| sudo apt update sudo apt upgrade updated all but firefox Posted: 23 Jul 2021 10:37 AM PDT Looking at "similar questions", I did not find my issue. When running: sudo apt update sudo apt upgrade, it updated all BUT firefox. Any suggestions/corrections?  |
| How to bind mount a directory on startup without sudo Posted: 23 Jul 2021 10:19 AM PDT NOTE: I'm working in WSL2, but my issues lies entirely within the Linux side of things. Please let me know if this is not the right place for this. I am needing to mount --bind a directory during startup, I'm using the following in .bashrc: if ! mountpoint -q -- "/mnt/wsl/$WSL_DISTRO_NAME"; then mount --bind --make-private / "/mnt/wsl/$WSL_DISTRO_NAME" fi
I am getting an [expected] error: only root can use "--bind" option. I have tried elevating my user privelege via /etc/sudoers: [myusername] ALL=(ALL) NOPASSWD: /bin/mount
I have also tried adding the following to /etc/fstab: / /mnt/wsl/Ubuntu-18.04 none bind,user 0 0
Yet nothing seems to work. I would like to accomplish this as responsibly as possible without giving my user permanent admin/root privilege... or any other similarly "lazy-ish" option.  |
| A start job for unit sddm.service has failed Posted: 23 Jul 2021 10:06 AM PDT i made a clean installation of debian with kdeplasma on my laptop, but i havent desktop environmet install project bumblebee also try reinstall kde but nothing of this works for me, my journal say this 
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| Meaning of the output from lsblk command Posted: 23 Jul 2021 10:21 AM PDT I have recently started using Linux and would love to know how to interpret the output from the lsblk -f command. More specifically, I would like to know the different partitions and sizes. - For instance, I understand that ext4 and xfs are different file systems in unix. But the entire picture has a tree structure. So I was wondering if the total number of partitions is 4, i.e.,sda1, sda2, sda3 and sdb.
- If so, then what are the sub-partitions (root, swap, home and var)?
- Also, is lvm2_member a filesystem too?
NAME FSTYPE LABEL MOUNTPOINT SIZE sda 1.1T ├─sda1 2M ├─sda2 xfs /boot 2G └─sda3 LVM2_member 1.1T ├─centos-root ext4 / 200G ├─centos-swap swap [SWAP] 128G ├─centos-var ext4 /var 10G └─centos-home ext4 /home 777G sdb ext4 data /data 81.9T loop1 squashfs 487.5M
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| ubuntu downgraded to 16.04 with a few issues Posted: 23 Jul 2021 09:21 AM PDT I have a laptop with Ubuntu 16.04 which has been used for countless things and is a mess of packages. A few weeks ago I further messed with it, as I needed to install ROS. I hammered it a little too much, and I found myself on 18.04. I was unaware that upgrading some packages to the version intended for a more recent release might have "unintended effects" and I also take the opportunity to warn everyone who might attempt the same thing. The scripts are strongly biased towards upgrading everything they can, and they don't ask for confirmation in an obvious manner (say "please confirm upgrade from 16.04 to 18.04") It took a lot to downgrade and I dissuade everyone, like the official Ubuntu documentation does. I would like to ask your help about a few issues. I am having some trouble with the graphic interfaces. I have xubuntu working, but it works correctly only if I login as root; gnome and the standard ubuntu do not work. I assume the upgrade scripts have made changes and I would have to revert, but I am rather clueless. I do not know if my graphic environment issues have to do with environmental variables, with having installed another graphic interface, or with some subtle preexisting problem. The whole mess came to be because I could not install the graphical interface of ROS; command line worked OK. now I am installing ROS again and some dependencies are incorrect; I realize that it is not straightforward to automatically decide which packages should be downgraded as the whole compiler toolchain was modified and backtracked, and I am willing to get my hands dirtier than they are already, but I would like to ask for some resources on correctly disentangling dependencies. The machine is old (latitude e6440 i7) and compiling from source would look like the most straightforward path, but is impractically slow. Thank you a lot  |
| How to find the escape sequence for `Shift + PageUp`/`Shift + PageDown`? Posted: 23 Jul 2021 09:32 AM PDT How can I find the escape sequence for Shift + PageUp/Shift + PageDown? I googled and tried a few suggestions, but what always happens is that the screen scrolls up/down when I press this, or nothing gets printed. I'm trying to get the escape sequence, so that I can assign it to the PageUp/PageDown function in Tmux, when I'm in a TTY/virtual console. As you might know, recent Linux kernels have removed this functionality. If it's relevant, some other Shift-related bindings I'm using in my terminal WezTerm: {key='UpArrow', mods='SHIFT', action=wezterm.action{SendString='\x1b[a'}}, {key='DownArrow', mods='SHIFT', action=wezterm.action{SendString='\x1b[b'}}, {key='LeftArrow', mods='SHIFT', action=wezterm.action{SendString='\x1b[d'}}, {key='RightArrow', mods='SHIFT', action=wezterm.action{SendString='\x1b[c'}},
Just giving an escape sequence that's in spirit with the above escape sequences is fine too.  |
| How to copy entire directory as is (failed to preserve ownership) Posted: 23 Jul 2021 10:06 AM PDT I am trying to prepare Raspberry Pi image to be netbooted. I have downloaded IMG file of raspbian (for ex 2017-07-05-raspbian-jessie) and mounted it locally to linux box. I got two partitions. Now I wish to copy them to nfs server location. If I do cp -a * /home/dims/nfstest/root
I get numerous errors like cp: failed to preserve ownership for '/home/dims/nfstest/root/etc/lighttpd': Operation not permitted
What does it mean and how to proceed?
It was because shared directory's owneship was nobody:nogroup. I don't know how it was affecting, so the answer is still interesting.  |
| ExecCondition doesn't prevent start of service Posted: 23 Jul 2021 09:29 AM PDT I have a service file with an ExecCondition that, when exits with status=1/FAILURE, doesn't prevent the start of the daemon. Which I believe, based on the documentation, should prevent the daemon from starting as well as prevent all other ExecStartPre commands from running. when an ExecCondition= command exits with exit code 1 through 254 (inclusive), the remaining commands are skipped and the unit is not marked as failed. systemd.service documentation I put in a condition that should fail every time in an obvious way. ExecCondition=-sh -c 'exit(1)' Here's the service file (with names changed to protect the innocent). [Unit] Description=Application Wants=x-ray.service yankee.service zulu.service Requires=alpha.service bravo.service After=x-ray.service charlie.service bravo.service [Service] ExecCondition=-sh -c 'exit(1)' ExecStartPre=-sh -c 'prestartShellScript.sh' ExecStart=/opt/app/app argument1 argument2 WatchdogSec=10 Restart=always RestartSec=10 WorkingDirectory=/opt/app TimeoutSec=10 [Install] WantedBy=multi-user.target
But when I start the service, using systemctl status app I see this showing the app is running and the other processes also ran: Active: active (running) since Fri 2020-02-07 18:06:57 UTC; 6s ago Process: 33783 ExecCondition=/bin/sh -c exit(1) (code=exited, status=1/FAILURE) Process: 33796 ExecStartPre=/bin/sh -c prestartShellScript.sh (code=exited, status=0/SUCCESS) Main PID: 33827 (app) Tasks: 19 (limit: 4177) Memory: 101.5M CGroup: /system.slice/app.service └─33827 /opt/app/app argument1 argument2
I've also changed my ExecCondition to ExecStartPre but I see the same behavior.  |
| How do I change my $EDITOR variable if it refuses to change? Posted: 23 Jul 2021 08:24 AM PDT I'm running Manjaro Linux in the KDE Plasma desktop environment. I'd like to be able to use the classic C-X C-E command to run Vim from a terminal emulator running Bash on the GUI desktop. However, when I try to change $EDITOR from /usr/bin/nano to /usr/bin/vim in my ~/.bash_profile, it fails to change in terminal emulators running on the GUI desktop. What could cause this, and how could I change it? In the virtual consoles, it works fine. I execute $ echo $EDITOR and the expected /usr/bin/vim appears. Other environment variables changed and added in .bash_profile appear as expected in terminal emulators on the desktop and in the virtual consoles, e.g. $ echo SDL_SOUNDFONTS returns /path/to/foo.sf2. When I execute $ export EDITOR=/usr/bin/vim or $ EDITOR=/usr/bin/vim; export EDITOR in a terminal emulator on the GUI desktop, the environment variable changes as expected to /usr/bin/vim. Likewise, if I add export EDITOR=/usr/bin/vim or EDITOR=/usr/bin/vim; export EDITOR to my .bashrc, then $ echo EDITOR returns /usr/bin/vim as expected in terminal emulators on the GUI desktop. However, I've seen it said that environment variables should be modified in ~/.bash_profile or ~/.profile, or even in /etc for variables set globally, but not in ~/.bashrc, which is why I've focused on ~/.bash_profile. At this point, I just want to satisfy my curiosity: What in the desktop environment could be changing $EDITOR to /usr/bin/nano over the instructions in my ~/.bash_profile? As far as I can tell, my .bashrc isn't the culprit, but I'm a new user and could easily have missed something important.  |
| Quickly check if file is a text (non-binary) file Posted: 23 Jul 2021 08:21 AM PDT I have a list of files where I want to filter out all non-text (binary) files. I know that I can use file to check the filetype, but this is abysmally slow for huge numbers of files (I have omitted the grep text | cut -d':' -f1 for brevity): ❯ find -type f | wc -l 3719 ❯ find -type f | time ( while read file; do file $file; done ) >/dev/null ( while read file; do; file $file; done; ) > /dev/null 10,08s user 4,92s system 99% cpu 15,019 total ❯ find -type f | time parallel file >/dev/null parallel file > /dev/null 21,49s user 12,36s system 468% cpu 7,229 total ❯ find -type f | time xargs file >/dev/null xargs file > /dev/null 4,39s user 0,04s system 99% cpu 4,444 total ❯ find -type f | time ( while read file; do case "$(head -c2 $file)" in ([[:print:]][[:print:]]) echo $file;; esac; done ) >/dev/null ( while read file; do; case "$(head -c2 $file)" in ([[:print:]][[:print:]]) 1,96s user 1,13s system 105% cpu 2,942 total
The last example above is the idea I pursued so far - read in the first few characters of a file and check whether they are printable. This will have to be adjusted to allow newlines though, and it isn't faster by a sufficient margin. I only need a heuristic that filters out most of the binary files, it does not have to be completely accurate.  |
| linux 2 interfaces 2 gateway routing problem Posted: 23 Jul 2021 08:30 AM PDT I have a server, running Oracle Linux 8.4 with 2 IP addresses on 2 nics: link/ether 34:48:ed:f6:d3:5c brd ff:ff:ff:ff:ff:ff inet 10.154.224.252/24 brd 10.154.224.255 scope global noprefixroute eno1 valid_lft forever preferred_lft forever inet6 fe80::3648:edff:fef6:d35c/64 scope link valid_lft forever preferred_lft forever 3: ens2f0np0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000 link/ether bc:97:e1:7a:41:e0 brd ff:ff:ff:ff:ff:ff inet 10.154.226.252/24 brd 10.154.226.255 scope global noprefixroute ens2f0np0 valid_lft forever preferred_lft forever inet6 fe80::be97:e1ff:fe7a:41e0/64 scope link valid_lft forever preferred_lft forever
So I created 2 table routing in /etc/iproute2/rt_tables db and app and script #!/bin/sh ip route add 10.154.226.0/24 dev ens2f0np0 src 10.154.226.252 table db ip route add default via 10.154.226.1 dev ens2f0np0 table db ip rule add from 10.154.226.252/24 table db ip rule add to 10.154.226.252/24 table db ip route add 10.154.224.0/24 dev eno1 src 10.154.224.252 table app ip route add default via 10.154.224.1 dev eno1 table app ip rule add from 10.154.224.252/24 table app ip rule add to 10.154.224.252/24 table app ip r command show: 10.154.224.0/24 dev eno1 proto kernel scope link src 10.154.224.252 metric 100 10.154.226.0/24 dev ens2f0np0 proto kernel scope link src 10.154.226.252 metric 100 192.168.122.0/24 dev virbr0 proto kernel scope link src 192.168.122.1 linkdown
i can connect to machine in any interface via ssh, but i cannot go out from server to internet, other subnets. Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 10.154.224.0 0.0.0.0 255.255.255.0 U 100 0 0 eno1 10.154.226.0 0.0.0.0 255.255.255.0 U 100 0 0 ens2f0np0 192.168.122.0 0.0.0.0 255.255.255.0 U 0 0 0 virbr0
Something I miss? How can i fix that?  |
| Count the number of ssh connections made from and to a solaris host per minute Posted: 23 Jul 2021 07:44 AM PDT The purpose of this exercise is to know the count of ssh connection that my ansible automation creates when it runs. /etc/centrifydc/ssh/sshd_config is the ssh utility that my automation uses.
My ansible on my localhost (linux) which connects to oracle@remotehost7 (solaris) and makes several ssh connections. I need a count of the number of such ssh connections made in the last 1 minute. I know how to list ssh connections using command ss | grep -i ssh Can someone please guide how to record the count of ssh connections made to remotehost7 in the last 1 minute?  |
| Pulseaudio can't capture audio on headphone Posted: 23 Jul 2021 07:44 AM PDT I was trying to install cava on Manjaro. I've configured the source correctly, but it gave an error. I've tried other sound visualizers (like vis) and same thing happened. It can't be a configuration problem, because the same thing happens on the KDE audio preview (when you play an audio and it shows how high is the volume of the audio playing). I've created a virtual microphone that monitors a virtual audio device (null sink). When i play audio in that device (and configure the music visualizer to use it), it works with no problem, on all programs (cava, vis and kde). My conclusion is that it must be a problem with pulseaudio, though i don't have the technical knowledge to be sure. This is the output of the pacmd list-sinks: 2 sink(s) available. index: 1 name: <Source> driver: <module-null-sink.c> flags: DECIBEL_VOLUME LATENCY DYNAMIC_LATENCY state: IDLE suspend cause: (none) priority: 1000 volume: front-left: 65536 / 100% / 0,00 dB, front-right: 65536 / 100% / 0,00 dB balance 0,00 base volume: 65536 / 100% / 0,00 dB volume steps: 65537 muted: no current latency: 1252,57 ms max request: 344 KiB max rewind: 344 KiB monitor source: 1 sample spec: s16le 2ch 44100Hz channel map: front-left,front-right Estéreo used by: 0 linked by: 1 configured latency: 2000,00 ms; range is 0,50 .. 2000,00 ms module: 25 properties: device.description = "Saída nula" device.class = "abstract" device.icon_name = "audio-card" * index: 20 name: <alsa_output.pci-0000_07_00.6.analog-stereo> driver: <module-alsa-card.c> flags: HARDWARE HW_MUTE_CTRL HW_VOLUME_CTRL DECIBEL_VOLUME LATENCY DYNAMIC_LATENCY state: RUNNING suspend cause: (none) priority: 9039 volume: front-left: 32768 / 50% / -18,06 dB, front-right: 32768 / 50% / -18,06 dB balance 0,00 base volume: 65536 / 100% / 0,00 dB volume steps: 65537 muted: no current latency: 18,46 ms max request: 3 KiB max rewind: 3 KiB monitor source: 24 sample spec: s16le 2ch 44100Hz channel map: front-left,front-right Estéreo used by: 1 linked by: 1 configured latency: 18,75 ms; range is 0,50 .. 1999,82 ms card: 1 <alsa_card.pci-0000_07_00.6> module: 7 properties: alsa.resolution_bits = "16" device.api = "alsa" device.class = "sound" alsa.class = "generic" alsa.subclass = "generic-mix" alsa.name = "ALC887-VD Analog" alsa.id = "ALC887-VD Analog" alsa.subdevice = "0" alsa.subdevice_name = "subdevice #0" alsa.device = "0" alsa.card = "1" alsa.card_name = "HD-Audio Generic" alsa.long_card_name = "HD-Audio Generic at 0xfe680000 irq 60" alsa.driver_name = "snd_hda_intel" device.bus_path = "pci-0000:07:00.6" sysfs.path = "/devices/pci0000:00/0000:00:08.1/0000:07:00.6/sound/card1" device.bus = "pci" device.vendor.id = "1022" device.vendor.name = "Advanced Micro Devices, Inc. [AMD]" device.product.id = "15e3" device.product.name = "Family 17h (Models 10h-1fh) HD Audio Controller (PRIME B450M-A Motherboard)" device.string = "front:1" device.buffering.buffer_size = "352768" device.buffering.fragment_size = "176384" device.access_mode = "mmap+timer" device.profile.name = "analog-stereo" device.profile.description = "Estéreo analógico" device.description = "Family 17h (Models 10h-1fh) HD Audio Controller (PRIME B450M-A Motherboard) Estéreo analógico" module-udev-detect.discovered = "1" device.icon_name = "audio-card-pci" ports: analog-output-lineout: Line Out (priority 9000, latency offset 0 usec, available: no) properties: analog-output-headphones: Headphones (priority 9900, latency offset 0 usec, available: yes) properties: device.icon_name = "audio-headphones" active port: <analog-output-headphones>
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| Can not stop nohup process Posted: 23 Jul 2021 08:00 AM PDT I am trying to run a very complex statistical model that I expected to take a very long time, so I used nohup to run the process. However, I underestimated the length and it would take like 260+ days to complete so I want to cancel the process. I attempted using ps aux |grep nohup to get the PID, I get the following output: \<username> 4920 0.0 0.0 14224 972 pts/15 S+ 01:53 0:00 grep nohup
When I use kill -9 14224 I am told there is no process. So I used ps -ef | grep beast-2 as I do not remember the entire command I entered. Pulls up the following: 144039 1 0 Jul22 pts/12 00:00:00 /bin/sh /opt/anaconda3/bin/beast-2 -seed 777 -working -overwrite -instances 3 -threads 3 -beagle_SSE /home/<username>/XML/ST736_MTBD1.xml
I use kill -9 144039 and check again but the process is still running underneath a new PID. What can I do?  |
| Handling Optional Arguments in bash Posted: 23 Jul 2021 08:23 AM PDT I have the following function that is supposed to write strings in new lines. There is a warning option, so that when -w is set by the user, some lines get coloured in red. -w allows an optional numeric argument -wNUM. If NUM is not provided, warn is set to 1 so that only the first line is coloured red. I am encountering a problem with calling the command printfm -w -- "First line" "second line").
I have included local warn="1" before the case statement. ("-w"|"--warning") local warn="1" case "$2" in
The function is listed here printfm () { # Process command line options shortopts="hVw::" longopts="help,version,warning::" opts=$(getopt -o "$shortopts" -l "$longopts" -n "${0##*/}" -- "$@") if [ $? -ne 0 ]; then local shorthelp=1 # getopt returned (and reported) an error. return fi local f=0 if [ $? -eq 0 ]; then eval "set -- ${opts}" while [ $# -gt 0 ]; do case "$1" in ("-V"|"--version") printf "%s\n" "V01 Jul 2021 Wk27" declare -i f=0 shift break ;; ("-h"|-\?|"--help") printf "%s\n" "Print strings." declare -i f=0 shift break ;; # ------------------------------------ ("-w"|"--warning") case "$2" in (+([[:digit:]])) local -r warn="$2" shift 2 ;; (*) local -r warn="1" shift 2 ;; esac declare -i local f=1 ;; # ---------------------------------------- (--) declare -i local f=1 shift break ;; esac done fi red=$(tput setaf 9) rgl=$(tput sgr0) # Print normal text or warnings if [[ -v $f ]] && (( f != 0 )); then # print normal multi-line text [[ ! -v $warn ]] && printf '%s\n' "$@" # print multi-line warnings rge='^[0-9]+$' if [[ -v $warn && "$warn" == "1" ]]; then printf '%s\n' ${red}"$1"${rgl} # first line red printf '%s\n' "${@:2}" # remaining, uncoloured elif [[ -v $warn && "$warn" =~ $rge ]]; then printf '%s\n' ${red}"$@"${rgl} # all lines red fi fi return 0 }
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| A few basics with AND or OR I need some help with Posted: 23 Jul 2021 07:26 AM PDT I have a few problems that I seem to be stumped with. It seems to be with the logic of Bash. if [ "$argument" = "Y" -o "$argument" = "YES" ]; then … fi
Is there a way to create this statement without using "$argument" twice? and how could I expand this to add maybe 3 or 4 answers e.g. Yup, OK Secondly, while [ "$argument" != "Y" ] || [ "$argument" != "YES" ] || [ "$argument" != "N" ] || [ "$argument" != "NO" ]; do echo "Not a valid selection" done
I'm not sure what I'm doing wrong here but no matter the entered statement into $argument, I always get Not a valid selection it won't accept Y, YES, N, or NO  |
| Is there an emulator or a compatibility layer to run Linux binary on macOS? Posted: 23 Jul 2021 08:06 AM PDT There exists a compatibility layer called Wine to run Windows binary on Linux. Is there something similar on macOS to run Linux binary?  |
| How to remove spaces at the end of folder names? Posted: 23 Jul 2021 08:23 AM PDT I would like to delete the spaces at the end of my folder names. I have a folder called "Project1 " in which I have another folder called "Exercise1 ". I want to use a script to delete the spaces at the end and only at the end.
I don't know if I have expressed myself correctly. Thank you in advance, have a nice evening. I typed the command /bin/ls -l | od -c root@debian:~$ /bin/ls -l | od -c 0000000 t o t a l 3 2 \n d r w x r - x 0000020 r - x 2 k a b i a k a b i 0000040 a 4 0 9 6 j u i l . 2 0 0000060 1 0 : 2 6 B u r e a u \n d r w 0000100 x r - x r - x 7 k a b i a 0000120 k a b i a 4 0 9 6 j u i l . 0000140 2 2 1 7 : 4 6 D o c u m e 0000160 n t s \n d r w x r - x r - x 2 0000200 k a b i a k a b i a 4 0 9 0000220 6 j u i l . 2 2 1 9 : 2 6 0000240 I m a g e s \n d r w x r - x r 0000260 - x 2 k a b i a k a b i a 0000300 4 0 9 6 j u i l . 2 0 1 0000320 0 : 2 6 M o d 303 250 l e s \n d r 0000340 w x r - x r - x 2 k a b i a 0000360 k a b i a 4 0 9 6 j u i l 0000400 . 2 0 1 0 : 2 6 M u s i q 0000420 u e \n d r w x r - x r - x 2 0000440 k a b i a k a b i a 4 0 9 6 0000460 j u i l . 2 0 1 0 : 2 6 0000500 P u b l i c \n d r w x r - x r - 0000520 x 2 k a b i a k a b i a 0000540 4 0 9 6 j u i l . 2 0 1 0 0000560 : 2 6 T 303 251 l 303 251 c h a r g e 0000600 m e n t s \n d r w x r - x r - x 0000620 2 k a b i a k a b i a 4 0000640 0 9 6 j u i l . 2 0 1 0 : 0000660 2 6 V i d 303 251 o s \n 0000673
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| systemd networking is ignoring network configuration file on boot Posted: 23 Jul 2021 08:40 AM PDT I have an embedded linux system compiled with Yocto, using systemd. I have a network configuration file at /etc/systemd/network/20-wired.network. The contents of that file are: [Match] Name=eth0 [Network] Address=192.168.5.40/24 Gateway=192.168.5.1 DNS=192.168.5.1
However, when I reboot my machine, the eth0 interface is successfully configured using DHCP instead of assigning the static IP address. The ip a command shows: 2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000 link/ether f8:dc:7a:3c:27:82 brd ff:ff:ff:ff:ff:ff inet 10.1.1.223/16 brd 10.1.255.255 scope global dynamic noprefixroute eth0 valid_lft 85898sec preferred_lft 85898sec inet6 fe80::43ec:fd39:e1c0:3c05/64 scope link noprefixroute valid_lft forever preferred_lft forever
However, if I then wait 5 seconds or so after boot, and do a systemctl restart systemd-networkd the system will usually be configured correctly like so: 2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000 link/ether f8:dc:7a:3c:27:82 brd ff:ff:ff:ff:ff:ff inet 192.168.5.40/24 brd 192.168.5.255 scope global eth0 valid_lft forever preferred_lft forever inet6 fe80::43ec:fd39:e1c0:3c05/64 scope link noprefixroute valid_lft forever preferred_lft forever
Lastly, with the right timing on the restart of the network service, I can seemingly even get this result (both the intended static address and the unwanted DHCP address): 2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000 link/ether f8:dc:7a:3c:27:82 brd ff:ff:ff:ff:ff:ff inet 192.168.5.40/24 brd 192.168.5.255 scope global eth0 valid_lft forever preferred_lft forever inet 10.1.1.223/16 brd 10.1.255.255 scope global dynamic noprefixroute eth0 valid_lft 86246sec preferred_lft 86246sec inet6 fe80::43ec:fd39:e1c0:3c05/64 scope link noprefixroute valid_lft forever preferred_lft forever
Does anyone know what is going on here or how to debug this? Is there something obvious wrong with my configuration? systemctl status systemd-networkd shows the following immediately after boot (specifically after network-online.target):
* systemd-networkd.service - Network Service Loaded: loaded (/lib/systemd/system/systemd-networkd.service; enabled; vendor preset: enabled) Active: activating (start) since Tue 2021-07-20 12:58:52 UTC; 65ms ago TriggeredBy: * systemd-networkd.socket Docs: man:systemd-networkd.service(8) Main PID: 282 ((networkd)) Tasks: 1 (limit: 3576) Memory: 416.0K CGroup: /system.slice/systemd-networkd.service `-282 (networkd)
Some number of seconds later it looks like this: * systemd-networkd.service - Network Service Loaded: loaded (/lib/systemd/system/systemd-networkd.service; enabled; vendor preset: enabled) Active: active (running) since Tue 2021-07-20 12:58:52 UTC; 3min 20s ago TriggeredBy: * systemd-networkd.socket Docs: man:systemd-networkd.service(8) Main PID: 282 (systemd-network) Status: "Processing requests..." Tasks: 1 (limit: 3576) Memory: 2.0M CGroup: /system.slice/systemd-networkd.service `-282 /lib/systemd/systemd-networkd
So it looks like the service is still "activating" when the network-online.target services run. I'm not sure what that means, though, or if it's a problem.  |
| Can I enable auto-sleep at the tty login prompt? Posted: 23 Jul 2021 08:28 AM PDT I recently turned on my computer and accidentally left it sitting at the login prompt for hours, needlessly sucking power. A display manager would automatically suspend in that case, but I don't want one. So can I configure the computer to go to sleep (I guess using systemctl suspend) after idling a few minutes at the login prompt (and ideally also in a logged in tty)?  |
| How does `awk 'NF {p=1} p'` remove blank lines from the beginning and end of a file? Posted: 23 Jul 2021 08:47 AM PDT Searching for a way to remove blank lines from the beginning and the end (using tac) of a file, I've stumbled across this one: awk 'NF {p=1} p'
How / why does this work? I understand NF is only true if there are any fields (if the line is not a blank line).  |
| how to install a webmin module by command line (bash)? Posted: 23 Jul 2021 08:07 AM PDT I want to install a module in webmin by command line (bash). How do you do this? Example: wget https://download.webmin.com/download/modules/text-editor.wbm.gz
inside this .gz: text-editor.wbm sudo tar -xf text-editor.wbm.gz
The module (in this case text-editor) when installed via GUI: 
It sends the files to several places. Example: To /usr/share/webmin/text-editor 
To : /etc/webmin/text-editor 
To: /var/webmin/modules/text-editor (empty): 
Important: Webmin installation methods used in my test: Method 1: sudo sh -c 'echo "deb http://download.webmin.com/download/repository sarge contrib" >> /etc/apt/sources.list' wget -q http://www.webmin.com/jcameron-key.asc -O- | sudo apt-key add - sudo apt -y install webmin
Method 2: wget https://prdownloads.sourceforge.net/webadmin/webmin_1.910_all.deb sudo dpkg --install webmin_1.910_all.deb
I asked the author (Jamie Cameron) no response to the date, because he is the author of webmin and the author of the module that I try to install Text Editor 1.4 Description Provides a simple interface for editing text files, with a history of recently-edited files. Download text-editor.wbm.gz Author Jamie Cameron Last updated 2007-04-18 11:27:19
Update: I have managed to make a script that installs the text-editor module. It is not very "elegant", but it works: sudo chmod +x text-editor.sh && sudo ./text-editor.sh
#!/bin/bash fshare=/usr/share/webmin/text-editor fetc=/etc/webmin/text-editor fvar=/var/webmin/modules/text-editor if [ ! -d $fshare ]; then mkdir -p $fshare; fi if [ ! -d $fetc ]; then mkdir -p $fetc; fi if [ ! -d $fvar ]; then mkdir -p $fvar; fi touch $fetc/files wget -c https://download.webmin.com/download/modules/text-editor.wbm.gz tar -xf text-editor.wbm.gz cp -f -R text-editor/* $fshare cp text-editor/config $fetc sed -i '$ s/$/ text-editor/' /etc/webmin/webmin.acl sh -c 'echo "text-editor=1" >> /etc/webmin/installed.cache' /etc/init.d/webmin restart
However, there should be a better method to install any webmin module by command line Update: Jamie Cameron replied. 
So, In my case it would be: sudo /usr/share/webmin/install-module.pl text-editor.wbm
I hope this answer serves all interested parties The theme is closed. You can vote for the closing of the question  |
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