Environmental Variables

ambavaram · 05-16-2008, 12:06 PM

How to set environment variables on RHEL 4.

I have configured Apache and Tomcat on my RHEL 4 machine.As per their instructions i have created some environment variabls in .bashrc file after created those variables both apache and tomcat working fine.When i logout and login the system it's ok there is no problem on both apache and tomcat whenever i restart the system both are not working again it was showing error messages.

pls help

lensman3 · 05-19-2008, 08:44 PM

You might put the environment variables into a file, then run the "source <file>'. Bash uses the source command as does the C-shell. I think for the sh-shell, the same thing is done with ". <file>". (It needs the dot). This is the ONLY way that you can set environment variables in the current running shell, since if you spawn a shell to run the <file>, the child's environment wouldn't set the parents. (Can't teach an old dog new tricks).

I think the real problem is which .bashrc's are being read by a login shell and later spawned shells. It sounds like from your description that the login shell is not executing the correct bashrc.

Also Selinux could be undoing your bashrc's. I've heard that it can do that. Look at the "restorecon" command. I turn off Selinux. I have been too lazy to learn its in and outs. And it seems to get in the way.

05-16-2008, 12:06 PM	#1 (permalink)
ambavaram Registered User Join Date: Jan 2008 Posts: 20 OS: fedora8	Environmental Variables How to set environment variables on RHEL 4. I have configured Apache and Tomcat on my RHEL 4 machine.As per their instructions i have created some environment variabls in .bashrc file after created those variables both apache and tomcat working fine.When i logout and login the system it's ok there is no problem on both apache and tomcat whenever i restart the system both are not working again it was showing error messages. pls help

05-19-2008, 08:44 PM	#2 (permalink)
lensman3 Registered User Join Date: Oct 2007 Location: Littleton, Colorado USA Posts: 470 OS: xp 64 sp2 Fedora Core 8 (vmware xp core 8 x32) Minix	Re: Environmental Variables You might put the environment variables into a file, then run the "source <file>'. Bash uses the source command as does the C-shell. I think for the sh-shell, the same thing is done with ". <file>". (It needs the dot). This is the ONLY way that you can set environment variables in the current running shell, since if you spawn a shell to run the <file>, the child's environment wouldn't set the parents. (Can't teach an old dog new tricks). I think the real problem is which .bashrc's are being read by a login shell and later spawned shells. It sounds like from your description that the login shell is not executing the correct bashrc. Also Selinux could be undoing your bashrc's. I've heard that it can do that. Look at the "restorecon" command. I turn off Selinux. I have been too lazy to learn its in and outs. And it seems to get in the way.