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Old 09-03-2008, 04:50 PM   #1
Zebe
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Create a custom environment variable that stores hostname


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.
 
Old 09-03-2008, 04:52 PM   #2
CRC123
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There should already be one set up for you to use under $HOSTNAME

Verify with this:

Code:
echo $HOSTNAME
 
Old 09-03-2008, 04:54 PM   #3
Zebe
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Quote:
Originally Posted by CRC123 View Post
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...
 
Old 09-03-2008, 04:58 PM   #4
CRC123
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Oh ok, sorry

Here's how:

Code:
export YOUR_VARIABLE=`hostname`
or
export YOUR_VARIABLE=$(hostname)
place that in rc script on each system.
 
Old 09-03-2008, 05:05 PM   #5
Zebe
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Quote:
Originally Posted by CRC123 View Post
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...
 
Old 09-03-2008, 05:14 PM   #6
CRC123
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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.
 
  


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