I know that environment variables can be set on the .bashrc file, but I need to set them from a sh script. I saw a lot of websites that teach this but it doesn't work for me.
if I do echo $DESKTOP returns me nothing.
Be aware, that this script does not change your login shell's environment. It only changes the environment of the script and commands invoked by this script.
If your script is not .bashrc and you want to make the variable available in your shell environment (ie, the command line), then you must "source" the script like this:
Not in my sh!
The classic error is to run the environment script normally, as a child, and then only that child and its children get to see it, but then that child and its children end and the parent and next child are unaffected.
The trick is that after you set a variable, only you see it, but when you export the variable, the receiving process will be your child. The ". myscript" sourcing above runs the script in the current shell so it affects you and your children.
Scripts pathed $HOME/.(shell_name)rc like ~/.kshrc and ~/.bashrc are run automatically as the ksh or bash process comes to life, which is nice but excessively often, as script calls script after script. The bourne shell sh only uses ~/.profile, but for that reason and the superset offered in ksh, few people use it interactively. Other shell programs run ~/.profile once for the login shell only.
Create a config file with the variables that you want to set.
The file will have variables like (this is just an example)
export TWO_TASK=GJEUGHD
export LD_LIBRARY_PATH_64=/opt/oracle/product/10.2.0/lib
export ORACLE_BASE=/oracle
export ORA_DEFAULT=true
Hi,
I have around 10 environment variables in my shell script. i want to set this all in a file and just call that file in my shell script. How can i do that ? Please help. TIA! (6 Replies)
Hi all,
This is my first post here. I need to set up a few environment variables with a shell script. Some are hard-coded, but some should come from other commands or as input from the user. How do I do that?
For example, I need to export a variable as such:
export DISPLAY=127.0.0.1:8.0
... (2 Replies)
#!/bin/bash
if ; then
ASS1_DATA_DIR=./
echo $ASS1_DATA_DIR
export ASS1_DATA_DIR
echo "data dir"
fi
if ; then
ASS1_OUTPUT_DIR=./
export ASS1_OUTPUT_DIR
fi
I want to create a new environment variable ASS1_DATA_DIR and ASS1_OUTPUT_DIR in bash and set them to the current... (4 Replies)
hi all,
I would appreciate if some one could explain me the difference between setting up the variables as shown below
HOME=${HOME:-"/home/user1"}
HOME=/home/user1 (1 Reply)
Hello All,
I am writing a script to set some environment variables which are required for a particular application. I understand that the environment variables set by Shell script can, at the max, be valid for the session. They will have to be set again once the session is closed and re-opened.... (1 Reply)
Is it possible to use environment variables within cron jobs. I am using a cron job to run a c program at regular intervals. The C program uses a library and i have set the library path in the LD_LIBRARY_PATH environment variable. But when i ran the job i got the error library not found!! Any... (1 Reply)
I've seen a few other threads like this, but they either went unanswered or failed to answer my question.
How do I set an environment variable in a Makefile?
What I'm trying to do is use GNU make to automate an ant build.
In order to run ant, I've got to first set a few environment... (1 Reply)
Hi all,
I am trying to set up some variables in a shell script. The variables contain values of various paths needed to run a java module. The problem is the variables dont seem to be setting at all.
here is what i am trying to do :
JAR_HOME=/home/was5/bdcms/scheduledjobs/lib
export... (6 Replies)
Hello,
I want to set some environment variables with this script:
ip=$@
echo Remote Computer: $ip
PERLDB_OPTS="CallKomodo=$ip:9000 RemotePort=$ip:9010 PrintRet=0"
export PERLDB_OPTS
PERL5LIB=/opt/komodo
export PERL5LIB
echo PERLDB_OPTS: $PERLDB_OPTS
echo PERL5LIB: $PERL5LIB
But it... (5 Replies)