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

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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 an being able to echo things to the terminal where I am. So, I get always the same ...
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10 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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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
9 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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1answer
17 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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9 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
8 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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8 views

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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15 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
18 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
23 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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2answers
23 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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13 views

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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1answer
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
12 views

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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15 views

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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4answers
313 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
35 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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21 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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2answers
21 views

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
87 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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16 views

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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21 views

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 ...
2
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1answer
126 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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34 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
53 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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32 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
19 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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33 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
24 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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4answers
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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10 views

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 ...
0
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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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0answers
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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4answers
27 views

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. ...
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1answer
23 views

Bash completion: global expansion by presing tab

In my desktop computer with opensuse 13.1 I can press tab in something like ls *.dat[TAB] and I get the autocompletion or with [TAB TAB] a list of possible matches. However, in my laptop with ...
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2answers
17 views

How to add the filepath to a specified line of a file using bash script?

I have the following bash code: echo "Enter an input path" read -e input_path OLDTEXT="\put(0,0){\includegraphics{/" NEWTEXT="\put(0,0){\includegraphics{$input_path/" find . ...
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1answer
31 views

How to select files with spaces in their name in a terminal?

When using gnome-terminal which is the default on Linux Mint, I can select files using a double click. For example: user@hostname $> ls 1.file.name 2-file-name 3 file name with spaces This ...
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1answer
18 views

Bash completion for cd alias

I'm using the following function to list the directory contents after changing the current working directory: function c() { cd $@; ls; } How can i enable bash directory name completion for the ...
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1answer
34 views

Older History of commands linux

I want to check history of commands on my linux server that dates 1month and 4 days old, but the history is showing up to 1 month only (I was late checking it earlier). I know the ' History ' command ...
3
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2answers
59 views

Parse file from certain line onwards in bash on Linux

I have a CSV file containing the following registers: Name,Phone,Country John,N/A,USA Max,N/A,USA Name,Color,Size John,Blue,M Max,Red,S How can I read only the registers from Name,Color,Size and ...
2
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1answer
16 views

How to substitute all occurrences after a certain number with sed in OS X

I am trying to modify a bad .csv file, where the last 'column' is broken into a different number of columns due to extra , characters. I want to use sed to keep the first 4 commas, and replace the ...
2
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4answers
84 views

What is a backslash colon doing in this chown command?

What is the \: doing in the command below? sudo chown nobody\: folder/ Is it some kind of mistake?