setting environment variable

madani · 03-06-2009, 10:29 AM

Hi Dear friends;

The distribution of linux I use is centos 5.2:

In the Makefile of a program that I'm trying to compile and use ( LMTO_DMFT ) there is this comment :

" # Please set environment variable LMTO_DMFT_ROOT (in ~/.bashrc) to the same path as DESTDIR in this Makefile "

I specified My DESTDIR path like :
" DESTDIR = /home/Noushin/ALL-LDA+DMFT/Haule/version_1.7e/bin "

Please tell me the exact expression that I must add to my ??? file?

Am I right, " ??? " is the file: /etc/.bashrc?

mesiol · 03-06-2009, 11:01 AM

Hi,

setting variable:
VARIABLE=VALUE (no spaces)
export $VARIABLE ( bring up in environment outside script)

You better use .bash_profile

johnsfine · 03-06-2009, 11:11 AM

Quote:

Originally Posted by mesiol

setting variable:
VARIABLE=VALUE (no spaces)
export $VARIABLE

I don't think that $ is correct.

Anyway, you can do the whole command as one command:
export VARIABLE=VALUE

johnsfine · 03-06-2009, 11:16 AM

Quote:

Originally Posted by madani

Please tell me the exact expression that I must add to my ??? file?

Code:

export LMTO_DMFT_ROOT=/home/Noushin/ALL-LDA+DMFT/Haule/version_1.7e/bin

Quote:

Am I right, " ??? " is the file: /etc/.bashrc?

I'm not an expert on that detail. I'm not sure of the operational difference between .bashrc and .bash_profile

I have always edited those files in my own home directory, not in /etc/
Especially for a change that seems to be specific to one home directory, I think it makes sense to edit .bash_profile in that home directory.

madani · 03-06-2009, 12:07 PM

Thanks for your kind answer. Would you tell me in detail what shoud I do? I'm a newbie!!

Quote:

Originally Posted by johnsfine

Code:

export LMTO_DMFT_ROOT=/home/Noushin/ALL-LDA+DMFT/Haule/version_1.7e/bin

I'm not an expert on that detail. I'm not sure of the operational difference between .bashrc and .bash_profile

I have always edited those files in my own home directory, not in /etc/
Especially for a change that seems to be specific to one home directory, I think it makes sense to edit .bash_profile in that home directory.

johnsfine · 03-06-2009, 12:15 PM

Create or edit the file /home/Noushin/.bash_profile and add the line I gave you.
Then log out and log back in again.

I'm assuming Noushin is the name you login with. Otherwise, that isn't the right bash profile to edit.