2
votes
4answers
90 views

bash script and local env variable namespace collision

I have a bash script with a variable called VAR_A I also have a local env variable called VAR_A The bash script calls the command: echo ${VAR_A} I am not able to change the variable in the script ...
2
votes
2answers
43 views

What does `env COLUMNS=%S ps …` do?

I have seen the syntax env COLUMNS=%sin shell scripts, e.g. see the line below from the Helm package in Emacs: env COLUMNS=%s ps -axo pid,user,pri,nice,ucomm,tty,start,vsz,%%cpu,%%mem,etime,command ...
4
votes
3answers
65 views

Why does export -p exclude $_ variable?

As far I know, there are 3 ways to see exported variables: $ export -p | wc -l 50 $ env | wc -l 51 $ printenv | wc -l 51 As you can see, export -p misses single variable. It's a $_ one: $ diff ...
1
vote
1answer
32 views

Who is setting http_proxy?

On an Ubuntu system with bash as the default shell for the interested user, the http_proxy environment variable is set to a specific value in a fresh GNOME Terminal. The .bashrc file for this user ...
2
votes
1answer
54 views

Where do I place commands to automatically be exported for all users?

I have an embedded platform running an Arago linux distribution. Right now the only "user" is root but there will eventually be others, but I don't know how many or what user IDs they will have. ...
1
vote
1answer
55 views

$@ and 'set env $PATH' - Why should this statement go into .inputrc?

I have a line in my .zshrc that says: set env $PATH Apparently this affects the value of $@. I have read that $@ should be empty and that I should not have any set statements in my .zshrc (at least ...
3
votes
1answer
33 views

How to read value of variable, where the name of variable is the value of another variable

I think an example is in order. Consider I have these two environment variables setup (by a Continuous Delivery tool): PACKAGE_VER=1.2.3 and USE_VERSION_FROM=PACKAGE_VER. What I want now is a script ...
3
votes
3answers
225 views

How do I create a GUI application launcher for xfce4-terminal with fish but inheriting the environment variables from bash?

If I run fish from a bash prompt, it will inherit the environment variables I have set in my .bashrc and .profile files, including the important $PATH variable. So far so good. Now, I want ...
2
votes
2answers
77 views

Removing a directory from PATH

I'm trying to compile wxWidgets using MingW, and I have cygwin in my path, which seems to conflict. So I would like to remove /d/Programme/cygwin/bin from the PATH variable and I wonder if there is ...
0
votes
3answers
90 views

I have an environment variable for LANG set in ~/.profile but it is not getting set

I want to set the locale. I have this in my ~/.profile #language export LANG=en_GB.utf8 export TESTING123=en_GB.utf8 But when I type: echo $LANG $TESTING123 I get (LANG not set, but TESTING123 ...
8
votes
2answers
171 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 ...
1
vote
2answers
102 views

How to loop through xargs where each script uses a common env variable

Is it possible to initiate 10 of the same shell scripts which also initiate more copies, and have them all use the same env variable? For example: script.sh: #!/bin/bash export ...
0
votes
1answer
47 views

ENV variables in relation to xargs loops

Are env variables (set using export) treated differently when the same script is run multiple times simultaneously? That's a weird question, so here's an example I built out which is similar to my ...
0
votes
0answers
66 views

Application does not see environmental variables

I am running following 32 bit command on 64 bit system: LIBGL_DEBUG=verbose glxinfo32 -v -t | head -5 It's output says direct rendering: No (If you want to find out why, try setting ...
1
vote
2answers
36 views

Running a program to output in Dutch

I'm running KDE Arch linux and trying to update my system using pacman and have it output in Dutch. I've tried the following sudo LANG=nl_NL.UTF-8 pacman -Syy sudo KDE_LANG=nl_NL.UTF-8 pacman -Syy ...
2
votes
1answer
32 views

How to avoid warnings from subshells if the function in PROMPT_COMMAND is not defined?

I'm using the following code to get a nice prompt (including git information etc.): function set_prompt { # magic happens in here ;) } export PROMPT_COMMAND='set_prompt' However, sometimes I ...
1
vote
2answers
83 views

modify user-defined System Variables(that is a number) of remote Server machine using ssh?

I want to modify the value of a System Variable of a remote server . The IP of server is 172.16.22.53. The server runs Windows OS,and Cygwin instlled in it.In ...
2
votes
1answer
82 views

bash set env variable is not working in pdsh

I am using PDSH to control multiple servers through one command line. The command below works fine on individual servers, but when I enter the export command within PDSH, echoing it back is empty. ...
1
vote
1answer
54 views

exported variable disappears when I open a new terminal

I type this: export JAVA_HOME=/usr/lib/jvm/java-1.7.0-openjdk so that I can access that directory by typing cd $JAVA_HOME but every time I close and open the terminal I have to do this again and ...
1
vote
4answers
130 views

How do I run a program in a fresh shell?

I have a program that does a LOT of env manipulation. It sets PYTHONPATH and LD_LIBRARY_PATH and stuff like that. This program needs to run ANOTHER program, but in a fresh env, without all of the ...
0
votes
1answer
27 views

How do I display contents of a file where PATH environment changes are made?

Say I change the $PATH environment variable. If I'm asked to display the contents of the file where this change happened, how would I do this?
0
votes
3answers
55 views

Unset http_proxy enviroment variable

Updated 11/03: After doing some test with your suggestions, I only can be sure about one thing: there is something related to the graphical environment, because if I login through ssh or using ...
3
votes
3answers
161 views

Adding prefixes/suffixes to file names without typing it all over again?

I would like to do something like the following $ tmp=name* $ mv $tmp new_$tmp $ ls new_* $ new_name-with-stuff-i-dont-want-to-type name-with-stuff-i-dont-want-to-type Setting the environment ...
0
votes
0answers
263 views

Removing path in env variable PATH permanently [duplicate]

I have recently installed Code Sourcery's ARM EABI Tool Chain. All the executable binaries were installed in a separate folder. I thought that the bin path will be added to env variable $PATH. ...
1
vote
1answer
650 views

How to assign result of sed to variable

Below is a complete copy of a demo I'm using to to figure out to get the sed command to get rid of the spaces in a persons name, and compress it down to not have spaces. Once this is done, I want to ...
2
votes
3answers
62 views

Is it a good idea to put environment variables to /usr/local/bin

I'm using aws cfn to start ubuntu instances, and I need to pass variables provided in cfn launch script to the scripts on the instance. For example, I may pass "db-server=db-2.domain.com" and there is ...
4
votes
2answers
55 views

how to prevent exported environment variables to be recognized/accessible by a child shell (bash)?

So, I need to prevent loads of exported variables to be recognized by a child shell. The problem is an application (Wine+UDK) wont build projects with too many (>65535) bytes on the environment, ...
2
votes
2answers
368 views

How can I keep *all* environment vars for a specific command in sudo?

I have a script that sets several environment variables and then finally calls another script using sudo. The script run with sudo must be able to pick up those variables, and I'm not always going to ...
32
votes
4answers
1k views

What exactly is an environment variable?

I know that VARIABLE=value creates an environment variable, and export VARIABLE=value makes it available to processes created by the current shell. env shows the current environment variables, but ...
1
vote
1answer
631 views

bash: export: `--wait': not a valid identifier

When I run git-sh from my terminal it works fine. But I get the following warning. bash: export: `--wait': not a valid identifier What is this and how do I get rid of it?
2
votes
1answer
116 views

Screen - inherit current window's environment

In GNU Screen, how can I create a new window whose shell inherits the environment of the shell in the current window? The usual Ctrl+A C doesn't seem to do this.
1
vote
1answer
5k views

bash setenv command is not found

every body I am new in centos server I am getting a error while using following command setenv CLASSPATH /path/mysql-connector-java-ver-bin.jar:$CLASSPATH error is bash setenv ...
2
votes
3answers
611 views

Why do 'ssh host echo $PATH' and printing the $PATH after ssh'ing into the machine give different results?

On a particular host, when I ssh into the machine and enter echo $PATH I get /home/wxy/bin64:/home/wxy/bin:/usr/kerberos/bin:/usr/local/sbin:/usr/sbin:/sbin:/usr/local/bin:/bin:/usr/bin and if I ...
-3
votes
1answer
2k views

“not a valid identifier” when I do “export $PATH”

When I run export $PATH in bash, I get the error not a valid identifier. Why? Here's my ~/.bashrc file # ~/.bashrc: executed by bash(1) for non-login shells. # see ...
4
votes
4answers
795 views

What is the `editor` command in bash?

I was looking for a command that would hopefully open the current user's favourite text editor, because I am writing out some instructions with commands in a blog. I was expecting a command like edit, ...
1
vote
2answers
142 views

How to print shell variables and values to be able to copy/paste them?

In Bash 4.2.25, the set and env output is not escaped, so shell escapes and any non-printable characters won't be copy-pasteable. Take for example this shell session: $ export foo=$'a\nbar=\baz' $ ...
-3
votes
1answer
141 views

Paths in my bash profile do not work!

export PATH=/usr/local/bin:/Users/rodrigoprugue/Desktop/CRUNCH:~/phreeqc/bin:$PATH export PARFLOW_DIR=~/parflow/parflow.r605/ export SILO_DIR=~/parflow/silo-4.7.2/ export ...
4
votes
4answers
480 views

Detecting X session in a bash script (.bashrc etc.)

Recently I put xset b off to my .bashrc. Now I'm annoyed by the error thet pops up when I log in via tty or via ssh, i.e. outside X session. First thing that came in my mind was [[ -z "$SOME_VAR" ]] ...
3
votes
1answer
169 views

How to print apparently hidden environment variables?

Environment variables can be shown with env; but, some are not shown. For example... echo $EUID might produce as result of 1000 yet env | grep EUID produces no result. What is this type of variable? ...
1
vote
2answers
429 views

How do I set an environment variable for sudo in MacOS?

I have installed ServiceMix on my machine, and am trying to start it. The startup script is called start.sh. When I did ./start.sh, it gave me a Permission Denied message. So I used sudo ./start.sh, ...
2
votes
1answer
849 views

Users home path in a bash script

I'm writing a bash-script that will be run as a cron job everyday. Very basic, I was wanting to change the wallpaper daily. I have mint-14 with mate. The thing I'm getting caught up on right now ...
1
vote
2answers
434 views

OS X setting environment variables

I have OSX 10.8.2 with ZSH as my shell and iTerm as a terminal (don't know if the last thing is relevant). I have to mention that I'm relatively new to OSX. I'm trying to set up some environment ...
2
votes
1answer
958 views

How to run Steam from the Xfce desktop?

I've installed Steam on Debian 7.0 without any hassle, and I can run it by typing steam &. I've set it as a desktop launcher in Xfce, but when I ran it, nothing happened. Then I've check the ...
1
vote
1answer
190 views

Environment auto-install script

When I work, I often have to switch computers or virtual machines which means that every time I switch, I have to set up my (Linux) environment again. Is there a tool (in contrast to a simple bash ...
2
votes
3answers
123 views

Bash - setting environment vars from bash invocation line

I'm looking for a way to manipulate some env var, which will be available for processes spawned by bash. Something like the below (of course, the syntax is not correct) /bin/bash VAR_X=2 and then ...
3
votes
2answers
650 views

Environment variable set but not respected

I find the following behavior a little confusing, can someone please explain why it happens? In /etc/bash.bashrc I have: EDITOR=vim And it is indeed set: lev@home ~ $ echo $EDITOR vim I would ...
5
votes
1answer
582 views

Difference between environment variable and shell variable

It is said that environment variables are inherited in child processes but shell variables are not. However the following test shows shell variables are seen in child process just as environment ...
10
votes
2answers
848 views

How can I create a clean shell environment for temporary use?

I am a frequent answerer on a Unix-focused popular Q&A site, and in many of my answers I provide examples using the bash shell. However, each time I do this I have to manually go through the ...
3
votes
0answers
112 views

tab-expansion and “./” bash shell [closed]

Maybe someone here would be able to help me out. Have installed Ubuntu 12.04 LTS (kubuntu) on two machines. The .bashrc and .bash_profile files are identical as the file structures on each machine is ...
4
votes
3answers
944 views

Bash shells with different environment variables

I want to somehow enter a different bash shell with some altered environment variables. For example, if I run script bfin.sh and it contains something like export PATH=/home/me/bfin2012:$PATH I ...