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How to check "if matches" statement for a string in shell script in UNIX?

Posted on 2011-09-28
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Last Modified: 2012-05-12
Hi,
I have an application running on Unix. I want to write a shell script that will detect whether I am on test machine or not.

The test machine name includes the word test in it. (i.e. myapplicationtest-00-abc)

The production machine does not include it. (i.e. myapplication-00-abc)

So depending on the machine type, I want to assign the value test to a variable. Then I will use this variable in my following commands.

Sudo code
$machineName = uname -n;
 
if ($machineName includes 'test')
{
$var=test
}
else{
$var=''
}

rsync -avz --delete /opt/mydir1/mydir2 root@myapplication$var-00-abc:/opt/mydir1/mydir2

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Question by:Tolgar
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5 Comments
 
LVL 9

Expert Comment

by:jeremycrussell
ID: 36718409
What shell?

This would work for most.
if [ `uname -n` | grep 'test'` ]
  then
    var=test
else
    var=
fi

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LVL 9

Expert Comment

by:jeremycrussell
ID: 36718420
Sorry, there's a typo...

Should be:


if [ `uname -n | grep 'test'` ]
  then
    var=test
else
    var=
fi
0
 

Author Comment

by:Tolgar
ID: 36718491
I use tcsh. Do this code apply for it?

And what is fi at the end?

Thanks,
0
 

Author Comment

by:Tolgar
ID: 36718540
It says expression syntax for if statement.
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Accepted Solution

by:
jeremycrussell earned 2000 total points
ID: 36718871
the 'fi' is closing the if-then-else statement, this syntax works for the Bourne and Korn shells..

For tcsh or csh, use something like


#!/bin/tcsh

set u = `uname -a | grep test`
if ("$?") then
 set var = ""
else
 set var = "test"
endif

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