[gentoo-user] Environment variables don't export from within scripts
Hi all, I'm having difficulties exporting environment variables from within scripts. The problem doesn't seem to occur when exporting variables from the command line. To reiterate with an example, # export VARIABLE='test' # echo $VARIABLE works. However, # echo export VARIABLE='test' test_script # chmod 754 test_script # ./test_script # echo $VARIABLE does not work. I've also tried the above while omitting the 'export' command, to the same effect. I'm using bash as my shell. I figured that I would try the same with sh instead, but still nothing. I'm using: bash-3.0-r12 Is this a bug, or something that I'm doing wrong? Thanks in advance for your help. Kris Kerwin pgpHs75c4Bfs5.pgp Description: PGP signature
Re: [gentoo-user] Environment variables don't export from within scripts
On 1/2/06, Kris Kerwin [EMAIL PROTECTED] wrote: Hi all, I'm having difficulties exporting environment variables from within scripts. The problem doesn't seem to occur when exporting variables from the command line. To reiterate with an example, # export VARIABLE='test' # echo $VARIABLE works. However, # echo export VARIABLE='test' test_script # chmod 754 test_script # ./test_script # echo $VARIABLE On Linux/Unix, environment variables a passed from parent processes to children, never the other way around. This is unlike windows where environment variables are shared by all processes. So this is the expected and correct behavior, and thus, not a bug. -Richard -- gentoo-user@gentoo.org mailing list
Re: [gentoo-user] Environment variables don't export from within scripts
On Monday 02 January 2006 22:35, Kris Kerwin wrote: works. However, # echo export VARIABLE='test' test_script # chmod 754 test_script # ./test_script # echo $VARIABLE does not work. I've also tried the above while omitting the 'export' command, to the same effect. I'm using bash as my shell. I figured that I would try the same with sh instead, but still nothing. This cannot work. Scripts cannot export back variables to their parent shell, but only to their children. Read the first note here: http://www.tldp.org/LDP/abs/html/othertypesv.html The following will work: # export VARIABLE='test' # echo '#!/bin/bash' test_script # echo echo $VARIABLE test_script # chmod 754 test_script # ./test_script# writes 'test' -- gentoo-user@gentoo.org mailing list
Re: [gentoo-user] Environment variables don't export from within scripts
Thanks to all for helping. The source command did the trick, Alex. # echo export VARIABLE='test' test_script # chmod 754 test_script # ./test_script # echo $VARIABLE Get's changed to: # echo export VARIABLE='test' test_script # chmod 754 test_script # source ./test_script # echo $VARIABLE Thanks again. Kris Kerwin On Monday 02 January 2006 15:53, Alexander Veit wrote: Kris Kerwin wrote: I'm having difficulties exporting environment variables from within scripts. The problem doesn't seem to occur when exporting variables from the command line. The script is executed by a subshell that has it's own environment. export does not affect the caller's environment. http://www.gnu.org/software/bash/manual/bashref.html#SEC51 The source command (.) may help you. http://www.gnu.org/software/bash/manual/bashref.html#SEC56 -Alex pgpv8Y3VlBVjN.pgp Description: PGP signature
Re: [gentoo-user] Environment variables don't export from within scripts
On Mon, Jan 02, 2006 at 04:30:09PM -0600, Penguin Lover Kris Kerwin squawked: Thanks to all for helping. The source command did the trick, Alex. ?# echo export VARIABLE='test' test_script # chmod 754 test_script # ./test_script # echo $VARIABLE Get's changed to: # echo export VARIABLE='test' test_script # chmod 754 test_script # source ./test_script # echo $VARIABLE Or, you can run it as commands to the current shell by # . test_script samething as `source', really... W -- Pintsize: Hello Marten! I wasn't expecting you home this soon. We're playing Trolls Flame-Wars! It's an Internet message-board based role playing game. Sortir en Pantoufles: up 51 days, 16:58 -- gentoo-user@gentoo.org mailing list
