The environment-variables tag has no wiki summary.
1
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4answers
66 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
69 views
Who sets $USER and $USERNAME environment variables?
Also, will these variables always match currently logged-in username (they do on my Debian system)? Can I assume their availability in normal Unix(-like) systems?
I'm also curious why one would use ...
1
vote
1answer
46 views
Any other way to define an environment variable?
I'm quite new to Linux. Debian Wheezy is now running on my Laptop (64 bits).
I recently installed Oracle 11g R2 database for evaluation purpose, and defined environment variables (such as ORACLE_SID) ...
1
vote
1answer
21 views
Executing commands with PHP: using normal user, but its home directory is /root
I'm using a custom compiled installation of Apache + PHP, listening on port 80.
Apache is configured to run as a normal user, with the proper settings User and Group of the httpd.conf file.
After ...
3
votes
3answers
98 views
Where is the environment string actual stored?
But when we first time we adding a new name,we have to call malloc to obtain >room for a new list of pointers. We copy the old environment list to this new area and store a pointer to the ...
9
votes
4answers
236 views
Why do I have to re-set env vars in tmux when I re-attach?
I mainly work on a mac and ssh/tmux attach to a Linux machine to do my work. I have ssh-agent running on the Linux machine. I have
set -g update-environment "SSH_AUTH_SOCK SSH_ASKPASS WINDOWID ...
0
votes
0answers
17 views
Openbox doesn't seem to have correct environment variables set
I've installed Debian 7.0, and then installed Openbox on top of it.
I've got some executable files in ~/bin, and this line in my .bashrc and .profile:
export PATH="$HOME/bin:$PATH"
I can normally ...
1
vote
3answers
48 views
How to change locale environment variable?
I have generated en_US.utf8, et_EE.iso88591 and ru_RU.utf8 localisation files. Now if I try to change any of the locale variables to a ru_RU.utf8 or en_US.utf8, then this does not have any effect:
# ...
0
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1answer
33 views
Difference between sudo su - user and sudo -iu user [duplicate]
I was wondering if there were any difference (in environment ?) between doing
sudo su - user
and
sudo -iu user
From what I know:
By using
sudo su - user
I open a new shell as user, and the ...
4
votes
1answer
45 views
Permanent Environment Variable for all users
I want to have all users on the system to have an environment variable named SPI that points to /usr/local/share_ideas directory. How do I do it?
2
votes
1answer
26 views
Installing packages and tools on a local non-standard directory
TLDR: What environment variables should I update to guarantee that my system has access to everything a package provides when building it on a non-traditional path?
I usually don't have root access ...
3
votes
1answer
75 views
Why is uname -M returning an empty string?
On the exact same machine (AIX 6.1), in 2 different login shells (both ksh), with different user IDs, I can do uname -M; in one shell I get the system model. In the other shell I get BLANK! The only ...
1
vote
1answer
38 views
Effect if any of changing LD_LIBRARY_PATH environnment variable on emacs fonts?
The rendering of my emacs fonts changes if I define a specific list of directories under the LD_LIBRARY_PATH environment variable just before I call emacs. I changed this because I wanted to use emacs ...
1
vote
2answers
72 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'
$ ...
1
vote
1answer
69 views
Why ssh -nq -t can't see my environment variable?
I am executing a command on remote machine with -t flag ( to prevent the command from 'blocking' ) the prompt (somehow it works that way). So I am using ssh -nq -t root@ip but with this, the script ...
-2
votes
1answer
51 views
Paths in my bash profile do not work!
export PATH=/usr/local/bin:/Users/rodrigoprugue/Desktop/CRUNCH:~/phreeqc/bin:$PATH
export PARFLOW_DIR=~/parflow/parflow.r605/
export SILO_DIR=~/parflow/silo-4.7.2/
export ...
4
votes
4answers
136 views
Detecting X session in a bash script (.bashrc etc.)
Recently I put xset b off to my .bashrc. Now I'm annoyed by the error thet pops up when I log in via tty or via ssh, i.e. outside X session.
First thing that came in my mind was [[ -z "$SOME_VAR" ]] ...
2
votes
5answers
114 views
Environment variable does not seem to work in sudo
I use apt behind a firewall, so I specify a proxy in the http_proxy environment variable.
What I have done is added the following line to both .profile and .bashrc (for good measure) of the root ...
1
vote
4answers
43 views
Environment of another user in a child process
I have a parent process running as 'root' user. After fork(), execl() and setuid()/setgid(), the child process is started as another OS user (say user1).
Printing the environment shows that this is ...
0
votes
1answer
40 views
Colon breaks the variable subsitution [closed]
I am trying to lookup some C functions so that I could debug while using strace. So I setup a bash function to look it up in firefox (or links), but the substitution falls apart with : and escaping ...
1
vote
2answers
145 views
Backup to a synology NAS with bup
I am trying to make a remote backup to my Synology NAS (DSM 4.1) using bup.
I compiled bup on my NAS from source, did there:
BUP_DIR=/volume1/public/Backups/bup bup init
Initialized empty Git ...
2
votes
1answer
61 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? ...
5
votes
2answers
338 views
Prevent SSH client passing TERM environment variable to server?
I'm currently using Fedora 18 gnome-terminal, then started tmux multiplexer in it. After I connected to a CentOS 5 server via ssh command, I find:
ls result has no color
tmux, screen, hexedit, htop ...
1
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2answers
116 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, ...
1
vote
1answer
75 views
Variable expansion did not happen in /etc/environment
I changed the /etc/environment to add more directories to the PATH variable. But looks like $PATH in double quotes were not expanded and I could find any command from the shell and ...
1
vote
1answer
93 views
Set environment variable for all of tmux shells when gnome-sessions gets restarted
To solve this problem, I need to set the environment variable DBUS_SESSION_BUS_ADDRESS for all shells inside tmux every time I restart gnome without restarting tmux (this is often). How can I best ...
2
votes
1answer
214 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 ...
0
votes
2answers
111 views
Is there anyway to set a readonly environment variable?
I am using the following in openssh/telnet code, which sets the user environment.
setenv("TEST_ENV", "testing", 1);
But this can be modified by the user, is there anyway to make it readonly env ...
5
votes
1answer
91 views
grep: Ignoring GREP_OPTIONS to search case-sensitive
I have set GREP_OPTIONS="--ignore-case --color" in ~/.bashrc as I normally want grep to work case-insensitive. However, there are times when I need grep to actually search case-sensitive, but the man ...
1
vote
1answer
286 views
Set global environment variables at boot in Solaris 11
I am wanting to create a file in Solaris, so that I can export a few "items" whenever the machine is started up.
i.e.
I want to export ORACLE_HOME and ORACLE_SID and some other directories, of my ...
1
vote
2answers
112 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
269 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 ...
0
votes
3answers
223 views
LANG environment variable not respected
OS: Mint13
I have set my preferred language to zh-cn via the language support option.
This has changed the language of a small handful of things (synaptic, dates and times).
However everything else ...
6
votes
2answers
148 views
What does the Enlightenment desktop (E17) environment variable “PANTS=ON” do?
Installing the Enlightenment Window Manager (E17), results in an environment variable being set:
PANTS=ON
What does this environment variable do? What will happen if I set
PANTS=OFF
3
votes
1answer
113 views
Awesome: Incorrect timezone
Typically, I set the timezone of my computer's clock by changing the .bashrc file, appending, say, TZ='America/Los_Angeles'; export TZ such that whenever date is invoked the right time in the right ...
1
vote
1answer
118 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
98 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 ...
2
votes
3answers
766 views
Storing a list in a variable
I am trying to store the name of list of files that contain 781 in their name. I will be using this list to perform some operations and after that I will delete this list.
I have two options to do ...
0
votes
1answer
162 views
difficalty to save traceroute output in shell variable?
I need to filter and store traceroute output in shell variable (array). But I am getting some unusual output.
As I try to explain in following lines.
My present directory is temp, having some ...
0
votes
3answers
169 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) ...
3
votes
2answers
241 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
275 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 ...
3
votes
1answer
283 views
Why can I only use apt-get as super user ? Mint 14 Linux
Not sure what info you need here, if any. Just let me know. I have a proxy that bypasses the corporate net set in my profile file for both su and normal user. When I do a sudo or regular apt-get ...
2
votes
2answers
69 views
Can I change the shell used to run GUI applications from a Desktop Manager?
A bit of background
I'm a developer and I install most of my tools in my home folder. So my shell's rc file is full of JAVA_HOME, GROOVY_HOME, MAVEN_HOME, ... variables. To expose all these ...
1
vote
0answers
36 views
Modify environment variable in a running process [duplicate]
Possible Duplicate:
change environment of a running process
Is there a trick to modify an environment variable in a running process?
I need to add a repository at the end of PATH. I have ...
7
votes
2answers
250 views
Interactive shell with environment identical to cron
I am aware of a lot of pitfalls in the magic world of crontabs, but sometimes it would help troubleshooting a lot when you have some smart way to enter an interactive (bash) shell with exact identical ...
1
vote
3answers
825 views
How do I set an environment variable on the command line and have it appear in commands?
If I run
export TEST=foo
echo $TEST
It outputs foo.
If I run
TEST=foo echo $TEST
It does not. How can I get this functionality without using export or a script?
2
votes
1answer
60 views
Is there a way to define the preferred merge or diff tool under Unix?
I know that you can define the preferred editor by setting the EDITOR environment variable.
My question is if there is a similar solution for setting the preferred merge or diff tool.
7
votes
2answers
306 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
100 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 ...
