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

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Convert all files in directory using FFMPEG

I'm trying to write a script to convert all the files in a directory to m4v, whilst trying to keep similar (if not the same) quality and compress the file to reduce the overall size. I've pieced ...
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Scrolling in tmux over SSH (PuTTY) [duplicate]

I'm SSH'ing into my RaspPi (Raspbian) with PuTTY and I want to user tmux in order not to worry about a connection ending while I'm installing something. My Problem is, that when I call tmux from a ...
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1answer
11 views

Installing GNU Parallel on Cygwin

Is this possible? I have googled and searched at length and found no answer to this question. How can I install GNU Parallel on Cygwin? I wish to run a command similar to this : Link Thanks.
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Stop automatic comments in my crontab

I have added the bellow cron jobs in my crontab : 0 5 * * * /bin/systemctl restart gb_subagent.service 28 13 * * * /home/comment.sh &>/tmp/errorcron.log 29 13 * * * bash ...
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1answer
21 views

Print line for word found in file in directory

Hello i am using this line find ./ -iname *txt | xargs grep "ququ" -sl>holis.txt To find "ququ" text in a txt file and then write the file name that does contain such word in the txt file, ...
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29 views

Look word inside file in directory

I am new at Bash. I have a directory tags with a lot of .txt files with similar names like this [coral/home/tags]$ ls: file1.txt file2.txt file3.txt file4.txt Each .txt file contains information ...
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1answer
22 views

How To Quickly Switch Paths (in Bash)

Sometimes, usually when installing packages with brew, I want to disable/remove certain parts of my path, and then later restore them. I haven't been able to find an easy way to do this, and while I ...
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2answers
17 views

Mac OS .bash_profile errors

I'm running Mavericks 10.9.5 and I have tried to install Metasploit from this guide. It was until the Install Homebew I used echo PATH=/usr/local/bin:/usr/local/sbin:$PATH >> ~/.bash_profile ...
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61 views

Linux's write command issue

I'm trying to send a message to myself through write command because I want some scripts running in the background and being able to echo things to the terminal where I am. So, I get always the same ...
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1answer
19 views

Multiple input files and output files in awk

I have a folder full of text files named 000.txt to 181.txt. How can I process all of them (on the command line) with the same awk script (program.awk) and send them to their respective output files ...
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20 views

Which .bashrc file to edit

On my raspberry pi (running raspbian), I'd like to edit the .bashrc file so that various actions can be performed at every login. However, I have found two .bashrc file on the system: one is located ...
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1answer
13 views

Do filtergraphs copy audio streams by default in FFMpeg?

I 've got the following command in FFMpeg: ffmpeg -i file_input.mp4 -filter_complex split=2[i1][i2];[i1]scale=trunc(oh*a/2)*2:480[o1];[i2]scale=trunc(oh*a/2)*2:640[o2] -map [o1] -map 0:a -pix_fmt ...
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40 views

Bash scripting parted for GPT

Using Bash & Python scripts in Ubuntu 12.04, we are delivering a disk image to customers as a file (generated by dd). Once dd’d to the new disk, we resize the partition to fit the disk. Now that ...
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1answer
12 views

How to confirm apt-get confirmation during mysql-server installation

I am trying to write bash script that will install mysql-server-5.6 I want to ask user for password and then I will use it during installation mysql-server and some other configuration. But my script ...
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1answer
11 views

How do I encode a hyphen in a Bash terminal's open command?

I'm trying to write a small script that launches Beyond Compare when I do an svn diff. I got it working up until so far: open -a /Applications/Beyond\ Compare.app "$6" "$7" To get the full ...
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1answer
10 views

Alias to shortcut from home folder not working

As per this question on How to set up a shortcut to a directory in Mac OS X Terminal? I've added the following alias: alias MeteorApps=‘cd ~/Documents/Github/MeteorApps’ By adding it to the bash ...
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How to get Fish shell and NVM both installed with Homebrew to work together?

I am trying to manage my packages for OSX using Homebrew as much a I can. I have installed both the Fish Shell and NVM using Homebrew but cannot get Fish to recognize my NVM installation. NVM ...
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17 views

Can bash `locate` command generate numbered results / aliases?

I want to avoid having to type or copy-paste a full path. Ideally, I would like to see and be able to do something like this: $locate test.txt 1 /dir1/test.txt 2 /dir2/test.txt $ vi !1
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Distinguish TAB and ENTER from C-i and C-m in .inputrc

The history: I'm remapping most of the basic commands to move, delete, search history for all my command-line based applications (Bash, Python, SQLite, etc) by modifying the .inputrc file in my home ...
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1answer
20 views

grep -l output filenames with spaces

I want to loop over files with for f in `grep -rsl "foo" . `: do sed -i -- "s/foo/bar/g" $f; done; But since filenames contain spaces, a filename is split whenever a space is found. How can I ...
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1answer
24 views

After creating .bash_profile…Terminal not working

I created a new .bash_profile file and entered the following: export PATH="usr/local/bin:usr/local/sbin:usr/local/mysql/bin:$PATH" I then deleted .profile. Because from what I learn't it causes ...
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26 views

How to copy file using awk based on time creation to some directory

I trying to copy a file to directory using awk filter based on time creation file #!/bin/bash dir=/home/resaputra23/pyexample/python2/* des=/home/resaputra23/pyexample/backup/ file1= stat $dir | awk ...
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Mac OS X: Shell command for Accessibility -> Sound -> Play stereo as mono? [duplicate]

The question is in the title. I need a quick way to turn the feature on and off every now and then. Is there a bash command for it?
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30 views

in linux using bash how can I split a text file based on percentage

I have a problem where I need to split files based on some arbitrary percentage. If I have 100 lines I need to have the file split by a 70 % / 30 %. The split program in linux does not give me the ...
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1answer
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Wrapping `time` (and similar keywords) in call from another script

I have a Bash script (let's call it clock) which should work as a wrapper similar to the time keyword in Bash, e.g. clock ls should do something and then run ls. Here is an example of this script: ...
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bash completion in msysgit by single or double tab

Single tab used to make bash complete current line, and double tab shown all possible variants. For example, if I have files (or git branches, or whatever is suitable in current context) "abc", "abd" ...
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327 views

Running `exec` with a Bash built-in

I defined a shell function (let's call it clock), which I want to use as a wrapper to another command, similar to the time function, e.g. clock ls -R. My shell function performs some tasks and then ...
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3answers
37 views

Create a new Mac Terminal command to copy folder

How can I create a new terminal command that copies a folder (this will always be the same folder) and it's contents to either the current directory (if no path is supplied) or to the path supplied. ...
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23 views

Command to see my current ip if proxy is applied only for a certain website

It might not be a relevent question here on so, but I tried on http://networkengineering.stackexchange.com and there are less users + they redirected me here. So, I am not a networking guy and I have ...
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2answers
21 views

GNU sort cyrillic lines ignoring the case

I have got a file in UTF-8 with lines of latin or cyrillic letters. I'm trying to sort it, ignoring the case. I have tried LC_ALL="ru" sort --ignore-case in.txt but still got cyrillic lines in ...
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Should I ignore .bash_rc, .bash_profile etc if I'm using Zsh?

Zsh configs go into the ~/.zshrc file. That’s where I’ve been putting my aliases, etc… But I want to know if I should be ignoring .bash_profile and those other files, and putting everything into the ...
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1answer
125 views

Mounting a directory from the host in boot2docker for Windows

I'm running docker 1.6 and boot2docker on a Windows 8.1 box. When I use the Boot2Docker Start shortcut, it takes me to a cygwin bash prompt where I can run docker commands natively. I'm having ...
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LXC: Automating running an application inside a container

I'm working on a project that automatically compiles, executes and tests the output of submitted programs in C, C++, Java and Python. Obviously this needs to happen inside some sort of secured ...
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1answer
11 views

Website updating from git (over ssh)

I have a script that I run over SSH, which updates my website from a Git repo. cd website-git git checkout master git pull # Update protected directory rsync -v -a --delete --exclude=db ...
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Why does sudo -n on Mac OS X always return 0?

It looks like sudo -n on Mac OS X (10.10.3) always returns 0 as a return code. So something like this will always show 0, regardless of whether the user has authenticated with his password first: ...
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3answers
205 views

How to redirect output of a command to a file when the command will prompt user inputs?

I have a command which will prompt user for some inputs and then output the result to the terminal. I typed the command like below to redirect the output to a file: $the_command > abc.txt But it ...
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1answer
132 views

How to make a bash script that names files with today's date

I'm trying to make a script to back up my we servers, but I have very limited knowledge with bash scripting. I want the script to name the backup file ht-"today's date". How would I go about doing ...
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1answer
19 views

Run a function from bashrc, but modify exported variable

I am trying to run a function from my bashrc that refreshes every minute and externalizes a variable. It looks like this: export CFN = '' _some_fn { export CFN = 'test' sleep 60 _some_fn ...
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40 views

How to echo string of another string shell variable

We would like to echo the value of a shell variable which has another variable string in its variable name. eg: we want the following output var1=1 var2=2 We tried several various forms similar to ...
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2answers
59 views

How to recursivly delete all JPG files, but keep the ones containing “sample”

How can I find and delete all the .jpg files in a directory tree with the exception of the ones containing "sample" in their filename? For example : a.zip -> keep it b.jpg ...
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2answers
33 views

What is the difference between the processes listed by `ps` and `ps -A`?

What is the difference between the processes listed by ps and ps -A ?
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1answer
21 views

Can't find the good Cygwin shell executable

I am working on Windows 7 and I need Cygwin for my project. I am trying to launch the Cygwin terminal from a Java programm and then write command lines but my problem is that I can't find the right ...
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16 views

Why the process of sleep command is always in sleep status?

Why the process of sleep command is always in sleep status ? Sleep status means waiting for I/O right ?
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2answers
34 views

SSH-AGENT could not open connection

I try to link my SSH key with SSH Agent. I'm on Windows 7 Pro, and I'm using Git Bash console. I've this folder structure: C:\Users\MyName.ssh\id_rsa Where I've put my SSH key files as follow: ...
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1answer
25 views

How to serach for a line which contains specific string in Bash?

I've got a file which contains some amount of lines, I want to look for a specific string, and if the file contains it, then I want to print a different line from the same file. for example, let's ...
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1k views

Who deals with the star * in echo *

Who deals (interprets) the * in echo * Does the echo see the star or the shell take care about it and return a list of filename .. What about cp temp temp*
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Creating a Package installer that will run an already made package installer

I am new to creating package installers. I am looking to create a package installer that First Runs an already created .pkg file (printer Drivers) then runs a post bash script that configures the ...
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1answer
34 views

Rsync delete only remove older source files

Ok, I could probably spend a lot of time writing a complex set of bash scripts that would accomplish this, but I'm hoping this functionality already exists somewhere. I have a device in my car which ...
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31 views

How to encrypt data in bitbucket without losing git diff tools?

Based on this question:encrypt files before sending them to cloud. considering openssl: For example when using openssl we can write the files fooenc.sh: #!/bin/sh openssl enc -bf -nopad -pass ...
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What issue exists when multiple lines of 'date' are used in bash?

I'm currently reading through a book on bash programming, Pro Bash Programming. At one chapter (Chapter 4) they ask what problem the following script has. I myself have no clue after reading through. ...