| How to set the default username and password for LxQt Desktop in Debian Posted: 30 May 2021 09:53 AM PDT I am having a Debian system which is having: pstree sddm--->Xorg | | -->LxQt
where sddm is service running as a combination of Xorg(server) and LxQt(Desktop application). I want to log in using the default username and password from Lxqt Desktop. May I please know where I can set this default username and password?  |
| how do I resume an scp download? Posted: 30 May 2021 10:08 AM PDT I started downloading about 1gb from a colleague, and received 750mb in about 8 hours. The command I used was $ scp dev@dev_server:/home/dev/trainingVM/Centos7VMa_app_zxTmw457.ova
What command could I use next, so that the remainder would download in under 3 hours, not 10?  |
| VNC Fedora 34 - headphone jack and usb camera not working Posted: 30 May 2021 09:45 AM PDT Always had vnc on Fedora boxes so I have one keyboard / mouse from my main Windoz workstation with lots of monitors. Everything is local gig LAN. On the physical Fedora box I have a usb logitech camera and cheap speakers connected to the 3.5mm headphone jack. Camera / speakers worked great with zoom, skype, and I could have videos playing on the Fedora box and still do work stuff on the Windoz machine. Did a fresh install of Fedora 34 and now when I VNC to the Fedora box, the sound output device is blank. If I am on the physical Fedora machine sound is normal. Researched a lot and pipewire had loads of issues so I switched back to pulseaudio. Now sound settings shows Dummy Output and still no sound. Again, on the physical Fedora machine - sound is great. I only have onboard sound and has worked for the past several years through countless Fedora versions until 34. Any idea how to get the headphone jack and camera on the physical Fedora 34 box to work when I am connected via VNC to it. Also tried xRPD and got the same results.  |
| Ubuntu 16.04 dropping IPv4-mapped IPv6 addresses Posted: 30 May 2021 09:22 AM PDT I have a Debian 11(kernel version 5.10.0-6) and Ubuntu 16.04(kernel version 4.4.0-201) in the same broadcast domain. Both systems have an iputils traceroute6 version s20121221 installed and firewall allows all the IPv6 traffic. Now the problem is, that Ubuntu installation does not pass the IPv4-mapped IPv6 addresses to traceroute6 utility. I can see that the packets reach the system, but traceroute6 does not see those. When I execute the strace -f ./traceroute6 -d -q1 -n fc00::10:2:34:30 command in the Debian 11 system, then the output related to fourth hop(::ffff:172.16.0.2) can be seen below: setsockopt(4, SOL_IPV6, IPV6_UNICAST_HOPS, [4], 4) = 0 sendto(4, "\0\0'\335\0\0\0\4Y\266\263`\0\0\0\0K\267\6\0\0\0\0\0", 24, 0, {sa_family=AF_INET6, sin6_port=htons(33434), sin6_flowinfo=htonl(0), inet_pton(AF_INET6, "fc00::10:2:34:30", &sin6_addr), sin6_scope_id=0}, 28) = 24 select(4, [3], NULL, NULL, {tv_sec=5, tv_usec=0}) = 1 (in [3], left {tv_sec=4, tv_usec=988513}) recvmsg(3, {msg_name={sa_family=AF_INET6, sin6_port=htons(0), sin6_flowinfo=htonl(0), inet_pton(AF_INET6, "::ffff:172.16.0.2", &sin6_addr), sin6_scope_id=0}, msg_namelen=28, msg_iov=[{iov_base="\3\0R4\t\0\0\0`\v\207\265\0 \21\2\374\0\0\0\0\0\0\0\0\20\0\1\0\22\0\21"..., iov_len=512}], ms g_iovlen=1, msg_control=[{cmsg_len=36, cmsg_level=SOL_IPV6, cmsg_type=0x32}, {cmsg_len=36, cmsg_level=SOL_IPV6, cmsg_type=0x2}], msg_controllen=80, msg_flags=0}, 0) = 152 write(1, " 4 ::ffff:172.16.0.2 12.777 ms", 32 4 ::ffff:172.16.0.2 12.777 ms) = 32 write(1, "\n", 1 ) = 1
As seen above, after sending the packet to fc00::10:2:34:30 in the sendto(), the recvmsg() receives the packet from ::ffff:172.16.0.2. However, in case of Ubuntu 16.04 system, the recvmsg() never receives the packet: setsockopt(4, SOL_IPV6, IPV6_UNICAST_HOPS, [4], 4) = 0 sendto(4, "\0\0Q\222\0\0\0\4\346\267\263`\0\0\0\0\365\241\1\0\0\0\0\0", 24, 0, {sa_family=AF_INET6, sin6_port=htons(33434), inet_pton(AF_INET6, "fc00::10:2:34:30", &sin6_addr), sin6_flowinfo=0, sin6_scope_id=0}, 28) = 24 select(4, [3], NULL, NULL, {5, 0}) = 0 (Timeout) write(1, " 4 *", 5 4 *) = 5 write(1, "\n", 1 ) = 1
As seen above, the fourth hop is a * in the Ubuntu 16.04 system. Socket definition in iputils traceroute6 is following: socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP)
The problem is specifically with IPv4-mapped IPv6 addresses. Other types of IPv6 packets are processed fine in the Ubuntu system. What might cause such behavior?  |
| Unable to get Xorg configuration on Slackware Posted: 30 May 2021 09:37 AM PDT I'm setting up a Slackware docker image and I'm having issues to get Xorg going: # Xorg -configure _XSERVTransSocketUNIXCreateListener: ...SocketCreateListener() failed _XSERVTransMakeAllCOTSServerListeners: server already running (EE) Fatal server error: (EE) Cannot establish any listening sockets - Make sure an X server isn't already running(EE) (EE) Please consult the The X.Org Foundation support at http://wiki.x.org for help. (EE) Please also check the log file at "/var/log/Xorg.0.log" for additional information. (EE) (EE) Server terminated with error (1). Closing log file.
Where the log file doesn't reveal any additional details and my process list looks like: # ps ax PID TTY STAT TIME COMMAND 1 pts/0 Ss 0:00 /bin/bash
4534 pts/0 R+ 0:00 ps ax i.e. I sure do not have an Xserver running already. Some hardware details: # lspci 00:00.0 Host bridge: Intel Corporation Device 5914 (rev 08) 00:02.0 VGA compatible controller: Intel Corporation Device 5917 (rev 07) 00:04.0 Signal processing controller: Intel Corporation Device 1903 (rev 08) 00:14.0 USB controller: Intel Corporation Device 9d2f (rev 21) 00:14.2 Signal processing controller: Intel Corporation Device 9d31 (rev 21) 00:15.0 Signal processing controller: Intel Corporation Device 9d60 (rev 21) 00:15.1 Signal processing controller: Intel Corporation Device 9d61 (rev 21) 00:15.2 Signal processing controller: Intel Corporation Device 9d62 (rev 21) 00:16.0 Communication controller: Intel Corporation Device 9d3a (rev 21) 00:17.0 SATA controller: Intel Corporation Device 9d03 (rev 21) 00:1c.0 PCI bridge: Intel Corporation Device 9d10 (rev f1) 00:1c.5 PCI bridge: Intel Corporation Device 9d15 (rev f1) 00:1f.0 ISA bridge: Intel Corporation Device 9d4e (rev 21) 00:1f.2 Memory controller: Intel Corporation Device 9d21 (rev 21) 00:1f.3 Audio device: Intel Corporation Device 9d71 (rev 21) 00:1f.4 SMBus: Intel Corporation Device 9d23 (rev 21) 02:00.0 Network controller: Intel Corporation Device 24fd (rev 78)
and I've installed the following packages: mesaxf86-video-intelintel-gpu-tools I'm wondering what my problem might be that I can't even get Xorg to create an xorg.conf  |
| Plank dock in improper position Posted: 30 May 2021 07:29 AM PDT I am upgrading my machine using sudo apt-get upgrade
after restarting, I got an improper position of plank dock which is shown below 
I've tried to customize it from plank preferences. but, I can't find any possibilities. I also have tried to search it. Yet, I don't find an article which fit this problem. Anyone know how to fix issue?  |
| awk to return percentage by day of the week Posted: 30 May 2021 08:31 AM PDT So I have a dataset of flights in a CSV file and I want to get a percentage of flights delayed (column 6) ordered by day. 0 is for not delayed and 1 is for delayed 15 or more minutes. Input: DAY_OF_MONTH,"DAY_OF_WEEK","ORIGIN","DEST","DEP_TIME","DEP_DEL15","CANCELLED","DIVERTED","DISTANCE" 1,Tuesday,ORD,GRB,1003,0.00,0.00,0.00,322.248 1,Tuesday,TUL,ORD,1027,0.00,0.00,0.00,1083.42 1,Tuesday,EWR,TYS,1848,0.00,0.00,0.00,1168.61
Output: Weekday, % delayed, delayed, total flights Tuesday,0.00,0,3
The dataset actually has a lot of rows and has every day of a month and all its flights, so that wouldn't be the actual output. Someone helped me come up with: #!/bin/awk BEGIN { FS = OFS = "," } FNR > 1 { total[$2]++; if ($6) delay[$2]++ } END { print "\"weekday\"", "\"percentage_delayed\"", "\"delayed\"", "\"total_flights\"" for ( day in total ) { print day, delay[day] / total[day] * 100, delay[day], total[day]} }
But when I save this to an awk file and try to execute it with:   |
| why tell me illegal pid when kill process Posted: 30 May 2021 07:27 AM PDT Now I am using this script to restart my process: PID=`ps -ef|grep -w ${APP_NAME}|grep -v grep|cut -c 9-15` if [[ ${PID} -gt 1 ]]; then kill -9 ${PID} else echo "Process not found" fi
but when I run this script in remote server from GitHub Actions,shows this error: ======CMD====== cd /opt/apps/dolphin-acientbay/libs . /opt/apps/dolphin-acientbay/libs/upgrade.sh ======END====== err: +/opt/apps/dolphin-acientbay/libs/upgrade.sh:13> JAVA_HOME=/***/.sdkman/candidates/java/11.0.11.hs-adpt err: +/opt/apps/dolphin-acientbay/libs/upgrade.sh:14> APP_HOME=/opt/apps/dolphin-acientbay/libs err: +/opt/apps/dolphin-acientbay/libs/upgrade.sh:15> APP_NAME=dolphin-acientbay-service-1.0.0-SNAPSHOT.jar err: +/opt/apps/dolphin-acientbay/libs/upgrade.sh:17> PID=+/opt/apps/dolphin-acientbay/libs/upgrade.sh:17> ps -ef err: +/opt/apps/dolphin-acientbay/libs/upgrade.sh:17> PID=+/opt/apps/dolphin-acientbay/libs/upgrade.sh:17> grep -w dolphin-acientbay-service-1.0.0-SNAPSHOT.jar err: +/opt/apps/dolphin-acientbay/libs/upgrade.sh:17> PID=+/opt/apps/dolphin-acientbay/libs/upgrade.sh:17> grep -v grep err: +/opt/apps/dolphin-acientbay/libs/upgrade.sh:17> PID=+/opt/apps/dolphin-acientbay/libs/upgrade.sh:17> cut -c 9-15 err: +/opt/apps/dolphin-acientbay/libs/upgrade.sh:17> PID=' 19882 ' 2021/05/30 11:46:21 Process exited with status 1 err: +/opt/apps/dolphin-acientbay/libs/upgrade.sh:18> [[ ' 19882 ' -gt 1 ]] err: +/opt/apps/dolphin-acientbay/libs/upgrade.sh:19> kill -9 ' 19882 ' err: /opt/apps/dolphin-acientbay/libs/upgrade.sh:kill:19: illegal pid: 19882
this is the full script of upgrade.sh: #!/usr/bin/env bash set -u set -e set -x JAVA_HOME="/root/.sdkman/candidates/java/11.0.11.hs-adpt" APP_HOME="/opt/apps/dolphin-acientbay/libs" APP_NAME="dolphin-acientbay-service-1.0.0-SNAPSHOT.jar" PID=`ps -ef|grep -w ${APP_NAME}|grep -v grep|cut -c 9-15` if [[ ${PID} -gt 1 ]]; then kill -9 ${PID} else echo "Process not found" fi sleep 5 count=`ps -ef | grep ${APP_NAME} | grep -v "grep" | wc -l` if [[ ${count} -lt 1 ]]; then nohup ${JAVA_HOME}/bin/java -Xmx128M -Xms128M -jar \ -Xdebug -Xrunjdwp:transport=dt_socket,suspend=n,server=y,address=0.0.0.0:5021 \ -XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath=/opt/apps/dolphin-acientbay/ \ ${APP_HOME}/${APP_NAME} >> ./acientbay.log & sleep 5 else echo "process aready exists!" exit 1 fi
I have tried to tweak the kill process command like this(the xargs trim the white space of pid) to remove the spaces of pid: echo "${PID}" | xargs | kill -9
it tell me : err: /opt/apps/dolphin-acientbay/libs/upgrade.sh:kill:19: not enough arguments
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| String Replacement in Bash-Script "Bad substitution" Posted: 30 May 2021 08:42 AM PDT I try a basic string replacement in a bash script: #!/bin/bash x="I love Linux" echo "${x/Linux/Unix}"
It works fine on my mac, but does not work on my server. I tried different examples from various sites, but I always get the error: Bad substitution My bash version: GNU bash, Version 4.4.12(1)-release (x86_64-pc-linux-gnu) What am I doing wrong?  |
| Synapse/matrix server container config permission/file denied Posted: 30 May 2021 08:38 AM PDT Answer posted by me below, can't accept my own answer yet I am working on a chat client, for development I use a docker setup that uses a 'generate' command to create a config file that you can adjust and use to launch the actual service. On my desktop it works fine however when trying to run it on a respberry or a seperate hd on my laptop it throws a file handler error in the build process stating that permission has been denied. I might be a total noob here but I did change folder mount point permission on my laptop and the raspberry has permissions set on the folder. Docker also is set up to run w/o typing sudo for every command. Here are the permission codes for working vs non working config file # Auto generated, working local -rwxrwxrwx 1 root root 103443 <date> <filename>
# Auto generated not working pi and laptop -rw-r--r-- 1 991 991 106030 <date> <filename>
Am I just not correctly setting up my hard drives ? I get this error on my pi if it's on the default OS partition or not. I am able to start up and serve django with reverse proxy no issue. The chat service I am building on is matrix/synapse. Here is the docker folder on the synapse server repo with the basic setup. The file giving issues is homeserver.yml that is generated from: docker-compose run --rm synapse generate
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| Bash : find all IP addresses that have been used for a non-autorised access attempt Posted: 30 May 2021 06:46 AM PDT I am working on my virtual machine on bash. I am asked to find all ip addresses that have been used for an attempt to access the machine without authorization, using the auth.log file. I do not seem to find any answer to my problem. Here is an example :  all returned lines must be written in my shared file /mnt/analyse/traitement/cueillette.txt. Please help ! Thanks  |
| How to reset left time of user systemd timer Posted: 30 May 2021 09:34 AM PDT How can I reset the left time of a user systemd timer? I have a user systemd service: [Unit] Description=Remind to a take break [Service] ExecStart=/opt/scripts/break_reminder Environment=PATH=/sbin:/bin:/usr/bin:/usr/sbin:/opt/scripts [Install] WantedBy=default.target
and a user systemd timer [Unit] Description=Remind to a take break [Timer] OnStartupSec=0min OnUnitActiveSec=30min [Install] WantedBy=timers.target
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| mdadm not enough devices to start the array - recovery possible? Posted: 30 May 2021 10:17 AM PDT MD raid5 array appears to have stopped working suddenly. Symptoms are somewhat similar to this issue in that I'm getting errors talking about not enough devices to start the array, however in my case the event counts on all three drives are equal. It's a raid 5 array that should have 2 active drives and one parity, however mdadm --examine on each drive shows two of them having their role listed as spare and only one as an active drive. I've tried mdadm --stop /dev/md1 followed by mdadm --assemble /dev/md1 (including attempts with the --force and --run flags). SMART data doesn't indicate any issues with the drives (and current pending and reallocated sector counts are all zero), I've tried the raid.wiki.kernel.org guide linked below by frostschutz through the steps involving setting up mapped overlay devices. I would have then assumed running the following command would create a raid array that I could then attempt to mount read-only and see if that resulted in a readable filesystem or just a garbled mess (i.e. to determine if my guess of sdf1 being the parity drive was correct or if I should try again with sde1) - but instead it gives the error show below (have also tried with the associated loop devices as per losetup --list, with the same result). mdadm --create /dev/md2 --assume-clean --level=5 --chunk=64K --metadata=1.2 --data-offset=261888s --raid-devices=3 missing /dev/mapper/sdh1 /dev/mapper/sdf1 mdadm: super1.x cannot open /dev/mapper/sdh1: Device or resource busy mdadm: /dev/mapper/sdh1 is not suitable for this array. mdadm: super1.x cannot open /dev/mapper/sdf1: Device or resource busy mdadm: /dev/mapper/sdf1 is not suitable for this array. mdadm: create aborted
Also, while mdadm --detail /dev/md1 previously gave the output below, it now gives: /dev/md1: Version : 1.2 Raid Level : raid0 Total Devices : 3 Persistence : Superblock is persistent State : inactive Working Devices : 3 Name : bob:1 (local to host bob) UUID : 07ff9ba9:e8100e68:94c12c1a:3d7ad811 Events : 373364 Number Major Minor RaidDevice - 253 11 - /dev/dm-11 - 253 10 - /dev/dm-10 - 253 9 - /dev/dm-9
Also, I've noticed dmsetup status gives the same information for all three overlays, and has a number that looks suspiciously like it may refer to the size of original raid array (16TB) rather than an individual drive (8TB) - not sure if this is as it should be? sde1: 0 15627528888 snapshot 16/16777216000 16 sdh1: 0 15627528888 snapshot 16/16777216000 16 sdf1: 0 15627528888 snapshot 16/16777216000 16
Not sure how to progress from this point as far as attempting to create the device, mount and inspect the filesystem to confirm whether I guessed the correct parity device or not, using the overlay to prevent anything being written to the actual drives. UPDATE: As per frostschutz's suggestion below, the array was somehow in some kind of state where --stop needed to be issued prior to being able to do anything with the underlying drives. I'd discounted that possibility previously as cat /proc/mdstat was showing the array as inactive, which I'd assumed meant it could not possibly be what was tying the drives up, but that was not in fact the case (I'd also previously ran --stop, but it would seem something was done afterwards triggering it's return to a non-stopped state). After getting the drive order correct (not on the first try, glad I was using overlays) the array passed a fsck check with no errors reported and is now up and running as if nothing ever happened.
The result of running other diagnostic commands: cat /proc/mdstat: Personalities : [raid1] [linear] [multipath] [raid0] [raid6] [raid5] [raid4] [raid10] md1 : inactive sdh1[1](S) sde1[3](S) sdf1[0](S) 23440900500 blocks super 1.2
mdadm --detail /dev/md1: /dev/md1: Version : 1.2 Raid Level : raid0 Total Devices : 3 Persistence : Superblock is persistent State : inactive Working Devices : 3 Name : bob:1 (local to host bob) UUID : 07ff9ba9:e8100e68:94c12c1a:3d7ad811 Events : 373364 Number Major Minor RaidDevice - 8 113 - /dev/sdh1 - 8 81 - /dev/sdf1 - 8 65 - /dev/sde1
lines appearing in dmesg when trying to mdadm --assemble /dev/md1: md/raid:md1: device sdh1 operational as raid disk 1 md/raid:md1: not enough operational devices (2/3 failed) md/raid:md1: failed to run raid set. md: pers->run() failed ..
and the mdadm --examines /dev/sde1: Magic : a92b4efc Version : 1.2 Feature Map : 0x1 Array UUID : 07ff9ba9:e8100e68:94c12c1a:3d7ad811 Name : bob:1 (local to host bob) Creation Time : Mon Mar 4 22:10:29 2019 Raid Level : raid5 Raid Devices : 3 Avail Dev Size : 15627267000 (7451.66 GiB 8001.16 GB) Array Size : 15627266688 (14903.32 GiB 16002.32 GB) Used Dev Size : 15627266688 (7451.66 GiB 8001.16 GB) Data Offset : 261888 sectors Super Offset : 8 sectors Unused Space : before=261808 sectors, after=312 sectors State : clean Device UUID : e856f539:6a1b5822:b3b8bfb7:4d0f4741 Internal Bitmap : 8 sectors from superblock Update Time : Sun May 30 00:22:45 2021 Bad Block Log : 512 entries available at offset 40 sectors Checksum : 9b5703bc - correct Events : 373364 Layout : left-symmetric Chunk Size : 64K Device Role : spare Array State : .AA ('A' == active, '.' == missing, 'R' == replacing) /dev/sdf1: Magic : a92b4efc Version : 1.2 Feature Map : 0x1 Array UUID : 07ff9ba9:e8100e68:94c12c1a:3d7ad811 Name : bob:1 (local to host bob) Creation Time : Mon Mar 4 22:10:29 2019 Raid Level : raid5 Raid Devices : 3 Avail Dev Size : 15627267000 (7451.66 GiB 8001.16 GB) Array Size : 15627266688 (14903.32 GiB 16002.32 GB) Used Dev Size : 15627266688 (7451.66 GiB 8001.16 GB) Data Offset : 261888 sectors Super Offset : 8 sectors Unused Space : before=261800 sectors, after=312 sectors State : clean Device UUID : 7919e56f:2e08430e:95a4c4a6:1e64606a Internal Bitmap : 8 sectors from superblock Update Time : Sun May 30 00:22:45 2021 Bad Block Log : 512 entries available at offset 72 sectors Checksum : d54ff3e1 - correct Events : 373364 Layout : left-symmetric Chunk Size : 64K Device Role : spare Array State : .AA ('A' == active, '.' == missing, 'R' == replacing) /dev/sdh1: Magic : a92b4efc Version : 1.2 Feature Map : 0x1 Array UUID : 07ff9ba9:e8100e68:94c12c1a:3d7ad811 Name : bob:1 (local to host bob) Creation Time : Mon Mar 4 22:10:29 2019 Raid Level : raid5 Raid Devices : 3 Avail Dev Size : 15627267000 (7451.66 GiB 8001.16 GB) Array Size : 15627266688 (14903.32 GiB 16002.32 GB) Used Dev Size : 15627266688 (7451.66 GiB 8001.16 GB) Data Offset : 261888 sectors Super Offset : 8 sectors Unused Space : before=261800 sectors, after=312 sectors State : clean Device UUID : 0c9a8237:7e79a439:d4e35b31:659f3c86 Internal Bitmap : 8 sectors from superblock Update Time : Sun May 30 00:22:45 2021 Bad Block Log : 512 entries available at offset 72 sectors Checksum : 6ec2604b - correct Events : 373364 Layout : left-symmetric Chunk Size : 64K Device Role : Active device 1 Array State : .AA ('A' == active, '.' == missing, 'R' == replacing)
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| Adding Windows Boot Manager to GRUB2 Posted: 30 May 2021 06:52 AM PDT I have an SSD and I am using windows 10. I recently installed Arch and I configured my SSD in a way that it has 2 EFI System partion. One for GRUB2 and another for windows boot manager.My system boots as UEFI.Eventhough I installed os prober it didn't detect windows bootloader. So I need to switch to UEFI and change boot orders everytime I need to switch. How should I configure grub2 file so it also detects windows bootloader and gives me a option to choose from either, when grub2 is loaded.  |
| How to launch a command at the startup of only the very first shell of an X session? Posted: 30 May 2021 06:49 AM PDT I am running Gnome on Pop-OS! 20.04. I am using terminator and zsh shell. I want to launch fortune only the first time I use zsh shell in a X session. I have tried those kind of things in .zshrc: ### count the lines of ps -ax | grep zsh ps -ax | grep /zsh ### [ -z "$(pidof zsh)" ] && fortune
PS: I had hard times finding appropriate tags for this quesion  |
| How to get the average of multiple data in a row from multiple folders Posted: 30 May 2021 09:40 AM PDT My data inside a folder data looks like data1.txt, data2.txt, … data120.txt. Inside each .txt file I have four columns (1000 data lines in each column) example: data1.txt 1 2 3 4 4 0 1 3 3 1 1 2 2 2 2 1 ........
data2.txt 0 1 3 4 4 2 1 3 3 1 3 2 2 3 2 1 ........
data3.txt 1 0 3 4 4 0 0 3 0 1 1 2 2 0 2 1 ........
data120.txt 1 2 3 1 4 1 1 3 3 1 1 1 2 1 2 1 ........
I want to get the average .txt which looks like below but divided by 4 because I used four data samples in this example. 1+0+1+1 \ 2+1+0+2 \ 3+3+3+3 \ 4+4+4+1 \ 4+4+4+4 \ 0+2+0+1 \ 1+1+0+1 \ 3+3+3+3 \ 3+3+0+3 \ 1+1+1+1 \ 1+3+1+1 \ 2+2+2+1 \ 2+2+2+2 \ 2+3+0+1 \ 2+2+2+2 \ 1+1+1+1 \
I show my data this way just to make it clear - )  |
| How I can grep data with some spaces and ignoring block? Posted: 30 May 2021 10:01 AM PDT I am trying to retrieve Local Address-port with port number in different block used by each IP-address in Foreign Address and PID/Program name) from the following and store it in a file: I used: netstat -natp | grep '^[a-z0-9P]*'
after that I want to ignore Recv-Q and Send-Q block and take Local Address with its port number and Foreign Address and then again ignore State and take PID/Program name. Which regexp will be help full for me? Also, it will be more helpful if I am able keep both port numbers in different block after each address. This is What I have: $ netstat -natp | grep '^[a-z0-9P]*' (Not all processes could be identified, non-owned process info will not be shown, you would have to be root to see it all.) Active Internet connections (servers and established) Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name tcp 0 0 0.0.0.0:80 0.0.0.0:* LISTEN - tcp 0 0 127.0.0.1:5939 0.0.0.0:* LISTEN - tcp 0 0 127.0.0.53:53 0.0.0.0:* LISTEN - tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN - tcp 0 0 127.0.0.1:631 0.0.0.0:* LISTEN - tcp 0 0 0.0.0.0:5432 0.0.0.0:* LISTEN - tcp 0 0 0.0.0.0:7071 0.0.0.0:* LISTEN - tcp 0 0 192.168.42.157:37960 106.10.218.42:443 ESTABLISHED 21019/firefox tcp 0 0 192.168.42.157:35636 117.18.237.29:80 ESTABLISHED 21019/firefox tcp 1 32 192.168.42.157:40444 5.39.93.71:443 CLOSING - tcp 0 0 192.168.42.157:35626 52.27.200.224:443 TIME_WAIT - tcp 0 0 192.168.42.157:43004 122.252.255.200:80 ESTABLISHED 21019/firefox tcp 0 0 192.168.42.157:35734 117.18.237.29:80 TIME_WAIT - tcp 0 0 192.168.42.157:35776 52.27.200.224:443 TIME_WAIT - tcp 0 0 192.168.42.157:41690 54.182.1.219:443 ESTABLISHED 21019/firefox tcp 0 0 192.168.42.157:56472 54.182.0.97:443 ESTABLISHED 21019/firefox tcp 1 32 192.168.42.157:48390 198.252.206.25:443 CLOSING - tcp 0 0 192.168.42.157:37322 34.107.221.82:80 ESTABLISHED 21019/firefox tcp 0 0 192.168.42.157:57724 204.79.197.204:443 ESTABLISHED 21019/firefox tcp 0 0 192.168.42.157:43142 23.57.14.17:443 ESTABLISHED 21019/firefox tcp 0 0 192.168.42.157:46286 13.227.138.58:443 ESTABLISHED 21019/firefox tcp 0 0 192.168.42.157:55576 112.133.250.163:443 ESTABLISHED 21019/firefox tcp 0 0 192.168.42.157:52328 151.101.120.193:443 ESTABLISHED 21019/firefox tcp 0 0 192.168.42.157:35736 52.39.214.89:443 ESTABLISHED 21019/firefox tcp 0 0 192.168.42.157:57252 99.83.135.170:443 ESTABLISHED 21019/firefox tcp 0 0 192.168.42.157:48394 198.252.206.25:443 ESTABLISHED 21019/firefox tcp 0 0 192.168.42.157:45020 54.182.0.113:443 ESTABLISHED 21019/firefox tcp 0 0 192.168.42.157:50396 27.123.42.205:443 ESTABLISHED 21019/firefox tcp 1 32 192.168.42.157:48092 198.252.206.25:443 CLOSING - tcp 0 0 192.168.42.157:55798 142.250.192.99:80 TIME_WAIT - tcp 0 0 192.168.42.157:34190 157.240.16.52:443 ESTABLISHED 21019/firefox tcp 0 0 192.168.42.157:37320 34.107.221.82:80 ESTABLISHED 21019/firefox tcp 0 0 192.168.42.157:44806 54.87.110.85:443 ESTABLISHED 21019/firefox tcp 0 0 192.168.42.157:51202 103.229.10.173:443 ESTABLISHED 21019/firefox
This is what I want: Prot Local Address PortofLocalA Foreign Address PortofForeignA PID/Program name
and all its o/p below it  |
| Transmission rewrites colons in directory names to underscores Posted: 30 May 2021 10:21 AM PDT Transmission appears to replace colons : in (the parent) directory name with the underscore _ character for added torrents. How to disable this behavior? for instance: Wikipedia: en-2020-01 → Wikipedia_ en-2020-01
version 3.00 (bb6b5a062e)  |
| Store terminal output in HTML file Posted: 30 May 2021 09:16 AM PDT I have a CSV file that I'm counting the occurrences of column 4: Input: 2,Serveis,14,"Restaurants, bars i hotels (Inclos hostals, pensions i fondes)",Restaurants,1 2,Serveis,11,"Finances i assegurances",Finances i assegurances,1 2,Serveis,14,"Restaurants, bars i hotels (Inclos hostals, pensions i fondes)",serveis d'allotjament,1 2,Serveis,14,"Restaurants, bars i hotels (Inclos hostals, pensions i fondes)",Bars / CIBERCAFE,1 1,Comerç al detall,4,Equipament personal,Calçat i pell,1 2,Serveis,14,"Restaurants, bars i hotels (Inclos hostals, pensions i fondes)",Bars / CIBERCAFE,1 2,Serveis,14,"Restaurants, bars i hotels (Inclos hostals, pensions i fondes)",Bars / CIBERCAFE,1 1,Comerç al detall,3,Parament de la llar,Mobles i articles fusta i metall,1 2,Serveis,14,"Restaurants, bars i hotels (Inclos hostals, pensions i fondes)",Restaurants,1
After using this code: cat file.csv | cut -d, -f 4 | sort | uniq -c | sort -nr
I get the following output: 6 "Restaurants 1 Parament de la llar 1 Finances i assegurances 1 Equipament personal
And I want to write a script that runs the code and puts this output in an HTML file, in sort of a simple table or like text plain and simple. How would I do that?  |
| speedtest-cli: ValueError: invalid literal for int() with base 10: '' Posted: 30 May 2021 10:10 AM PDT On 3 machines I get: $ speedtest-cli Retrieving speedtest.net configuration... Traceback (most recent call last): File "/usr/bin/speedtest-cli", line 11, in <module> load_entry_point('speedtest-cli==2.1.2', 'console_scripts', 'speedtest-cli')() File "/usr/lib/python3/dist-packages/speedtest.py", line 1986, in main shell() File "/usr/lib/python3/dist-packages/speedtest.py", line 1872, in shell speedtest = Speedtest( File "/usr/lib/python3/dist-packages/speedtest.py", line 1091, in __init__ self.get_config() File "/usr/lib/python3/dist-packages/speedtest.py", line 1173, in get_config ignore_servers = list( ValueError: invalid literal for int() with base 10: ''
I have tested one of these machines on two different internet connections with the same result. Why is it not working?  |
| Make specific key sticky Posted: 30 May 2021 09:17 AM PDT I have found enabling sticky keys under xorg (awesome desktop manager) on Super User, which showed me that I can enable sticky keys via xkbset sticky -twokey
This works as expected, but in my case I'd prefer to only make a specific key (Alt Gr) be sticky instead of all modifier keys. Can this be configured? And if so: where?  |
| Why does POSIX require certain shell built-ins to have an external implementation? Posted: 30 May 2021 10:00 AM PDT From this question about whether printf is a built-in for yash, comes this answer that quotes the POSIX standard. The answer points out that the POSIX search sequence is to find an external implementation of the desired command, and then, if the shell has implemented it as a built-in, run the built-in. (For built-ins that aren't special built-ins.) Why does POSIX have this requirement for an external implementation to exist before allowing an internal implementation to be run? It seems... arbitrary, so I am curious.  |
| Changing the Visuals of GRUB in Manjaro Posted: 30 May 2021 09:04 AM PDT I am looking to make grub look nice. I know GRUB-Customizer exists but I have been told its incompatible with Arch. It is not in the pacman repository. So how would I make it a bit nicer.Mostly by increasing font-size and reordering and renaming the boot options. Going above and beyond would be putting OS icons in.  |
| Multiple images on root window with ImageMagick Posted: 30 May 2021 10:12 AM PDT I don't run a desktop environment, but instead use a bare window manager (StumpWM). Thus, my usual method for setting a desktop background is to run display -window root <image file> from a WM startup script, which does what I want. When using multiple monitors, the X root window stretches across both and includes dead space. Thus, running that command line causes the image to either be stretched or tiled across the entire window, which isn't useful. I can use -geometry to display an image on either monitor, but if I run that again (to view on both monitors) it overwrites the other. There doesn't seem to be any ability with display to display two images in one invocation. How can I use display to display different images on both monitors? Alternatively, how else can I get the "desktop background image" effect without a desktop environment?  |
| Building python with openssl support Posted: 30 May 2021 10:01 AM PDT I have the following directory structure: nchambers@nchambers-305E4A-305E5A-305E7A:~/mini-bin$ la 2to3 cpp-5.3.0 gcov-5.3.0 grmid-5.3.0 objcopy-2.25.1 python3.5-config .sources 2to3-3.5 elfedit-2.25.1 gcov-tool-5.3.0 grmiregistry-5.3.0 objdump-2.25.1 python3.5m strings-2.25.1 addr2line-2.25.1 g++-5.3.0 gfortran-5.3.0 gserialver-5.3.0 pydoc python3.5m-config strip-2.25.1 aot-compile-5.3.0 gappletviewer-5.3.0 gij-5.3.0 gtnameserv-5.3.0 pydoc3 python3-config x86_64-unknown-linux-gnu-c++-5.3.0 ar-2.25.1 gc-analyze-5.3.0 gjar-5.3.0 idle pydoc3.5 python-config x86_64-unknown-linux-gnu-g++-5.3.0 .archives gcc-5.3.0 gjarsigner-5.3.0 idle3 python pyvenv x86_64-unknown-linux-gnu-gcc-5.3.0 as-2.25.1 gcc-ar-5.3.0 gjavah-5.3.0 idle3.5 python2 pyvenv-3.5 x86_64-unknown-linux-gnu-gcc-ar-5.3.0 bash gcc-nm-5.3.0 gkeytool-5.3.0 jcf-dump-5.3.0 python2.7 ranlib-2.25.1 x86_64-unknown-linux-gnu-gcc-nm-5.3.0 .binaries gcc-ranlib-5.3.0 gnative2ascii-5.3.0 jv-convert-5.3.0 python2.7-config readelf-2.25.1 x86_64-unknown-linux-gnu-gcc-ranlib-5.3.0 .build gcj-5.3.0 gorbd-5.3.0 ld-2.25.1 python2-config rebuild-gcj-db-5.3.0 x86_64-unknown-linux-gnu-gcj-5.3.0 c++-5.3.0 gcj-dbtool-5.3.0 gprof-2.25.1 ld.bfd-2.25.1 python3 size-2.25.1 x86_64-unknown-linux-gnu-gfortran-5.3.0 c++filt-2.25.1 gcjh-5.3.0 grmic-5.3.0 nm-2.25.1 python3.5 smtpd.py nchambers@nchambers-305E4A-305E5A-305E7A:~/mini-bin$ la .sources/ bash-4.4-beta binutils-2.25.1 boost_1_60_0 gcc-5.3.0 Python-2.7.11 Python-3.5.1 nchambers@nchambers-305E4A-305E5A-305E7A:~/mini-bin$ la .build/ bash-4.4-beta binutils-2.25.1 boost_1_60_0 gcc-5.3.0 Python-2.7.11 Python-3.5.1 nchambers@nchambers-305E4A-305E5A-305E7A:~/mini-bin$ la .binaries/ bash-4.4-beta binutils-2.25.1 boost_1_60_0 gcc-5.3.0 Python-2.7.11 Python-3.5.1 nchambers@nchambers-305E4A-305E5A-305E7A:~/mini-bin$
Generally, tar balls go in .archives, unpacked sources go in .sources, building happens in .build, and the final binaries are store in .binaries. I then symlink the binaries from .binaries to ~/mini-binwhich is on my $PATH.I know its a weird workflow, but it works for me. Anyways, I am looking to rebuild python-2.7.11 (and 3.4.0, but am starting with 2.7.11) from source. It builds fine on my system, but I need it to build with ncurses, readline, ssl, etc support. Do I have to compile these libraries from source? If so, where would I put the libraries? How do I tell python to build with them. Thank you and have a good day!  |
| cURL does not recognize certificate Posted: 30 May 2021 07:04 AM PDT At our company they enforce a web proxy which breaks SSL connections and replaces the certificate by its own fake certificate. (To be precise it uses a proxy cert which is signed by the company cert.) In order to download from a https URL I therefore have to make my system trust that fake certificate (or disable certificate checking). I therefore added both the proxy cert and the company cert to both /etc/ssl/certs/ca-bundle.crt and /etc/ssl/certs/ca-certificates.crt. (Both link to the same file.) Now downloading with wget works fine, however downloading with curl does not work, because curl is not able to verify the certificate: * Rebuilt URL to: https://company.net/ * Hostname was NOT found in DNS cache * Trying 172.18.111.111... * Connected to 172.18.111.111 (172.18.111.111) port 3128 (#0) * Establish HTTP proxy tunnel to company.net:443 > CONNECT company.net:443 HTTP/1.1 > Host: company.net:443 > User-Agent: curl/7.39.0 > Proxy-Connection: Keep-Alive > < HTTP/1.1 200 Connection established < * Proxy replied OK to CONNECT request * successfully set certificate verify locations: * CAfile: /etc/ssl/certs/ca-bundle.crt CApath: none * SSLv3, TLS handshake, Client hello (1): * SSLv3, TLS handshake, Server hello (2): * SSLv3, TLS handshake, CERT (11): * SSLv3, TLS alert, Server hello (2): * SSL certificate problem: self signed certificate in certificate chain * Closing connection 0 curl: (60) SSL certificate problem: self signed certificate in certificate chain
What might be wrong? How can I debug further?  |
| Port forwarding for VPN connection Posted: 30 May 2021 08:04 AM PDT I'm using a public wifi hotspot. Usually when I connect to these, I immediately connect to my college VPN. On this hotspot, only browsing works (no program other than a browser seems to be able to access the internet, this includes ping commands from the terminal). I'm guessing this is because of the firewall in use by the hotspot provider. I'm given to understand that it should be possible to tunnel all of my traffic through an SSH tunnel, pointing to the correct port. I can set up a server on my home network to tunnel to, but it does not have a static IP. Is there a way around this, or possibly an easier way than SSH tunneling? --Update-- I've since set up a raspberry pi with a static ip on my home network. Can I either tunnel all of my traffic over ssh, via the RPi, or even just tunnel the VPN connection (that I would normally use, were the ports it uses not blocked over ssh (I'm not too worried about latency).  |
| md5sum command binary and text mode Posted: 30 May 2021 10:41 AM PDT The GNU md5sum command has two modes: binary mode and text mode. I guess the difference is only on how newline characters are handled? Am I right? On GNU/Linux, the two modes always produce same result, so the only use of -b and -t options is to indicate the flag (* or In what circumstances can the modes produce different results? On Windows/MacOS systems? (Versions for these platforms available?)  |
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