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.

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How to convert all mp3 audio in a folder to 8d or 9d audio in ubuntu terminal

In ubuntu terminal, is there any command to make all mp3 in a folder to 8d or 9d audio. Something like ffmpeg or other? According to mashable, 8D audio is essentially an effect applied to a stereo ...
Justine Chacko's user avatar
0 votes
0 answers
99 views

Unable to get input via Gedit embeded terminal

I have written the below bash script to compile and run my C programs, and added it to the 'Manage External Tools' list. #! /bin/bash cd /home/prm/Documents/Anubhav/C FILE="$(ls -Art | tail -n 1)&...
Anubhav Mishra's user avatar
0 votes
1 answer
482 views

SMB mount - no write access by terminal but by gui

I want to mount a SMB share by the following command of a bash script, which works perfectly: read -p "username : " user_var read -sp "password : " pass_var echo ...
David's user avatar
  • 17
3 votes
1 answer
1k views

Copy (or move) some files with their parent dirs

I have 2-3 levels and several folders but in all is a file with the name L_data.txt (among other files). I would like to copy only those L_data.txt together with their parent folders without any of ...
My Work's user avatar
  • 137
-1 votes
1 answer
1k views

How to de-source the source items in .bashrc without comment?

How to de-source the source items in .bashrc without comment? I want to make the source item do not work in the .bashrc file. The specific item is 'source ~/miniconda3/bin/activate' in .bashrc. I do ...
eric wen's user avatar
0 votes
1 answer
100 views

The meaning of the code [closed]

What is the code below means? if ["$SHLVL" =1]: then [-x /usr/bin/clear_console] && /usr/bin/clear_console -q fi Actually I'm trying to solve the problem in the picture:
user avatar
3 votes
3 answers
5k views

How do I resize multiple videos using ffmpeg?

I tried to resize multiple Video in different way on my slow server instance with Ubuntu 18. When generate a batch script file with: ffmpeg -i video1.MP4 -vf scale=854:480 smallvideo1.MP4 & ffmpeg ...
Mathis's user avatar
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1 vote
1 answer
66 views

supress generatenewblock output

I am issuing a command as follows: rando-cli generate 1 > /dev/null 2>&1 yet still I see output such as 2020-06-19T17:54:29Z [default wallet] keypool reserve 17 2020-06-19T17:54:29Z ...
Bruce's user avatar
  • 196
1 vote
1 answer
45 views

Desktop directory

I'm trying to run a Python script using the Desktop directory but it's not working. It instead outputs "bash: ./s.py: Permission denied" In the said script on top I put "#!/usr/bin/...
Tsar Gatxy's user avatar
0 votes
0 answers
31 views

Unable to Login after updating a Path Variable

I wanted to add a path to my flutter SDK in my Ubuntu. So I added export PATH= "$PATH: $HOME/Documents/Dev/App_Dev/flutter/bin" in the .bashrc file. After that whenever I started the ...
ankur_kh1's user avatar
1 vote
1 answer
2k views

Git_prompt branch no longer working after upgrade

I made a ps1 prompt a few years ago. Took a while to config it, now after upgrading it no longer works. The .bashprompt script (which gets loaded into my .bashrc along with git-sh-prompt) it will ...
alwayslearning's user avatar
5 votes
1 answer
1k views

How to move found files to another directory?

Hello to everyone I have the following script that works fine except the mv argument. The script basically searching for the files that were created at a specific time and the I need to move all of ...
michaelpnrs's user avatar
0 votes
1 answer
2k views

Append specific output from ubuntu terminal in a csv file

Above is the output of my command. I want to save the highlighted output into a csv file in append mode. They should be in the same row but in different columns. My final csv file should be like this ...
Fathr's user avatar
  • 1
0 votes
0 answers
2k views

How to set environment variables for executable file

I recently installed vcgencmd on my Raspberry Pi with Ubuntu ARM64; but I can't use vcgencmd command in .sh file without writing PATH=$PATH in it. I can use it normally on terminal. I tried adding ...
tmvkrpxl0's user avatar
2 votes
2 answers
2k views

certbot doesn't run from crontab

I installed certbot from pip3: # pip3 freeze|grep -i certbot certbot==1.5.0 certbot-apache==1.5.0 certbot-dns-digitalocean==1.5.0 I can run certbot from the command line as root, but I configured ...
Uri's user avatar
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1 vote
1 answer
2k views

Executing a script with chroot; permission denied

I want a script to execute a few commands in chroot. So, like this answer proposed scripting chroot, how to? I added the following part in my script, creating a .sh file with the commands I want it to ...
Douwe's user avatar
  • 63
0 votes
1 answer
212 views

echo 1 > “runcount.txt” not writing to the file

I am trying to maintain a count of how many times my script evaluates a specific condition to true and want to have its count written to a separate file. Below are the relevant contents of my file. #!/...
opensource-developer's user avatar
1 vote
1 answer
2k views

Can't Activate Environment // Ubuntu // Conda

I downloaded Anaconda 3 on Ubuntu VM. The conda command wasn't working so I used this command: source ~/.bashrc but it didn't work. Then I tried this command: export PATH=~/anaconda3/bin:$PATH This ...
Sarah Rodriguez's user avatar
25 votes
2 answers
9k views

User root can't write to file in /tmp owned by someone else in 20.04, but can in 18.04

In Ubuntu 18.04, I can create a file as one user in /tmp, and write to it as user root (despite the sticky bit being set on /tmp). In Ubuntu 20.04, I get a Permission Denied error as user root. Ubuntu ...
fideloper's user avatar
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1 vote
0 answers
201 views

How can I see what happens in the terminal without using xterm?

So I want to run a simple script in a terminal windows such that the terminal window opens, my command(s) are being executed, and then it closes with an echo line. Like #!/bin/bash rm -r /home/test ...
dggggst's user avatar
  • 11
1 vote
1 answer
129 views

Problem with executing alias of a command on Ubuntu 18.04

I created an alias file for holding alias nano .bash_aliases and then used the command alias ganache='./ganachescript' However, $ ./ganachescript 08:29:17.571 › Checking for update 08:29:19.052 › ...
user2994783's user avatar
1 vote
0 answers
636 views

Run bash script with prompts on startup, then start browser

I am creating a standard linux image for my customers, which I want to distribute to them as a backup. I have written a bash script - verifysetup.sh which checks whether the machine has already been ...
bighairdave's user avatar
0 votes
2 answers
429 views

Install latest version of dotnet-sdk by script

I am writing an installer script and need to install dotnet-sdk. I want to install the latest version which is 3.1 or in future 3.2 or whatever. Now I found that there are 2 versions in apt-get: user@...
Stefatronik's user avatar
0 votes
1 answer
224 views

print parameters from a for loop in bash

So, i want to print the parameters of the script that meet some conditions : t1=0 for i in $@; do if [ $i == "-1" ] || [ $i == "-2" ] || [ $i == "-3" ]; then t2=$(($t1+...
AlexP's user avatar
  • 103
2 votes
0 answers
3k views

xdotool simulate ctrl key holding

i need to simulate ctrl key holding for multi selecting action by ctrl and mouse click, so i tried this short key : bash -c "notify-send 'ctrl pressed' 'message';xdotool keydown Control_L ; ...
Soheil Paper's user avatar
  • 1,417
0 votes
1 answer
48 views

zero length variable added to for iteration not working

The question is simple . I have the following script in bash : #!/bin/bash a=`echo " 1 2 3 hello " | egrep -o "1"` b=`echo " 1 2 3 hello " | egrep -o "2"` c=`...
AlexP's user avatar
  • 103
0 votes
0 answers
449 views

Cron error - Text file busy

According this article I wrote cron job for database backups and if I run it manually on command line it works fine. But if script runs as cron job it fails on error: Text file busy Can somebody tell ...
Čamo's user avatar
  • 729
1 vote
1 answer
263 views

Vim: How to enter a normal editor command in shell before literally oppening

There is a command option when you run vim to open a file with command-line that i found when i was searching. here it is: vim "+ normal G" textfile When you use the command + normal G vim ...
Aprime's user avatar
  • 141
0 votes
2 answers
1k views

Bash script for periodically launching and killing an app

I have a short script which should launch an app, wait for an hour, then kill it and wait for a minute. It only starts the app. I tried to run the script both as a normal user and root, but nothing ...
macaque33's user avatar
0 votes
1 answer
3k views

Start terminal with command from crontab

I am trying to run a python script in a new terminal using crontab: Crontab: * * * * * /usr/bin/sh /root/teststart.sh teststart.sh: #!/bin/sh xfce4-terminal -e "/usr/bin/python3 /root/teststart....
Scripter's user avatar
  • 101
0 votes
0 answers
626 views

No such file or directory - bin error

I am trying to run a application through my tcl script. Typically I would go to the directory cd /OpenTimer/ and then type ./bin/ot-shell to run the application. In my script the line that executes ...
SH7742's user avatar
  • 1
3 votes
4 answers
4k views

Combine two commands into a single command

I'm looking for a way to combine these two so I can do it in one step from the command line. (I think %1 would be in the command.) convert Tess.jpg tess.tif tesseract tess.tif tess For example: ...
fixit7's user avatar
  • 3,117
7 votes
2 answers
3k views

Why does this awk script that runs on CentOS not run on Ubuntu?

(for reference, the code is likely also here: https://github.com/garyexplains/examples which is probably a better source than a video.) Would there be any reason why this simple script on CentOS ...
Nicholas Saunders's user avatar
2 votes
2 answers
3k views

Every time I open the terminal, several commands are already executed

I am a beginner and have not used Linux for a long time. Now I no longer know what I did then that every time I open the terminal 3 commands are executed, which I no longer need and which no longer ...
programmerNoob1234's user avatar
1 vote
1 answer
2k views

Errors executing bash script: Permission denied; No such file or directory

I'm just getting started with Ubuntu. I am trying to create a script that will do the following: Perform an ls -al on the files within a user's home directory and then save it to a file in my ...
George's user avatar
  • 11
1 vote
0 answers
133 views

How can I copy several directories with expect?

I have the following script which I adapted from https://stackoverflow.com/questions/1346509/automate-scp-file-transfer-using-a-shell-script. The script works very well for copying one directory. I ...
Zilore Mumba's user avatar
0 votes
1 answer
1k views

How to create a bash script to create images from pdf file and then crop all of the *.png images to 1920x1080 (using mogrify)?

I want to create a bash script that can be executed from everywhere, that does this following: It creates images from a pdf file using pdftoppm: pdftoppm fileinput.pdf -png img -r 305.3 After all of ...
feri ariyatmoko's user avatar
0 votes
1 answer
354 views

Bash script if condition does not work

I've got a bash script with some user inputs. So in order to run smoothly it is nessecary to run in a terminal emulator (so the user can make the inputs). Because of that i've wrote in the first lines ...
David's user avatar
  • 17
2 votes
0 answers
389 views

how to source bashrc from the eclipse terminal?

How do I configure eclipse so that I have access to bash complete with my aliases? I ran: [org.eclipse.Java ~]$ alias [org.eclipse.Java ~]$ source /home/thufir/.bashrc but that seems awkward. Also:...
Thufir's user avatar
  • 4,551
0 votes
2 answers
392 views

How to create a bash script using a bash script?

I am trying to create a post-installer script which itself creates a bash script (startapp script). This is the original startup script: #!/bin/bash if [ `wmctrl -l | grep -c "$2"` != 0 ] then ...
Chiggiddi's user avatar
  • 345
0 votes
0 answers
177 views

Modified .Bashrc file unable to boot ubuntu

I just update my .bashrc file in ubuntu to insert enviroment, after i reboot my pc i manage to show GRUB dual boot menu and when i choose ubuntu i gave me black screen, like this blank screen can ...
Muhamad Fadhil Surya Putra's user avatar
3 votes
2 answers
2k views

Rename multiple files with variable extensions to remove beginning and end of filename

I have multiple files I need to rename as below: 5891_1_0_AD3884_ACTCTCGA_S10.bam 5891_1_0_AD3884_ACTCTCGA_S10.bam.bai 5891_1_AD3875_GAGCTTGT_S1.bam 5891_1_AD3875_GAGCTTGT_S1.bam.bai ...
csijcs's user avatar
  • 33
0 votes
1 answer
4k views

Eclipses: no consoles to display at this time

How do I get a bash terminal or console from within Eclipse itself? but no prompt: I just see: no consoles to display at this time "Window->Show View->Other". Search for Terminal and select "Open"....
Thufir's user avatar
  • 4,551
0 votes
2 answers
1k views

When using a shell script, minecraft/java throws errors

Basics: This is a learning experience, I am new and doing this to expand my knowledge. So if you can please explain in detail...it would be appreciated. This is a new install of Ubuntu Server, it is ...
SyberSmoke's user avatar
2 votes
1 answer
1k views

Automatically Resize Partitions to Bare Minimum Needed to Store Files

I am currently writing a bash script in Ubuntu 20.04 LTS that automatically backs up devices that are running ubuntu-server 18.04 LTS. I don't think this is version-specific, so I didn't tag it that ...
Antonios P.'s user avatar
1 vote
1 answer
398 views

How to list partition in a dialog menu?

Is there any way to allow the user to select a partition from dialog’s menu (--menu) selection feature? If so, how do you do it? Of course, this does not work: dialog --menu "Select a partition" 0 0 ...
ut793's user avatar
  • 55
0 votes
1 answer
280 views

How does redirecting a command output to a file deals with opening and closing that file?

If we redirect a command such as sar -r 1> a_file.txt how does this works with opening, writing the output of the command and closing the file? In other words, how does redirecting a command ...
KansaiRobot's user avatar
2 votes
1 answer
2k views

How to give input to a script running using nohup?

I have a script running on my server, say test.sh. I executed it using the following command - nohup test.sh Now I want to pass an input quit to this script so that it'll terminate itself ...
jindan's user avatar
  • 193
1 vote
0 answers
496 views

Oh My Bash problem

After I installed oh my bash, I used some themes like agnoster for my bash and i started to code, but when I used command cd and pressed tab it said there's about 360 possiblities and there was at ...
Aprime's user avatar
  • 141
2 votes
1 answer
457 views

Restricted shell is not working for a newly created user (ubuntu 18.04)

I want to create a new user with a restricted shell so I : ln -s bash rbash # create a symbolic link to bash with a name "rbash" useradd -s /bin/rbash student # add a new user with a shell ...
Tomas.R's user avatar
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