Questions tagged [bash]

Bash is a free shell for Unix-like operating systems from the GNU Project.

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Start tcpdump with script on system start

I'm trying to run a script on startup that runs the tcpdump command on Centos 7 and Centos 6. The aim is to start a rolling pcap when the system starts. I've tried using a cron with @reboot, but it ...
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AWS Lightsail - Wordpress stack - Backup script

I am regular bitnami wordpress stack user (setting up websites for clients and maintaining it, etc.). I used to use Updraft backup plugin to backup wordpress and push it to S3 account - however, I ...
Fresz's user avatar
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eval variable as command in shell script

I have command docker container exec -it man docker service ps $1 --no-trunc --filter "desired-state=running" --format "docker container exec -it {{.Node}} docker container exec -it {{.Name}}.{{.ID}...
whitebear's user avatar
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How do I ensure bash *never* expands paths in environment variables when tab-completing?

$ bash --version GNU bash, version 4.3.48(1)-release (x86_64-pc-linux-gnu) I normally using the above bash version on an Ubuntu 16.04 machine via MATE terminal. Currently however I am using macOS 10....
mystery's user avatar
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Linux SSL TCP file redirection?

In Linux it is possible to do such thing : ps aux > /dev/tcp/1.1.1.1/1234 And listening on the other side with ncat or nc. But is there a way to do it over SSL encryption ? Preferably with X509 ...
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How to ignore FIND errors in bash script?

I'm using a script to cleanup logfiles from a tomcat webserver. Problem: find $file_pattern will return an error if a filepattern did not match any results. The following is run by crontab: ...
membersound's user avatar
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can't find bash history executed via ruby net::sh library

In the hope for getting the commands that run via ruby net::ssh tool which is described as follow: Net::SSH is a pure-Ruby implementation of the SSH2 client protocol. It allows you to write ...
medBouzid's user avatar
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Mac Terminal or iTerm: Copy the current command (not including prompt)?

I am using Terminal or iTerm (iTerm2). Let's say I've typed in a command but haven't hit enter yet. Or maybe I used the up arrow to navigate through my command history. How do I copy the current ...
Kevin's user avatar
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Execute a command on screen termination

I have been using screen for a while, but the process I am running seems to terminate at times, closing the screen out. So I have to reopen the screen again. I was wondering if it was possible to ...
Blaine's user avatar
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How to programmatically get the list of directories that brew installs to?

I am writing a script that automates setting up my mac dev environment. I want to place the directories that brew installs first on my path, so that the default system commands are overridden by brew ...
user1124109's user avatar
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Replace a line containing special characters in all files recursively using SED MAC

I was trying to replace a line with another using SED on MAC OS X Terminal I have a scenario where I need to replace a line in all files present in a directory with another line. Both lines are ...
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Cygwin: Is it safe to pipe from /dev/clipboard to clip?

I am using cygwin on windows. Given a long list of strings in the clipboard: mail know trial posture wind census shelf concrete moon fee If I want to "unwrap" them, is it safe to use such a command:...
Bowi's user avatar
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How to use pipe into grep to exclude list of files under a second level directory?

I use ripgrep (rg) to list files under a directory. But I want to list files under a second level directory excluding the list of files under one of the directories. Basically if I have ./a/b/c I ...
SFbay007's user avatar
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infinite history in bash, when using multiple terminals(terminator) without losing commands and messed up order

I want infinite history, because I type a lot of commands I can forget at the spot and would like to have it stored somewhere as a reference. But by just setting HISTSIZE and HISTFILESIZE it does not ...
Martin Mucha's user avatar
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Windows 10 - GIT issues with cloning/pulling/pushing

I've got an strange issue. Since I updated my GIT on my Windows 10 machine, I get the error below. I use GIT for Windows with Bash. If I run GIT Bash with administrator rights then everything works ...
Jordy's user avatar
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I can't use the window manager of my choice, nor the display manager

I'm stuck with xfce and a text-only login screen. I've tried to run startkde instead of startx to see GUI and I got this $DISPLAY is not set or cannot connect to the X server. I tried to fix it ...
newtolinux's user avatar
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How to use poppler utils to extract annotations from PDF files?

I would like to use the command line tools from poppler-utils to extract annotations from pdf files. I have found some information under a similar question how to export comments from a pdf file and ...
Paul Rougieux's user avatar
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permissions issue when running rsync via crontab

I'm using rsync to backup directories on my local machine to a remote server. I have SSH key-based access set up and working for my user, so when I run the command: rsync --update -razvP --progress ~/...
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Invoking a new CMD window from WSL without waiting

Is it possible (without using a terminal emulator) to invoke a new CMD (or bash) instance in a new Window from within WSL, without having the calling command wait on the new CMD? The usual way to ...
Niayesh Isky's user avatar
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Load multiple hosts files

Think I already know the answer. But looking for a unicorn. Anyone know if there is a way to link one hosts file to another, or load 2 or more different hosts files? I have a hosts file that has ...
Rob C's user avatar
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How can I split output in more than 3 parallel processes in bash?

How can I split stdout to several parallel processes in one reading step? grep/sed is only an example file AAA AAA BBB CCC DDD EEE FFF cmd1 ($ cat AAA ) -----+---- cmd2 ( eg. grep "A" > fileA....
paf1's user avatar
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Raspberry Pi command not found, only printng out bytes

so i just installed Raspbian on my Pi and wanted to test some python scripts. However if i try to execute the script or even go into the Python IDE the shell freezes for some seconds and then prints ...
ravecow's user avatar
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How to change the default terminal prompt location to the right side?

Basically i need to know how to switch the default side of the prompt on (linux) terminal (which is on the left side of the screen normally). I don't think anyone else attempted this, or even thought ...
nordmagnus999's user avatar
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Libreoffice converting docx to pdf in headless mode hangs

Libreoffice: 6.3.1.2 cmd: --headless --convert-to pdf \"$basePath\" --outdir \"$dirPath\" Can we set timeout to operation? or any other suggestions. So I want result that operation is not successful.
inuryyev's user avatar
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Tagging files in macOs Finder... quickly

I'm looking to create keyboard shortcuts to tag files in the finder... without using Automator. The goal is to rapidly quicklook and tag files. I'm imagining: cmd-opt-0 -> tags selected file "...
Audiomatt's user avatar
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fusermount prepends /home to path when resource is busy

Problem: I created a bash script for SSHFS mount/unmount using: 1| dir=$(mktemp -d) 2| sshfs user@server $dir 3| cd $dir 4| bash 5| fusermount -u $dir 6| rmdir $dir Once these lines are ...
Majal's user avatar
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Texmacs Ubuntu 18.04.03 and Python

I am trying to install TeXmacs for Ubuntu, but it is not available via apt-get. The instructions on the site tells us to download a zip and run it through a bash script (https://www.texmacs.org/tmweb/...
Max Bergheim's user avatar
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1 answer
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How to combine values with Bash from two files

I have two files: Text 1: 1 element 2 element 3 element 4 element Text 2: line1 line2 line3 line4 line5 line6 line7 I need to get this result: 1 element at line1 2 element at line2 3 element at ...
Kein's user avatar
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Terminal on MacOS Mojave: Why is the prompt misbehaving when the window size is too small and how do I fix it?

I'm on macOS Mojave 10.14.4 using GNU bash, version 5.0.7(1). Basically my issue is that when the terminal window is too narrow to contain my full PS1 prompt in one line, it gets corrupted and starts ...
mantheflan's user avatar
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what does \eval "$__conda_setup" actually do?

I am having to track down an environmental issue with wxpython. I am curious how someone would poke around the os to find the location of the code that ensues here when executes. This explains the ...
Rudy 's user avatar
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Prompt doesn't scroll/clear until window resizing (using gdb/cgdb in bash)

I'm just learning to write C, and I have been having this problem while using gdb/cgdb. It's really annoying, to the extent that it discourages me from using the debugger entirely. I'm using WSL for ...
Aentum's user avatar
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Open a new tab in ConEmu, in the same directory (WSL)

Trying to achieve the same as this question. But with WSL (Windows Subsystem for Linux). ConEmu documentation states that shell via PS1 and ANSI: This is the only option available for Bash on Ubuntu ...
nephewtom's user avatar
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Supervisor and Shell command discrepancy: export variable from file working for in supervisor but not in shell, why?

suppose there's a file into /tmp/confs.sh, that looks like: export CONTAINER_CODE_PROJECT_ROOT="//var/www" and it's used inside a supervisor configuration file like this: [program:laravel-horizon] ...
Sim Sca's user avatar
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1 answer
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How can I write a command chain (including long queries/fetches) effectively?

I often need to write command chains like: curl api.example.com | jq '.files[].url' | xarg curl | grep 'Tel:\d+' > output But it takes a lot of trial and error: curl api.example.com | jq '.file[]...
fregante's user avatar
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1 answer
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Wait for a process to complete in Cmder \ ConEmu

Executive Summary: For software development debugging purposes, I’m using Cmder 1.3.12 for Windows 10 x64. If, say, I run in a cmd window java –jar app2.jar, I get output logs (inside cmd) and, as ...
caecilius's user avatar
1 vote
2 answers
697 views

Error when trying to add new line in the end of command

I have this code #!/bin/bash ls \n When i try to run it it keeps saying ls: cannot access n: No such file or directory I have many scripts that i want to add new line in the end of them but all of ...
Yassin Bahri's user avatar
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279 views

Windows 10 "bash" alias was deleted...WSL is installed

Hello for some reason another installation meshed up my "bash" alias in the windows command prompt. Does anyone know how to bind it? I have WSL installed and have been using it for the last year on ...
Kyle Pearson's user avatar
1 vote
0 answers
354 views

Some key bindings in `screen` do not work as expected

I recently installed screen for Raspbian Buster using bash and it doesn't seem to work completely. I am able to create a new window using Ctrl+a c and flip between the windows. I can see the windows ...
whatIsLife's user avatar
1 vote
1 answer
3k views

Git commit could not open '.git/COMMIT_EDITMSG': Permission denied

I'm experiencing 'permission denied' in my own repo in a shared server. I tried some found solutions from other stacks and it did not solve my issue. Is there anything else I should be trying? -bash-4....
Yeon-jae  Jwa's user avatar
1 vote
1 answer
213 views

How to make command line tool “ctpu” be recognized by my terminal?

I downloaded the ctpu command-line tool made by Google. This tool makes it easy to set up and run Cloud TPUs for deep learning projects. I successfully downloaded the tool to my ~ directory (Users/...
parrot15's user avatar
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How to stop a powershell command after n seconds?

Question How can I execute a powershell command in a script.ps1 (that for example starts an infinite loop in a WSL), wait 5 seconds, and then stop/break that command so that powershell moves to the ...
a.t.'s user avatar
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I can't connect ssh "write: Connection reset by peer" ubuntu

I try to connect using ssh but the following error is happening randomly ssh [email protected] -vvvv OpenSSH_7.6p1 Ubuntu-4ubuntu0.3, OpenSSL 1.0.2n 7 Dec 2017 debug1: Reading configuration ...
macuguen's user avatar
1 vote
1 answer
488 views

Moving directory from PC to server with Bash, SCP, and SSH

I am attempting to move my Flask Application directory from my PC to my Ubuntu server (hosted on Linode) using the Ubuntu Bash terminal (I'm running Windows). When I run this: scp -r C:\...
find_all's user avatar
1 vote
0 answers
125 views

WSL closes unexpectedly after pressing gc key sequence

I have Ubuntu bash as WSL on Windows 10 version 1903. I use zsh as my ubuntu shell + oh-my-zsh framework. Here is my ~/.zshrc file (comments removed): export ZSH="/home/thesetj/.oh-my-zsh" ZSH_THEME=...
TheSETJ's user avatar
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Liquibase via SSH to remote mysql instance

I am in the middle of automating deployment of my "LAMP" application. At the moment I have a Jenkins setup with a pipeline to deploy to the local environment which I have full control of. In an ...
JoSSte's user avatar
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3 answers
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Rsync --delete option isn't deleting hidden dotfiles in target

These are the steps I took: Create some test files: /tmp $ mkdir src tgt /tmp $ cd src/ /tmp/src $ touch .test{1,2,3} /tmp/src $ ls -la total 0 drwxr-xr-x 5 user wheel 170 18 Aug 15:02 . ...
vy218's user avatar
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1 vote
1 answer
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my virtual environment cannot be found

I'm on a PC windows 10 and always open git bash, then source activate my-env and open a jupyter notebook; somehow my-env broke and I get this error: "C:\bld\conda_1565126647711_h_env/etc/profile.d/...
Matan's user avatar
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570 views

Imagemagick 7.0.8-59 Error Message when Compressing PDF files

I am trying to compress a PDF with this Command: mogrify -compress jpeg -quality 50 path/to/file/* When running the Command I get this error message: Error: ICCbased space /N value does not match ...
gernot's user avatar
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1 vote
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279 views

Searching on Website from commandline "Please verify you are a human"

I am using bash to search for a term in a website and I get the following message (instead of the website): Please verify you are a human Access to this page has been denied because we believe you ...
Porcupine's user avatar
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0 answers
610 views

Changing files metadata under Ubuntu WSL

Is it even possible? According to this blogpost : "Windows file metadata is different from Linux file metadata. While it’s the OS’ job to store and update your file metadata, most of Windows ...
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