.bashrc is the primary configuration file for the bash shell.

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364
votes
8answers
675k views

How to correctly add a path to PATH?

I'm wondering where a new path has to be added to the PATH environment variable. I know this can be accomplished by editing .bashrc (for example), but it's not clear how to do this. This way: export ...
16
votes
3answers
14k views

using export in .bashrc

I have noticed in my .bashrc, that some lines have export in front, such as export HISTTIMEFORMAT="%b-%d %H:%M " ... export MYSQL_HISTFILE="/root/.mysql_history" whereas other have not, such as ...
150
votes
3answers
28k views

What does “rc” in .bashrc stand for?

Is it "resource configuration", by any chance?
37
votes
3answers
25k views

What is the difference between ~/.profile, ~/.bashrc, ~/.bash_profile, ~/.gnomerc, /etc/bash_bashrc, /etc/screenrc …?

Answers to the questions on SO and askubuntu, along with poking through (and reading headers of) $HOME and /etc/, indicate a number of files that can be used to set environment variables, including: ...
15
votes
2answers
2k views

.bashrc overwritten but still sourced — how can it be recovered?

Usually when I find a command I want to alias, I echo it to my .bashrc like so: [up button pressed to last command, then line edited so that it reads] $echo "command-i-just-did" >> ~/.bashrc ...
2
votes
1answer
4k views

.bashrc doesn't get executed

I have a user (non-root) which has a ~/.bashrc file with some aliases in it. But it doesn't look like the file is executed at log in time. If I do source ~/.bashrc then it does what it's supposed to. ...
3
votes
1answer
270 views

Bash scripts ran from from gnome/nautilus don't have enviroment variables

In my ~/.bashrc and ~/.profile I have some variables set to some filepaths: export MY_VAR1="/path/to/somewhere" In my ~/bin/ (which is added to my PATH) I have a few scripts that rely on those ...
2
votes
3answers
501 views

What is the difference between ./script and . ./script? [duplicate]

Possible Duplicate: Using ‘.’ to execute files in bash I was trying to figure out how to export my environmental via script instead of changing my .bashrc file. I found this old useful ...
25
votes
3answers
3k views

Multicolored Grep

I'm trying to get each grep command to highlight it's results in a different color. I can do it manually with a line like this: ls -l GREP_COLORS='mt=01;32' grep c | GREP_COLORS='mt=01;31' grep o | ...
17
votes
4answers
8k views

How can I find a rogue alias declaration?

I'm trying to find where a specific alias has been declared. I've searched all the usual places I know to look for aliases: ~/.bashrc ~/.bash_profile /etc/bashrc /etc/profile With no luck. I know ...
13
votes
3answers
8k views

l, ls & la — what are the differences, and are there more of these commands?

So, through typing several commands I've found that there's not only ls, but l and la too. There doesn't appear to be any man entries on Ubuntu 12.14. They all appear to do similar things with minor ...
6
votes
1answer
411 views

Change the location of .bashrc

Is it possible to change the location of .bashrc from /home/orhanc/.bashrc to some other directory?
20
votes
3answers
1k views

Why does bashrc check whether the current shell is interactive?

On my Arch install, /etc/bash.bashrc and /etc/skel/.bashrc contain these lines: # If not running interactively, don't do anything [[ $- != *i* ]] && return On Debian, /etc/bash.bashrc has: ...
10
votes
2answers
1k views

Is it OK to use “.” to run files instead of source - in .bashrc in Ubuntu and OS X?

OK, so source runs the script in the current shell and . separately, as detailed in running script with ". " and with "source " for example, but, specifically, in my .bashrc file, ...
6
votes
1answer
653 views

Is there a Bash file that will be always sourced in interactive mode no matter if it is login or non-login?

As far as I know the interactive shells may be login or not login and the start up files for them are different. If interactive + login shell → /etc/profile then the first readable of ...
2
votes
1answer
465 views

Populate PS1 asynchronously

I have a few git svn related functions that see if I have to pull/push from/to the repository. My problem is that the functions I've written to gather this information are too slow. I'd like to make ...
5
votes
4answers
2k views

disabling job control in bash (CTRL-Z)

It happens to me sometimes, that I press CTRL+Z by accident and my application disappears into background. I know, I can bring it back with fg, so it's not such a big deal. But I am wondering about ...
4
votes
1answer
152 views

Load aliases from .bashrc file while using sudo

I have set aliases for a few programs in the .bashrc file, and they work fine without sudo and they don't with sudo. Is there a way to get those aliases work with sudo? For example: nano text.txt ...
3
votes
1answer
208 views

Invoke subshell command with loaded rcfile

I have some Python code that does: (this is a simplified version) shell = os.environ['SHELL'] os.environ['PATH'] = ... # some new PATH value if call(shell, '-c', ...
3
votes
1answer
168 views

What does . ~/.bashrc command do? [duplicate]

I was viewing my .bash_profile file, and I saw this written inside a block of if statement: if [ -f ~/.bashrc ]; then . ~/.bashrc Can someone explain what the second line is actually doing? ...
3
votes
4answers
963 views

Bash aliases/functions and command line options

I want to set an alias to start nedit together with command line option -noautosave (due to text files up to 500MB). What seemed to be easy: alias nn="nedit -noautosave $1 &" just raises some ...
3
votes
3answers
2k views

Issues with .bash_profile and terminal commands

I added some data to my .bash_profile to run two aliases ruby version 19 and the proper gems. As soon as I added the data I could not longer run any commands such as the MacPorts command port nor the ...
2
votes
1answer
242 views

Extract hostnames from non-hashed ssh known_hosts

I would like to extract hostnames/ips from .ssh/known_hosts file in all (known) format conditions: Hostname only hostname pubkey Hostname with ip: hostname,1.1.1.1 pubkey Hostname with ip that is ...
1
vote
5answers
53 views

remove an added path from PATH?

in my ~/.bashrc in Linux , I have a line that adds some paths to PATH, something like: PATH=~/mydoc:~/mypython:"$PATH" The purpose of adding ~/mypython is to use my self-installed python, rather ...
1
vote
0answers
1k views

CentOs7 Python 3.4 Install Method

This post relates to this question where I was asked to explain how I installed python3 on my system. I was attempting to install python3 on my system for development purposes. Something went wrong ...
1
vote
1answer
75 views

How can I prepending a character for every output of a command?

I'm running commands which I want to specifically group them by every command, as shown in the example below. Tried printing with echo -e '| $line' but it only affects commands that output the text ...
1
vote
2answers
2k views

Debian: How to resolve Xserver failure

I keep finding similar posts online but I can't really use the solutions in my case. in my /etc/bash.bashrc file, I have the following code placed at the very bottom: if [ -e /tmp/.X0-lock ]; then ...