Questions tagged [bash]
Bash (Bourne-Again SHell), is the default interactive user shell used in Ubuntu. Use this tag for questions specific to Bash, as opposed to generic POSIX shells.
11,225
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dpkg; unrecoverable fatal error 'plocate'
dpkg: unrecoverable fatal error. unknown system group 'plocate' in statoverride file; the system group got removed before the override,which is most probably a packaging bug
2
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Symbol gets cut off in custom bash prompt
I am using a custom bash prompt with this command that was an answer to this question:
It looks like this:
PS1=$'\e[1;33m\\t \e[36m\u\e[34m@\e[36m\h\e[;1m: \e[34m\w\n \[\b\e[;1;31m✘\] ${?/#0/\[\b\b\e[...
- 191
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2
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126
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Ubuntu terminal ignoring interpreter first line
I am Windows user running WSL2 with success over the last two years. I work on a project connected to a git repository. All devs work on mac/linux so all parts of this project are targeted towards ...
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1
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70
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Trivial pursuit : bash environment variables
I know this works:
FNAME="$(basename $LD_PRELOAD)"
FNAME="${FNAME%.*}"
Can this be expressed in a single line? These are two unsuccessful attempts, thus far:
${$(basename ...
- 43
7
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2
answers
1k
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Should I put functions in .bashrc, .bash_aliases or .profile
I have read this thread about where to put aliases.
Now, let's suppose that my custom command is quite elaborate (takes arguments in input, is composed of several commands run one after the other, I ...
- 375
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94
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i get this error when trying to kill pulseaudio
$ pulseaudio -k
E: [pulseaudio] main.c: Failed to kill daemon: No such process
Is there any other way?
I tried the pavucontrol fix but it didn't work.
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1
answer
1k
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How can I properly make a bash prompt with error colors and emoji?
After solving the first issue with my custom prompt I still have another one left.
When I cycle through my last used commands via the arrow-up and arrow-down keys I will sometimes have some characters ...
- 191
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1
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61
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How to hide command output, then run another command [duplicate]
I have this command which may output an error, so I hide it using &>/dev/null.
Now I would like to run this command, then run another command.
This is what I have now:
( aaa &>/dev/null )...
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1
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1
answer
134
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changing bash output format results in strange behaviour
I already changed my bash output format to something like this:
which I am very happy with. I achieved this by adding this code to the .bashrc:
set_PS1()
{
local RESET=$(tput sgr0 )
local ...
- 191
1
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2
answers
63
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How to hide desktop from Ubuntu Desktop Applications UI
I found the following link for changing file types application:
https://superuser.com/questions/21626/ubuntu-change-the-default-program-used-to-open-a-type-of-file
Here is the command for associating ...
- 267
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20
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Bash script for executing linux commands on remote machines using ssh key [duplicate]
I want to run a script to get details of hardwares and user details from multiple remote machines by login using ssh private key. this is my script
#!/bin/bash
# Check if the user provided a file
if [...
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1
vote
1
answer
125
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Cannot run bash script Cisco Anyconnect. "Sorry, you need user privileges to run this script." When executing as root
For work i need to install Cisco Anyconnect and i can't get it to install due to a rights issue. I have everything set up, i think correctly. I'm following this instruction.
After step 8 (executing ...
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4
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3
answers
627
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Search for a "string" or "String with Spaces" recursively that may be a file- or directory-name or a text inside a file
I would like to search for the string rstudio (and its different possible combinations mentioned below) recursively starting from /.
In some locations, rstudio is a string inside another file (but ...
- 43
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96
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VScode not opening on ubuntu 23.10
I tried running vscode but when I write code . in bash or open vscode via the icon, VScode doesn't want to open anymore for some reason, To be more specific the vscode windows do open, but none of ...
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2
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1
answer
125
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Cron not running script on boot
The main idea is to make my pc run a script on boot in wich x11docker takes care of lifting a container with a youtube video.
this is mi crontab -e:
@reboot /usr/local/sbin/script-exo.sh
script im ...
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116
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AWK issue on Bash script
I need to shortlist the logs between the particular timestamps.
I can achieve it by using the below command.
awk '$a>="Feb 5 10:44:*" && $a<="Feb 5 10:54*"' /var/...
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1
answer
39
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CDPATH help documentation—3
man bash says:
The variable CDPATH defines the search path for the directory containing DIR. Alternative directory names in CDPATH are separated by a colon (:).
A null directory name is the same as ...
4
votes
1
answer
545
views
Unzip to directory of the same name
I am trying to unzip files supplied by Google Takeout and need a command to unzip all zip files in a directory to a directory of the same name as the zip file to avoid conflicts.
The zip names cannot ...
- 197
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159
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How do I use CDPATH to cd to Documents no matter which directory I am in?
If the cd shell builtin doesn't see the target directory in the current directory, it consults CDPATH. If the target directory is absolute (begins with the root directory, /), CDPATH is not used.
...
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2
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116
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How can I echo double quotes around text [duplicate]
How can I get the double quotes to show for 1 second and ready?
echo -e " test.sh ""1 second"" "ready""
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2
answers
421
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Detect that the workspace has changed
I can change my current workspace in various ways, e.g. by clicking on some switcher widget, with some key combination, with a command in a terminal.
Is there a way to detect that the workspace has ...
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2
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789
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Using grep to search for line that begins with a variable whose value is a dollar sign
I found a lot of very similar problems, but not exactly this.
I have a text file with the following contents (no repeats, fixed 4 characters per line):
A1234
G1234
$1234
M1234
I'm trying to use grep ...
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2
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185
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Setting DEBIAN_FRONTEND remotely
Is there any way to set DEBIAN_FRONTEND=noninteractive when executing a script remotely via SSH?
Doing so I get this error:
sudo: sorry, you are not allowed to set the following environment variables: ...
- 2,493
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1
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152
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Ubuntu 22 shell scripts on desktop open in text editor instead of launching
I have some shell scripts (files *.sh) on my Ubuntu desktop, eg. startdoublecmd.sh or startlazarus.sh.
When using Ubuntu 20, those scripts started automatically upon double clicking on them.
Now I ...
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1
vote
1
answer
76
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Help command documentation explanation
Running help cd gives:
The variable CDPATH defines the search path for the directory containing
DIR. Alternative directory names in CDPATH are separated by a colon (:).
A null directory name is the ...
0
votes
2
answers
85
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How to monitor particular command or add extra functions to it?
I am attempting to implement mobile push notifications (utilizing the Docker ntfy service) for scenarios such as automatic system updates and Timeshift snapshot creation.
None of these commands are ...
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0
votes
2
answers
296
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cron unable to run .sh script - 22.04
I am trying to run a simple script that checks the battery percentage and shows it through a notification (notify-send).
The script runs correctly if ran from terminal manually: ~/path-to-script/...
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61
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Byobu doesn't source /etc/profile.d scripts
I'm using Ubuntu 20.04 and byobu. One of the scripts I have in /etc/profile.d will enable bash completion for kubectl and helm for all users. It works when the user logs in but not once they run ...
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440
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non-login shell sources $HOME/[.local/]bin to $PATH and I can't find why
OS: Ubuntu Desktop 22.04
I am initially logged in as user carl. I open a shell and echo $0, I get the confirmation that I am in a non-login shell. ("bash", no dash)
But when I then echo $...
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93
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Write a Bash Command File for OpenFoam to periodically change an entry
I am trying to use an OpenFOAM case called ConstVolt_0flow where I am advised to write a bash command-file that would periodically switch the entry in ConstVolt_0flow/system/Air/fvScheme from:
...
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-2
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Firefox Developer Edtion Don't show a icon in menu bar and task bar of Ubuntu. Even changing the .desktop file in /usr/share/application
I want to install a Firefox dev in bash, but I see this problem with an icon in the GNOME shell.
If open the normal Firefox, in the top bar appears a grayscale icon:
If you can help me I would ...
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0
answers
81
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Avoid logging empty commands in Bash
I am using the following lines at the end of my .bashrc file to log entered bash commands to Syslog:
export PROMPT_COMMAND='
RETRN_VAL=$?;
if [ -f /tmp/lastoutput.tmp ]; then
LAST_OUTPUT=$(cat /...
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49
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Hi can someone provide me a solution for soft link removal?
sudo ln -s /home/user/Downloads/msms/msms.x86_64Linux2.2.6.1 /usr/local/bin/msms
I created a wrong softlink in the afore mentioned script which I need to remove. Can someone please provide a suitable ...
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58
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How to autostart a jar file with swing GUI when booting Ubuntu
I'm trying to autostart a jar file with an .sh script:
#!/bin/bash
export DISPLAY=:0
java -jar /home/username/Desktop/jarfile.jar
The jar file is a Swing GUI application. When i manually start the ...
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votes
1
answer
77
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automating keyboard key press 9 times if alt key was pressed
I want to make an automation strategy, if I pressed the Alt key with any other key, it will simulate the keyboard key press 9 times for that key.
For example,
I press Alt + q, it will simulate ...
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vote
1
answer
172
views
What are the implications of using PROMPT_COMMAND like this?
I would like to insert the return code of the last command in reverse red color and inside brackets ([]) plus a colon (:) just before the bash (PS1) prompt. But, only if the return code is non-zero, i....
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167
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How do I set up the Bash shell to automatically line change after entering a command?
I could use that in zsh for automatically line change after entering a command, but I don't know how to do that in bash.
build_prompt() {df
enter code hereRETVAL=$?
prompt_status
...
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0
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2
answers
59
views
Retain file extension in a simple while loop (one line)
I have a simple string that will rename all jpeg files in a folder sequentially:
ls -v | cat -n | while read n f; do mv -n "$f" "pic-$n.jpg"; done
But I have a folder with many ...
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83
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Bash Script, Automated no and yes [duplicate]
I need to have a script that instructs the system to run an fsck on a drive but I only want it to run if the drive is not mounted "/dev/mmcblk0p2 /mnt/Share ext4 defaults 0 2"
Basically is ...
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vote
1
answer
90
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Linux directory gets random name each time mounted
I have two hard-disks each with Ubuntu, when I access the second hard-disk while being in the first one, the directory has long serial-like name, which does not allow for a quick cd alias.
Which ...
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364
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SyntaxError: Missing parentheses in call to 'print', while trying to run system
I am trying to run my system (Empire PowerShell), but it keeps giving me a syntax error. The system I used didn't support python3, so I had to install python2 which ended up working. But when I try to ...
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46
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I need to run a program, as sudo, on boot, in screen... Tried a few things but can't get it all to work
My goals are:
I have "myprogram" that needs to be run in sudo
I want to run it as a service at boot
I want it to run inside screen so I can monitor it
So I can do 1&2 just fine, but ...
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0
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115
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I need to run a script during first boot and want the CLI to open for possible input
Edit: I need a bit more explaining here. This is a one time only run personalization script for the computers that I have set up that I would like to run only on the first boot. After tweaking the ...
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2
votes
1
answer
308
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"notify-send" not running with "rclone" ( when used in a startup script )
I'm trying to run the following script at startup. I am able to see the notification only when I execute the script from the terminal, or when I run it as a program. So the issue is basically when run ...
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457
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Multiple packages installation using bash
As we all know, the command we use in order to install multiple packages is:
apt install package1 package2 package3`
Using the following method in a Bash script:
packages="package1 package2 ...
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233
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Why does my powershell script run with "pwsh" but doesn't with "sudo pwsh"?
I'm still somewhat new to Ubuntu / Linux so please bear with me if I'm not using correct terminology. I'm on Ubuntu 20.04 but I use Putty to perform everything via the terminal.
I'm using a collection ...
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2
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2
answers
501
views
How to move a set of files named as numbers in ascending order to another directory?
I have files inside a directory that are named as 00001.npy, 00002.npy, ..., 00150.npy, etc. The file names are increasing in ascending order.
I want to move all files whose name is between 00008.npy ...
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239
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command not found: shopt ON WSL Ubuntu 22.04
I inserted couple of env. variables such as:
export WOS_MONGODB_URI='mongodb://localhost:27017/...'
export WOS_AWS_REGION='us-east-2'
export WOS_AWS_ENV='dev23'
export WOS_SEED_MODE='test'
export ...
- 101
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0
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957
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How to reload .bashrc settings without logging out and back in again?
I created a script that add's the below commands to the .bashrc file. The purpose is I need to store the commands entered by the user into the .bash_history. The below commands are adding to .bashrc ...
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0
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288
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Changing LS_COLORS in Ubuntu 22.04 works in terminal but not permanently in .bashrc
I am learning linux thoroughly, I have downloaded my first VM with vmware-fusion on my mac m1.
I have tried many times to update the .bashrc file but the one thing that is not changing for some reason ...
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