Create a custom environment variable that stores hostname

Zebe · 09-03-2008, 03:50 PM

Hi,

I'm trying to figure out how I can create a custom environment variable that contains the value of the hostname command.

I'd like to set this variable in .cshrc so I can use the variable to set different paths depending on the system I am logged into...

I was wondering if anyone has done this before?

Thanks for any help. I appreciate it.

CRC123 · 09-03-2008, 03:52 PM

There should already be one set up for you to use under $HOSTNAME

Verify with this:

Code:

echo $HOSTNAME

Zebe · 09-03-2008, 03:54 PM

Quote:

Originally Posted by CRC123

There should already be one set up for you to use under $HOSTNAME

Verify with this:

Code:

echo $HOSTNAME

That's the problem... some systems that variable exists, and on others it is undefined... but every system can run the hostname command fine. So I was thinking I could just create my own variable to compare from that has the value of the hostname command in it...

CRC123 · 09-03-2008, 03:58 PM

Oh ok, sorry

Here's how:

Code:

export YOUR_VARIABLE=`hostname`
or
export YOUR_VARIABLE=$(hostname)

place that in rc script on each system.

Zebe · 09-03-2008, 04:05 PM

Quote:

Originally Posted by CRC123

Oh ok, sorry

Here's how:

Code:

export YOUR_VARIABLE=`hostname`
or
export YOUR_VARIABLE=$(hostname)

place that in rc script on each system.

So would I be able to add that to .cshrc? I added what you have listed (both cases) and I keep getting undefined variable...

CRC123 · 09-03-2008, 04:14 PM

My bad, I didn't test it for csh. In csh, to set variable, do this in .cshrc:

Code:

set YOUR_VARIABLE=`hostname`

You have to add this to the .cshrc scripts of all the servers.