wifi settings through SSH
• Yum Corrupted on RHEL 6
• Equivalent of update-grub for RHEL/Fedora/CentOS systems?
• How to view the output of a running process in another bash session?

How to distribute files per directories based on names of these files? Posted: 23 Jul 2022 11:11 AM PDT I have camera pictures stored in files with names 192.168.33.16_01_20220723150356205_MOTION_DETECTION.jpg I want to move each file into separate directory per date I found that command find | awk '{print $1, substr($1,20,8)}' prints tuples of filenames and desired target directory Can I pipe output of this command to command like mkdir -p $2; mv $1 $2 somehow? May be with xargs?

Add commas in place of number with sed? Posted: 23 Jul 2022 11:16 AM PDT Trying to write a simple script to fetch ethereum price and format the response. Here is what I've tried: #!/bin/bash response=$(curl 'https://min-api.cryptocompare.com/data/price?fsym=ETH&tsyms=GBP') price=$(echo $response | grep -o -P '(?<=:).*(?=})') formattedPrice=$(echo "${price%.*}" | sed 's/\([[:digit:]]\{3\}\)\([[:digit:]]\{3\}\)\([[:digit:]]\{3\}\)/\1,\2,\3/g') echo "£$formattedPrice" Although it doesn't add the commas.

Given Size in Terminal Row and Column units, how to calculate equivalent number pixels Posted: 23 Jul 2022 10:14 AM PDT I have a program which makes available 2 shell variables $width and $height, which are the desired width and desired height in "rows" and "columns" of an output (in this case a sixel image) to the terminal. How would I go about converting these $height and $width values from row/column units to pixel units? #!/bin/bash pixelsperrow=# How pixelspercolumn=# How heightpixels=$(($height*$pixelsperrow)) widthpixels=$(($width*$pixelspercolumn)) I also noticed my terminal emulator (foot) provides an environment variable $COLUMNS which is the current number of column available in the terminal window. I am using river (a wayland tiling window manager) as my WM if that is relevant.

Debian 11 - How can i lower the load on my server? Posted: 23 Jul 2022 11:06 AM PDT I'm currently running a Debian 11 with a load average of 4. I want to lower this load - But i don't really know where to start, like a first step on at least the analisis part... It's a Docker Server, with MySQL, Below a few commands and its outputs, to give some overview of the server. Processes: administrator@srv-docker:~$ top -b -n 1 | head -n 20 top - 12:56:41 up 12 days, 4:28, 1 user, load average: 4,19, 4,16, 4,14 Tasks: 242 total, 1 running, 241 sleeping, 0 stopped, 0 zombie %Cpu(s): 1,4 us, 2,1 sy, 0,0 ni, 81,6 id, 14,9 wa, 0,0 hi, 0,0 si, 0,0 st MiB Mem : 7955,3 total, 131,5 free, 1877,4 used, 5946,4 buff/cache MiB Swap: 0,0 total, 0,0 free, 0,0 used. 5733,5 avail Mem PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 775840 systemd+ 20 0 4996956 973276 35944 S 11,8 11,9 1019:50 mysqld 1856787 adminis+ 20 0 10480 3956 3372 R 11,8 0,0 0:00.03 top 1 root 20 0 164224 10424 7656 S 5,9 0,1 0:11.93 systemd 1184306 472 20 0 1974008 119776 60416 S 5,9 1,5 10:40.71 grafana-server 2 root 20 0 0 0 0 S 0,0 0,0 0:00.67 kthreadd 3 root 0 -20 0 0 0 I 0,0 0,0 0:00.00 rcu_gp 4 root 0 -20 0 0 0 I 0,0 0,0 0:00.00 rcu_par_gp 6 root 0 -20 0 0 0 I 0,0 0,0 0:00.00 kworker/0:0H-events_highpri 8 root 0 -20 0 0 0 I 0,0 0,0 0:00.00 mm_percpu_wq 9 root 20 0 0 0 0 S 0,0 0,0 0:00.00 rcu_tasks_rude_ 10 root 20 0 0 0 0 S 0,0 0,0 0:00.00 rcu_tasks_trace 11 root 20 0 0 0 0 S 0,0 0,0 3:07.86 ksoftirqd/0 12 root 20 0 0 0 0 I 0,0 0,0 21:54.79 rcu_sched Memory: administrator@srv-docker:~$ free -mh total used free shared buff/cache available Mem: 7,8Gi 1,8Gi 125Mi 49Mi 5,8Gi 5,6Gi Swap: 0B 0B 0B IO Stat: root@srv-docker:~# iostat -m Linux 5.10.0-16-amd64 (srv-docker) 23/07/2022 _x86_64_ (8 CPU) avg-cpu: %user %nice %system %iowait %steal %idle 0,92 0,00 1,12 9,31 0,00 88,65 Device tps MB_read/s MB_wrtn/s MB_dscd/s MB_read MB_wrtn MB_dscd dm-0 0,03 0,00 0,00 0,00 757 54 2965 dm-1 0,22 0,00 0,00 0,00 351 1863 758 dm-2 0,00 0,00 0,00 0,00 2 0 0 dm-3 0,00 0,00 0,00 0,00 3 4 0 dm-4 0,01 0,00 0,00 0,00 15 136 3578 dm-5 204,93 0,00 1,90 0,01 3929 2009381 12419 sda 155,93 0,00 1,82 0,02 5071 1919118 20230 sr0 0,00 0,00 0,00 0,00 0 0 0 VM Stat: root@srv-docker:~# vmstat procs -----------memory---------- ---swap-- -----io---- -system-- ------cpu----- r b swpd free buff cache si so bi bo in cs us sy id wa st 1 0 0 140500 216556 5868484 0 0 1 233 5 3 1 1 89 9 0 Perf top: MP Stat: root@srv-docker:~# mpstat -P ALL Linux 5.10.0-16-amd64 (srv-docker) 23/07/2022 _x86_64_ (8 CPU) 15:04:53 CPU %usr %nice %sys %iowait %irq %soft %steal %guest %gnice %idle 15:04:53 all 0,92 0,00 0,67 9,31 0,00 0,46 0,00 0,00 0,00 88,65 15:04:53 0 1,14 0,00 0,80 7,02 0,00 1,05 0,00 0,00 0,00 90,00 15:04:53 1 0,67 0,00 0,64 27,24 0,00 0,46 0,00 0,00 0,00 70,99 15:04:53 2 1,13 0,00 0,86 12,72 0,00 0,50 0,00 0,00 0,00 84,79 15:04:53 3 0,70 0,00 0,47 3,16 0,00 0,29 0,00 0,00 0,00 95,38 15:04:53 4 1,11 0,00 0,84 10,40 0,00 0,41 0,00 0,00 0,00 87,24 15:04:53 5 0,74 0,00 0,46 2,82 0,00 0,27 0,00 0,00 0,00 95,71 15:04:53 6 1,14 0,00 0,82 8,55 0,00 0,39 0,00 0,00 0,00 89,10 15:04:53 7 0,71 0,00 0,45 2,66 0,00 0,28 0,00 0,00 0,00 95,90 Please, can someone help me? Thanks in advance... Any light is appreciate it.

Deleted Kali identifier but still it shows in bios Posted: 23 Jul 2022 10:13 AM PDT Previously I had installed Kali Linux but few days later I deleted it. The way I did it (1) was to first delete the partition then using diskpart and rd. Still it was showing on my BIOS. So (2) I deleted the identifier. But recently it popped up again on my BIOS. In firmware except the windows boot manager there are 5 other firmwares. Their descriptions are: windows boot manager, Debian, EFI USB, EFI DVD/CDROM, EFI Network. No matter how many times I delete Kali identifier it still shows in the BIOS. But it doesn't show in the firmware list.

Different Plugins for Different Filetypes Neovim Posted: 23 Jul 2022 09:37 AM PDT I've used Neovim in the past for writing LaTex documents and have found that experience pretty great. I'm considering expanding my usage so that it becomes my daily driver for software development. However, I have no idea how I'd make it so that I could use different plugins for different filetypes which, I'd assume, would be necessary. Am I overcomplicating this? What would the usual workflow look like? I'll be working with: LaTex C, C++, C# Flutter/Dart Typescript/JS VHDL MatLab Please note, I'm not asking for how to set it up for each of these languages, that would be far too much for one question, just how to have different configs for each language without having to manually swap config files in and out.

PPP0 Client Routing Posted: 23 Jul 2022 09:32 AM PDT Firstly, my knowledge of routing and network architecture is basic. I apologise if this is extremely low level. I have a raspberry pi with two interfaces - eth0 and ppp0 . The pi is also hosting dnsmasq, running dhcp and dns server. My "main" network is running on eth0 - my gateway address is 192.168.0.1 and pi is 192.168.0.2, with other devices connecting on 192.168.0.1xx. I have also now successfully been able to connect external devices via ppp interfaces (xl2tpd and IPsec). The IP address of the pi on this interface is 192.168.20.1, and peers connect on 192.168.20.2. However when I connect I cannot see anything behind the 192.168.20.1 server. I would like to route to my internal network and ultimately through the default gateway (192.168.0.1). I am not 100% whether this should be a routing solution of forwarding. However my gut is saying that routing is probably the best solution! I apologise if this is a little bit muddled, if you require any further clarification please let me know. I am just fried trying to solve this, and have tried to create static routes with no success! Any help would be greatly appreciated!

is it possible to use wireshark to capture https request that send from localhost node server Posted: 23 Jul 2022 08:59 AM PDT I am trying to use wireshark to decrypt the https request. I have tried to write the tls key to local folder by setting: export SSLKEYLOGFILE=~/apps/wireshark/debug.log it works fine when I using google chrome to access the https website. But I could not capture the http request that send from localhost Node server. is it possible to capture the https that send from localhost Node server? what should I do to make it capture success? The full http workflow look like this: http request tools(local machine) -> localhost node server(local machine) -> remote cloud service(remote machine)

How to view OpenVPN connections? Posted: 23 Jul 2022 09:13 AM PDT I want to view the open connections between my OpenVPN client and server via the server. Not sure how to do this as tcpdump does not show anything, yet OpenVPN is working and running. Again, when SSHing into my OpenVPN servers, all I can see are my SSH packets being sent over and nothing for OpenVPN. Why? Thanks!

split file by awk Posted: 23 Jul 2022 08:41 AM PDT Here is my file which contains three columns and separate by "\t", and the delimiter of the second column is a space 1 a b tom 2 a b c sim 3 a mary 4 o l shey 5 c bob I want to get the first file which the second column contains multiple elements 1 a b tom 2 a b c sim 4 o l shey and then I want to get the second file like this 1 a tom 1 b tom 2 a sim 2 b sim 2 c sim 4 o shey 4 l shey Actually, i have tried that awk -F\\t 'BEGIN {OFS=FS} {n=split($2,aa,",");for (i=1;i<=n;i++) {$2=aa[i]; printf "%s\n" $0 }}' but it looks like didn't work. Can you give me some advice? thanks.

Why bash histroy rewrite IP and User data Posted: 23 Jul 2022 10:41 AM PDT I'm use HISTTIMEFORMAT like this: HISTFILESIZE=4000 HISTSIZE=4000 USER_IP="`echo $SSH_CLIENT | awk '{ print $1}'`" USER_FIO=($USER_RYBAV $USER_TROVL) HISTTIMEFORMAT="%d/%m/%y %T $USER_IP:$USER_FIO | " export HISTTIMEFORMAT and in .ssh/authorized_keys environment="USER_TROVL=torvalds.linux" ssh-rsa AAAAB3N.... environment="USER_RYBAV=rybafing.valing" ssh-rsa AAAAB3.... And when I'm login by 1 rsa, I got in history: 178 22/07/22 16:48:07 10.100.19.204:torvalds.linux exit 179 22/07/22 16:48:12 10.100.19.204:torvalds.linux lsblk 180 22/07/22 16:48:14 10.100.19.204:torvalds.linux history When I'm loggin by 2 rsa: 178 22/07/22 16:48:07 10.100.19.204:rybafing.valing exit 179 22/07/22 16:48:12 10.100.19.204:rybafing.valing lsblk 180 22/07/22 16:48:14 10.100.19.204:rybafing.valing history 181 22/07/22 16:48:18 10.100.19.204:rybafing.valing exit 182 22/07/22 16:48:30 10.100.19.204:rybafing.valing lsblk How you can see $USER_FIO from .bash_profile rewriting at any connection with different keys and env. I expect no rewrite user logins: 178 22/07/22 16:48:07 10.100.19.204:**torvalds.linux** exit 179 22/07/22 16:48:12 10.100.19.204:**torvalds.linux** lsblk 180 22/07/22 16:48:14 10.100.19.204:**torvalds.linux** history 181 22/07/22 16:48:18 10.100.19.204:rybafing.valing exit 182 22/07/22 16:48:30 10.100.19.204:rybafing.valing lsblk

XMP and GPU Crash Posted: 23 Jul 2022 08:04 AM PDT I have a question mostly related to hardware, if by any chance someone have an idea I might try. I was experiencing random crash lately, 2/3 times a day, and logs pointed out GPU errors. Never really the same, mostly: [drm:amdgpu_cs_ioctl [amdgpu]] *ERROR* Failed to initialize parser -125! But also for example: amdgpu: SMU load firmware failed amdgpu: 81 │ failed to send message 302 ret is 0 So after going down the rabbit hole, updating mesa, amd drivers and co. I figured out the problem started when I changed my RAM... And enabled XMP. Previously my RAM were 2400 MHz and I upgraded to 3600 MHz (supported by my MOBO). Some specs: Mother board: MSI Z390-A PRO Current RAM: 2 x Corsair Vengeance LPX 16GB DDR4 3600 (‎CMK32GX4M2D3600C18) Previous RAM 4 x Corsair Vengeance LPX 4GB DDR4 2400 (‎CMK8GX4M2A2400C16) GPU: Sapphire Nitro+ Radeon RX 570 4Go GDDR5 So everything worked great with my previous 2400 MHz and not with my 3600 MHz with XMP. Now I run without XMP at 2133 MHz, but no freeze. So I guess it must be a XMP parameter of some sort, some kind of under voltage. Well, I know nothing about that, just used my BIOS to do it automatically. I looked it up a bit, it seems that my current RAM needed 1,35V and that was indeed the voltage provided by my system.

Terminal Specific Aliases Posted: 23 Jul 2022 08:01 AM PDT Is there a way to have a terminal specific alias? For example: I want to use "vim" and "nvim" to refer to vanilla vim on terminal.app but I want "vim" and "nvim" to refer to NeoVim on Iterm2.

Which is more reliable, $DESKTOP_SESSION or $XDG_CURRENT_DESKTOP Posted: 23 Jul 2022 07:42 AM PDT Which environment variable has better support. I know that desktops like GNOME or Plasma will definitely support both, but for other sessions (like i3wm, LXDE or enlightenment), which one would have better support / standardisation?

NixOS: Ensure root-level folder exists Posted: 23 Jul 2022 07:56 AM PDT At work we tend to keep our large code workspaces under a /scratch folder. Is there a NixOS option to declare such a folder/file should exist? I know about environment.etc which will setup symlink from /etc into the nix store. Otherwise I'd have to resort to declare some systemd boot-up script, doing mkdir -p and so on - which feels ugly.

Btrfs and lack of free disk space Posted: 23 Jul 2022 08:00 AM PDT Good afternoon! I was in the process of writing files via rsync and had enough free disk space, but I am using btrfs and btrfs shows that the free space has run out. Can you please tell me how to deal with this situation? I deleted unnecessary files, but it didn't help. Can you please tell me how to make the system work again? Judging by the output of the du utility, I should still have about 150 GB. Additional info: ❯ df -h | grep "sda" /dev/sda4 515G 513G 5,6M 100% / /dev/sda4 515G 513G 5,6M 100% /var/log /dev/sda4 515G 513G 5,6M 100% /home /dev/sda4 515G 513G 5,6M 100% /var/cache /dev/sda1 996M 1,5M 995M 1% /boot/efi ❯ mount | egrep "sda" /dev/sda4 on / type btrfs (rw,noatime,compress=zstd:3,space_cache,autodefrag,subvolid=815,subvol=/@) /dev/sda4 on /var/log type btrfs (rw,noatime,compress=zstd:3,space_cache,autodefrag,subvolid=260,subvol=/@log) /dev/sda4 on /home type btrfs (rw,noatime,compress=zstd:3,space_cache,autodefrag,subvolid=814,subvol=/@home) /dev/sda4 on /var/cache type btrfs (rw,noatime,compress=zstd:3,space_cache,autodefrag,subvolid=259,subvol=/@cache) /dev/sda1 on /boot/efi type vfat (rw,relatime,fmask=0077,dmask=0077,codepage=437,iocharset=ascii,shortname=mixed,utf8,errors=remount-ro) [root@localhost]# du -sh / 2> /dev/null 346G / [root@localhost]# btrfs fi df / Data, single: total=506.52GiB, used=506.51GiB System, DUP: total=8.00MiB, used=80.00KiB Metadata, DUP: total=4.00GiB, used=2.71GiB GlobalReserve, single: total=512.00MiB, used=0.00B [root@localhost]# btrfs fi usage / Overall: Device size: 514.53GiB Device allocated: 514.53GiB Device unallocated: 1.03MiB Device missing: 0.00B Used: 511.92GiB Free (estimated): 5.31MiB (min: 5.31MiB) Free (statfs, df): 5.31MiB Data ratio: 1.00 Metadata ratio: 2.00 Global reserve: 512.00MiB (used: 0.00B) Multiple profiles: no Data,single: Size:506.52GiB, Used:506.51GiB (100.00%) /dev/sda4 506.52GiB Metadata,DUP: Size:4.00GiB, Used:2.71GiB (67.64%) /dev/sda4 8.00GiB System,DUP: Size:8.00MiB, Used:80.00KiB (0.98%) /dev/sda4 16.00MiB Unallocated: /dev/sda4 1.03MiB Update: [root@localhost]# echo " Total Exclusive Set shared Filename"; find . -maxdepth 1 -type d | grep './' | xargs -I{} btrfs filesystem du -s {} 2> /dev/null | grep -v 'Total' Total Exclusive Set shared Filename 266.01GiB 67.92GiB 189.58GiB ./home 64.89GiB 7.96GiB 56.93GiB ./var 111.59MiB 34.20MiB 77.39MiB ./boot 6.76MiB 2.52MiB 3.79MiB ./etc 0.00B 0.00B 0.00B ./mnt 1.06GiB 113.59MiB 582.69MiB ./opt 0.00B 0.00B 0.00B ./srv 8.77GiB 5.28GiB 2.34GiB ./usr [root@localhost]# btrfs subvolume list -t --sort=path / ID gen top level path -- --- --------- ---- 815 235310 5 @ 259 235014 5 @cache 814 235315 5 @home 260 235315 5 @log 450 233611 5 timeshift-btrfs/snapshots/2021-10-18_19-59-20/@ 451 5639 5 timeshift-btrfs/snapshots/2021-10-18_19-59-20/@home 536 233611 5 timeshift-btrfs/snapshots/2021-11-23_22-48-30/@ 537 13984 5 timeshift-btrfs/snapshots/2021-11-23_22-48-30/@home 545 233611 5 timeshift-btrfs/snapshots/2021-12-12_18-12-40/@ 546 17778 5 timeshift-btrfs/snapshots/2021-12-12_18-12-40/@home 257 233611 5 timeshift-btrfs/snapshots/2022-05-02_13-10-31/@ 258 229392 5 timeshift-btrfs/snapshots/2022-05-02_13-10-31/@home 894 233611 5 timeshift-btrfs/snapshots/2022-06-08_20-38-08/@ 895 215821 5 timeshift-btrfs/snapshots/2022-06-08_20-38-08/@home 896 233611 5 timeshift-btrfs/snapshots/2022-06-08_21-09-00/@ 897 215918 5 timeshift-btrfs/snapshots/2022-06-08_21-09-00/@home 923 233611 5 timeshift-btrfs/snapshots/2022-06-28_19-06-50/@ 924 229388 5 timeshift-btrfs/snapshots/2022-06-28_19-06-50/@home [root@localhost]# timeshift --list Mounted '/dev/sda4' at '/run/timeshift/3351/backup' Device : /dev/sda4 UUID : d0a8bc03-a8d9-470e-8868-ec49b1d4f9dc Path : /run/timeshift/3351/backup Mode : BTRFS Status : OK 7 snapshots, 2.3 GB free Num Name Tags Description ------------------------------------------------------------------------------ 0 > 2021-10-18_19-59-20 O {timeshift-autosnap} {created before upgrade} 1 > 2021-11-23_22-48-30 O {timeshift-autosnap} {created before upgrade} 2 > 2021-12-12_18-12-40 O {timeshift-autosnap} {created before upgrade} 3 > 2022-05-02_13-10-31 O {timeshift-autosnap} {created before upgrade} 4 > 2022-06-08_20-38-08 O {timeshift-autosnap} {created before upgrade} 5 > 2022-06-08_21-09-00 O {timeshift-autosnap} {created before upgrade} 6 > 2022-06-28_19-06-50 O {timeshift-autosnap} {created before upgrade} Found stale mount for device '/dev/sda4' at path '/run/timeshift/3351/backup' Unmounted successfully Update 07/17/22: [root@localhost]# btrfs filesystem du -s / 2> /dev/null Total Exclusive Set shared Filename 340.59GiB 81.30GiB 249.14GiB / How do I know what the 511.92GiB is made up of? [root@localhost]# btrfs fi usage / Overall: Device size: 514.53GiB Device allocated: 514.53GiB Device unallocated: 1.03MiB Device missing: 0.00B Used: 511.92GiB EDIT 7/23/22: I deleted some timeshift snapshots, the used disk space decreased, now it shows the following data: % # df -h | grep '/dev/s' /dev/sda4 515G 393G 118G 77% / tmpfs 7,8G 22M 7,8G 1% /dev/shm /dev/sda4 515G 393G 118G 77% /var/cache /dev/sda4 515G 393G 118G 77% /var/log /dev/sda4 515G 393G 118G 77% /home /dev/sda1 996M 1,5M 995M 1% /boot/efi /dev/sda4 515G 393G 118G 77% /mnt/sda4 % btrfs filesystem df -h / Data, single: total=439.01GiB, used=388.90GiB System, DUP: total=8.00MiB, used=80.00KiB Metadata, DUP: total=4.00GiB, used=1.49GiB GlobalReserve, single: total=512.00MiB, used=0.00B % mkdir /mnt/sda4 && mount -o subvol=/ /dev/sda4 /mnt/sda4 && btdu /mnt/sda4 --- /<SINGLE>/<DATA> ------------------------------------------------------------------------------------------------------------------------------------------------------------------------- ~572.9 KiB [ ] <NO_INODE> ~111.2 MiB [ ] /<ROOT_TREE> ~50.1 GiB [# ] <SLACK> ~18.4 GiB [ ] /<UNREACHABLE> ~62.7 GiB [## ] /@ ~6.26 GiB [ ] /@cache ~284.5 GiB [##########] /@home ~480.8 MiB [ ] /@log ~16.4 GiB [ ] /timeshift-btrfs --- Details: --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- - Full path: /mnt/sda4 - Average query duration: 0.0003639 seconds - Represented size: ~439.0 GiB (68296505 samples), ±10.1 MiB - Logical offsets: ..., 485646549606, 442831113925, 525544520914 --- Explanation: This node holds samples from chunks in the DATA block group, which mostly contains file data. In general, deleting some of the snapshots helped, after that the timeshift showed a display of busy disk space. A screenshot is attached: Unfortunately, btdu did not answer the question of what makes up the 388 Gb of occupied disk space, as in the conclusion attached above: --- /<SINGLE>/<DATA> ------------------------------------------------------------------------------------------------------------------------------------------------------------------------- ~572.9 KiB [ ] <NO_INODE> ~111.2 MiB [ ] /<ROOT_TREE> ~50.1 GiB [# ] <SLACK> ~18.4 GiB [ ] /<UNREACHABLE> ~62.7 GiB [## ] /@ ~6.26 GiB [ ] /@cache ~284.5 GiB [##########] /@home ~480.8 MiB [ ] /@log ~16.4 GiB [ ] /timeshift-btrfs --- Details: --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- - Full path: /mnt/sda4 - Average query duration: 0.0003639 seconds - Represented size: ~439.0 GiB (68296505 samples), ±10.1 MiB - Logical offsets: ..., 485646549606, 442831113925, 525544520914 % echo "62.7+6.26+284.5+0.48+16.4"|bc 370.34 Maybe the problem is that btdu gives approximate results? I didn't wait for the program to finish it ran for a few minutes.

Keyboard not working during Debian Install on LG Ultra laptop Posted: 23 Jul 2022 11:13 AM PDT During install of an LG ultra laptop ( 17U70P ), the mouse work correctly, but the keyboard stop reacting after booting into "Graphical Install". I was looking in the bios configuration, and found not specific option that could enable or restore this situation. The keyboard is required to connect to the wifi (I have an additional USB with the firmware). I have no external keyboard to test. How to get the laptop keyboard working during install? Related question, which did not solved my case: USB keyboard doesn't work with Debian installer linux /install.amd/vmlinuz vga=788 --- quiet noapic nolapic or linux /install.amd/vmlinuz vga=788 --- quite iommu=soft Did not worked, the first freeze, while the second keeps the keyboard not working.

initramfs got corrupted/ misconfigured, how to boot properly? Posted: 23 Jul 2022 07:32 AM PDT How to boot properly, fix the boot loader? Why my initramfs-fallback have higher size than newly created? (use mkinitcpio instead update-initramfs on arch) -rw------- 1 root root 29MB Mei 30 06:49 initramfs-5.10-x86_64-fallback.img -rw------- 1 root root 9MB Mei 30 06:48 initramfs-5.10-x86_64.img -rw------- 1 root root 9MB Mei 30 23:43 initramfs-subscribe-5.10-x86_64.img The initramfs is always missing for 8 month i just do via recovery fallback initramfs. What I notice is, even i do kernel update, it still missing. I assume it will be fixed when the newer kernels do post-transaction things. I do use dual boot, both arch and on a different drive (HDD and SDD). detailed config and the old story

Joining hosts to freeIPA without changing hostname Posted: 23 Jul 2022 08:45 AM PDT I've been asked to join linux hosts in my company to freeIPA. But the problem is that I'm not allowed to change hostnames. So I should leave hosts NetBios names intact. I am wondering if there is any idea to implement such a thing (like alias name for hostname or something)?

How do I add a command to zsh history? Posted: 23 Jul 2022 07:02 AM PDT I'd like to use a zsh script to append a command to the command history so that it appears when I hit the up arrow. I've been appending a line to ${HISTFILE}, and it shows up there as the last line, but the up arrow action appears to ignore it. I see that zsh maintains a session history in parallel to the history file, but I haven't yet seen a way to add to it, or to otherwise accomplish what I'm setting out to do. Is there a way to do it?

strace write calls to stdout Posted: 23 Jul 2022 08:30 AM PDT Is there a way to use strace to just show a process's stdout? I know I can do strace -p pid -e write but that shows calls to write(2) to multiple file descriptors. When reading the man page I also saw the -e write= option but I'm getting a bunch of other stuff when using strace -p pid -e write=1 Basically, I want the output of the first command (strace -p pid -e write) but only showing the write(1,... outputs. I know I could filter the output, but I'm wondering if there's a way for strace to do this directly.

how can I set a right click and open terminal in context menu Posted: 23 Jul 2022 11:00 AM PDT I am using Debian 10.1 See the following screenshot. I am used to a Ubuntu environment where I do a right click and terminal opens. Is this kind of a thing possible for Debian environment. If it is possible please let me know how can I enable it? If the same can be added to context menu like in the screenshot I see following three options 1)Change Background 2)Display Settings 3)Settings Here can I add the option in black menu in screenshot to open terminal (I am not referring to the Ctrl+Alt+T to open terminal) some how tweaking gnome? edit based on discussion below package gnome-tweak-tool and nautilus-extension-gnome-terminal were installed. Then when required setting were not found as in videos here 1)https://youtu.be/scOYZZIyoM4 2) https://www.youtube.com/watch?v=scOYZZIyoM4&feature=youtu.be gsettings get org.gnome.desktop.background show-desktop-icons has been set to true gsettings set org.gnome.desktop.background show-desktop-icons true Still the desired results have not been achieved. What I want is I do a right click on any area on my desktop and in the context menu I want to see an option to open terminal.

Unable to install Mongodb on linux mint Posted: 23 Jul 2022 08:06 AM PDT I cannot install Mongodb on my linux mint. Operating System: Linux Mint 19.1 Kernel: Linux 4.15.0-50-generic Architecture: x86-64 I followed official documentation. Import the public key used by the package management system $wget -qO - https://www.mongodb.org/static/pgp/server-4.0.asc | sudo apt-key add - Create a list file for MongoDB Ubuntu 18.04 (Bionic) $echo "deb [ arch=amd64 ] https://repo.mongodb.org/apt/ubuntu bionic/mongodb-org/4.0 multiverse" | sudo tee /etc/apt/sources.list.d/mongodb-org-4.0.list Reload local package $sudo apt-get update Install the MongoDB package $sudo apt-get install -y mongodb-org While installing got these errors: Reading package lists... Done Building dependency tree Reading state information... Done The following packages were automatically installed and are no longer required: icoutils libboost-program-options1.65.1 libgoogle-perftools4 libpcrecpp0v5 libtcmalloc-minimal4 libwine-development libwxgtk3.0-gtk3-0v5 libyaml-cpp0.5v5 mongodb-server-core python-wxgtk3.0 python-wxversion wine64-development Use 'sudo apt autoremove' to remove them. The following additional packages will be installed: mongodb-org-mongos mongodb-org-server mongodb-org-shell mongodb-org-tools The following NEW packages will be installed: mongodb-org mongodb-org-mongos mongodb-org-server mongodb-org-shell mongodb-org-tools 0 upgraded, 5 newly installed, 0 to remove and 245 not upgraded. Need to get 48.3 MB/73.0 MB of archives. After this operation, 267 MB of additional disk space will be used. Get:1 https://repo.mongodb.org/apt/ubuntu bionic/mongodb-org/4.0/multiverse amd64 mongodb-org-shell amd64 4.0.12 [9,865 kB] Get:2 https://repo.mongodb.org/apt/ubuntu bionic/mongodb-org/4.0/multiverse amd64 mongodb-org-tools amd64 4.0.12 [38.5 MB] Get:3 https://repo.mongodb.org/apt/ubuntu bionic/mongodb-org/4.0/multiverse amd64 mongodb-org amd64 4.0.12 [3,528 B] Fetched 48.3 MB in 31s (1,553 kB/s) Selecting previously unselected package mongodb-org-shell. (Reading database ... 349983 files and directories currently installed.) Preparing to unpack .../mongodb-org-shell_4.0.12_amd64.deb ... Unpacking mongodb-org-shell (4.0.12) ... Preparing to unpack .../mongodb-org-server_4.0.12_amd64.deb ... Unpacking mongodb-org-server (4.0.12) ... dpkg: error processing archive /var/cache/apt/archives/mongodb-org-server_4.0.12_amd64.deb (--unpack): trying to overwrite '/usr/bin/mongod', which is also in package mongodb-server-core 1:3.6.3-0ubuntu1.1 dpkg-deb: error: paste subprocess was killed by signal (Broken pipe) Preparing to unpack .../mongodb-org-mongos_4.0.12_amd64.deb ... Unpacking mongodb-org-mongos (4.0.12) ... dpkg: error processing archive /var/cache/apt/archives/mongodb-org-mongos_4.0.12_amd64.deb (--unpack): trying to overwrite '/usr/bin/mongos', which is also in package mongodb-server-core 1:3.6.3-0ubuntu1.1 dpkg-deb: error: paste subprocess was killed by signal (Broken pipe) Selecting previously unselected package mongodb-org-tools. Preparing to unpack .../mongodb-org-tools_4.0.12_amd64.deb ... Unpacking mongodb-org-tools (4.0.12) ... Selecting previously unselected package mongodb-org. Preparing to unpack .../mongodb-org_4.0.12_amd64.deb ... Unpacking mongodb-org (4.0.12) ... Errors were encountered while processing: /var/cache/apt/archives/mongodb-org-server_4.0.12_amd64.deb /var/cache/apt/archives/mongodb-org-mongos_4.0.12_amd64.deb E: Sub-process /usr/bin/dpkg returned an error code (1) Tried to start the DB $sudo service mongod start Failed to start mongod.service: Unit mongod.service not found. The code below gives the same error: sudo apt-get install -f Unable to remove mongodb-server-core: $ apt remove mongodb-server-core Reading package lists... Done Building dependency tree Reading state information... Done You might want to run 'apt --fix-broken install' to correct these. The following packages have unmet dependencies: mongodb-org : Depends: mongodb-org-server but it is not going to be installed Depends: mongodb-org-mongos but it is not going to be installed E: Unmet dependencies. Try 'apt --fix-broken install' with no packages (or specify a solution).

How to use existing partitioning when re-installing Debian? Posted: 23 Jul 2022 07:02 AM PDT I have Debian/Windows dual-boot laptop, and I want to re-install Debian on it, leaving the Windows partition untouched. Basically, I want to leave the specification for all the partitions the same. I just want the new Debian installation to completely overwrite the old one. When I get to this dialog in the installation sequence, I am not sure how to proceed to achieve the goal above: The settings above are already the way I want them, but if I select Finish partitioning and write changes to disk and click Continue, the installer complains with No root file system No root file system is defined. Please correct this from the partitioning menu. If I select #5 or #6, the installer requires me to re-specify all the configurations for each partition, without telling me what their current settings are. Since I don't know how these partitions are currently configured, I cannot replicate these configurations from memory. What steps should I follow to retain the partition specs as they are, and just overwrite the current Debian partition(s) (#5 and #6 in the listing above) with the new Debian installation?

Should isohybrid work on all iso media, for example Windows 7? Posted: 23 Jul 2022 09:54 AM PDT I have a an original Windows 7 Professional x86 iso file, straight from Microsoft. I want to make a bootable USB from this ISO. Some sources suggest that I simply dd the iso to the USB, but I don't see how that should work. The ISO's first 32768 bytes (reserved as System Area on ISO 9660 media, to be used fx for MBR) are all zeroes, so there is no MBR or anything for the BIOS to read. So as far as I can understand, one way is to add a MBR in this System Area, so that the ISO can be both dd'ed to a USB or written to an optical media, and be bootable from both. I think the tool isohybrid should do that trick. I don't know how it works, so I can't figure out if it should just work for all bootable (ie bootable if written to optical media) ISO 9660 files. Or does it only work for some specific/familiar iso files? At least I can't make it work with my Windows 7 iso. I get the following error: $ isohybrid win7.iso isohybrid: win7.iso: unexpected boot catalogue parameters

Configuring device's wifi settings through SSH Posted: 23 Jul 2022 09:01 AM PDT I just unpackaged a NVIDIA Jetson TX2 running Ubuntu 16.04 today and I am connecting to it with SSH while it's plugged in to my router via ethernet. I'd like to configure the TX2 to automatically connect to my wifi network so the physical connection is not necessary. I was hoping that copying my wifi config file located at /etc/NetworkManager/system-connections/ to the same location on the TX2 would be sufficient -- after running nmap to list hosts connected to my network, I'm now seeing that this is probably embarrassingly naive. Is there a way I can, through an SSH connection alone, setup the TX2 to automatically connect to my wifi on boot? Edit: I'm seeing posts like this one and this one which seem like they might lead me down the right path (modifying /etc/network/interfaces), but I honestly have no idea what I'm doing...

Yum Corrupted on RHEL 6 Posted: 23 Jul 2022 10:03 AM PDT . I am encountering the issue with my yum command. It seems to be exactly the same as the issue described on this site, Yum corrupted on CentOS 6.2, Problem importing one the python modules This will be the error produced whenever I execute the yum command. [root@Server1~]# yum list There was a problem importing one of the Python modules required to run yum. The error leading to this problem was: /lib64/libldap-2.4.so.2: undefined symbol: ber_sockbuf_io_udp Please install a package which provides this module, or verify that the module is installed correctly. It's possible that the above module doesn't match the current version of Python, which is: 2.6.6 (r266:84292, Nov 21 2013, 10:50:32) [GCC 4.4.7 20120313 (Red Hat 4.4.7-4)] If you cannot solve this problem yourself, please go to the yum faq at: http://yum.baseurl.org/wiki/Faq However I am able to run # python2 , which is located in /usr/bin/python2 [root@Server1~]# python2 Python 2.6.6 (r266:84292, Nov 21 2013, 10:50:32) [GCC 4.4.7 20120313 (Red Hat 4.4.7-4)] on linux2 Type "help", "copyright", "credits" or "license" for more information. \>>> These are the modules yum import:

Equivalent of update-grub for RHEL/Fedora/CentOS systems? Posted: 23 Jul 2022 09:07 AM PDT In Ubuntu (and I guess in Debian too) there is a system script named update-grub which automatically executes grub-mkconfig -o with the correct path for the grub configuration file. Is there any similar command for Red Hat based distributions? If not, how do the system knows where is the grub configuration file to update when a new kernel version is installed?

How to view the output of a running process in another bash session? Posted: 23 Jul 2022 08:37 AM PDT I have left a script running on a remote machine from when I was locally working at it. I can connect over SSH to the machine as the same user and see the script running in ps. $ ps aux | grep ipcheck myuser 18386 0.0 0.0 18460 3476 pts/0 S+ Dec14 1:11 /bin/bash ./ipchecker.sh It is simply outputting to stdout on a local session (I ran ./ipchecker.sh form a local terminal window, no redirection, no use of screen etc). Is there anyway from an SSH session I can view the output of this running command (without stopping it)? So far the best I have found is to use strace -p 18386 but I get hordes of text flying up the screen, its far too detailed. I can stop strace and then sift through the output and find the text bring printed to stdout but its very long and confusing, and obviously whilst it's stopped I might miss something. I would like to find a way to see the script output live as if I was working locally. Can anyone improve on this? The obvious answer is to restart the script with redirection or in a screen session etc, this isn't a mission critical script so I could do that. Rather though, I see this as a fun learning exercise.

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