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

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3answers
83 views

I need to turn a series of commands piped together into an alias in .bashrc

sudo ifconfig wlan0 | grep 'inet addr:' | cut -d: -f2 | awk '{ print $1}' The above command when run from terminal outputs the right "internal" ip address. When I try to pass as alias like: alias ...
2
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2answers
76 views

Color PS1 based on previous command output [duplicate]

I have my current PS1 as follows. The $? output is really useful (second line). export PS1="\ ${PSOn_Blue}${PSBWhite}\t\ ${PSColor_Off} \$?\ ${PSColor_Off}${PSBGreen} \u\ ${PSColor_Off}${PSWhite}@\ ...
1
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0answers
30 views

why bash history overlap the prompt when scroll up in the history? [duplicate]

I customized my bash prompt, PS1 value. ~/.bashrc: Color_Off='\e[0m' # Text Reset BGreen='\e[1;32m' # Green BPurple='\e[1;35m' # Purple BWhite='\e[1;37m' # White ...
0
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1answer
203 views

Fedora 7 server export in .bashrc not getting set [duplicate]

I'm trying to set the JAVA_HOME environment variable in my .bashrc but every time I log back in it gets unset again to its original value, below is my .bashrc file # .bashrc # User specific aliases ...
2
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0answers
241 views

.bashrc alias not working [closed]

I have set up a few aliases in my .bashrc file, like the following: alias ras='rails server' alias res='redis-server' alias rc='rails console' alias be='bundle exec' # git alias's are as follows ...
1
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3answers
123 views

In bash, how can I erase an alias without logout? [duplicate]

I had an alias in my .bashrc and I really don't want it anymore. I erased the alias, but my bash already has this alias loaded. Can I erase this alias from this bash without logging out?
3
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1answer
87 views

Keep two bash history files, one with ignoredups, one with everything

For the purposes of looking at which commands I am using the most, I'd like to keep a record of command I type in my bash history (even duplicates). But, for sanity and ease of use, I still want to ...
2
votes
1answer
2k views

How to colorize “root” in red in CentOS?

This is the content of /etc/bashrc, I would like to modify it for show "root" as red but don't know where to add the color code. # /etc/bashrc # System wide functions and aliases # Environment stuff ...
0
votes
1answer
90 views

Is it possible to change shell using bashrc when assigned a nologin default shell?

i have assigned a /sbin/nologin shell to a user while creating that user (specifying -s option in useradd), if this user logs in using SFTP and changes his .bashrc file, will he be able to change his ...
1
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3answers
489 views

What is the difference between '.' and 'source' in shells? [duplicate]

Possible Duplicate: running script with “. ” and with “source ” I have used both the dot command '.' and 'source' to reload a given rc file (typically to update my environment variables) ...
1
vote
1answer
640 views

execute bash script inside .bashrc

Hi I am curious if it is possible to execute a bash script inside bash rc. It would seem to create a infinite loop unless there was some way to tell it to not try and start a new shell. Here is an ...
0
votes
1answer
420 views

Login script for bash not loading

I am very confused about the login script for bash. I have always used ~/.bash_profile to configure my bash shell. Now I am on a new system just as a user: I am not root. This system was originally ...
4
votes
1answer
177 views

View shell function's current definition

So I am editing bashrc constantly, and I have a terminal open with a working function definition, although bashrc has been updated with a wrong function definition. (Because the definition do not ...
2
votes
1answer
212 views

How to make a permanent variable

In terminal: VAR="Extremely long and often used command" echo $VAR Output: Extremely long and often used command So far it works fine, but after restarting a terminal my variable doesn't ...
0
votes
1answer
394 views

Bash script for Angstrom

I have written a bash script to automate cross-compiling an OpenCV program: echo "Compiling started for: $1" if [[ $1 == *.c ]] then gcc -ggdb `pkg-config --cflags opencv` -o `basename $1 .c` $1 ...
2
votes
1answer
110 views

How to link different (incompatible) libraries at runtime depending on program?

I have a number of legacy codes that need to be compiled with specific (and often conflicting) libraries. To be specific I have a program which can only be compiled with g77 and another program which ...
10
votes
5answers
451 views

How to test for possible conflicts while using alias in bashrc?

Is there a simple way to list all the command conflicts that have occurred in the system due to the bashrc update involving alias commands? For example, someone writes alias ...
2
votes
3answers
222 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 ...
4
votes
3answers
945 views

Added bin directory to my path, can't execute commands in it with 'sudo command'

I made a bin directory in my home folder where I place all my scripts. Then in my .bashrc I added the following: export PATH=$PATH:/home/myusername/bin So I could access files I placed in there ...
5
votes
2answers
4k views

What is the difference between interactive shells, login shells, non-login shell and their use cases? [duplicate]

Possible Duplicate: Difference between Login Shell and Non-Login Shell? I have been looking at /etc/profile. bash.bashrc to see how they are run, and notice that some are executed by ...
4
votes
2answers
3k views

Global bash_profile

I realize there are /etc/profile and /etc/bashrc files for setting global environment variables and maybe I'm just misunderstanding their purposes, but... Is their a global bash_profile file? This ...
4
votes
1answer
1k views

Problems with automatically starting screen on SSH login

I'm looking at http://taint.org/wk/RemoteLoginAutoScreen to setup my server so it autostarts a screen session when I login via SSH. I have added the following to my .bashrc: # Auto-screen ...
2
votes
2answers
119 views

Is there any way I can fit this into my ~/.bashrc as a function?

I just discovered this useful bit of code on this useful-looking website. #!/bin/sh exec tclsh "$0" ${1+"$@"} proc main {} { set lines [lrange [split [read stdin] \n] 0 end-1] set count ...
1
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0answers
326 views

How to use history commands with readonly PROMPT_COMMAND?

I'm sometimes logged in on a host which I do not control and where PROMPT_COMMAND is readonly. Is there some way to work around this to run history commands anyway, for example using PS1? I've tried ...
2
votes
3answers
300 views

When the lines of a file or directory get too long, upgrade to ls list format?

Is there a way I can do this? For example if a gets a long name like: i-have-names-that-are-too-long-to-describe/ i-have-names-that-are-too-long-to-describe-2/ ...
0
votes
2answers
2k views

How to assign user root rights?

I have Suse Linux on my desktop. So I am root and "normal" user. Frequently e.g. to start tomcat or install/remove a program I should use sudo or switch to super user. But I have defined many aliases ...
2
votes
3answers
905 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 ...
1
vote
1answer
128 views

What's the right way to reuse this one-liner?

I recently came up with the following one-liner: for f in *.mp3; do sha1sum $f | sed -r 's/[a-z]//g' | cut -c1-2 | awk '{ print ($1 >= 255) ? $1 - $1 + (1/3)*$1 : $1 }' | xargs -i id3v2 -T {} $f; ...
9
votes
3answers
895 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 ...
2
votes
2answers
3k views

Where is the system profile that gets sourced at login on CentOS 5.8?

In CentOS release 5.8 (Final), where is the bash system profile? Is it /etc/profile ? I've added the following to source my ~/.bashrc file but haven't had any luck as it fails. I know it fails ...
2
votes
1answer
201 views

Alias in .bashrc doesn't seem to accept an argument [duplicate]

Possible Duplicate: In Bash, when to alias, when to script, and when to write a function? I'm trying to setup an alias in my .bashrc file, but it's not working as expected. I have this ...
7
votes
7answers
3k views

Doing simple math on the command line using bash functions: $1 divided by $2 (using bc perhaps)

Sometimes I need to divide one number by another. It would be great if I could just define a bash function for this. So far, I am forced to use expressions like echo 'scale=25;65320/670' | bc but ...
11
votes
4answers
748 views

How can I source the bashrc file every time I 'clear'

This might be a bad idea. The more I think about it the more I come to the realization that I probably shouldn't do it... but I've been trying and failing so I REALLY want to know how to do it, even ...
7
votes
1answer
903 views

How to detect when a shell is owned by a remote SSH session?

My question is similar to this one, but I'm looking for something slightly different. I have a notebook PC that I use to access Linux machines on a network in two different scenarios: I have a ...
2
votes
0answers
272 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 wrote to gather these informations are too slow, I'd like to make ...
14
votes
2answers
893 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 ...
1
vote
1answer
1k 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. ...
5
votes
2answers
479 views

Can a home directory have both .cshrc and .bashrc files?

Or are they both not allowed at the same time?