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A grep question

Posted on 2001-08-01
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Last Modified: 2010-04-21
I have a variable $MACHINE and I want to do an exact grep match for $MACHINE. How to do this when it's a variable?
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Question by:CyberGod
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5 Comments
 
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Accepted Solution

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zmanz earned 100 total points
ID: 6341438
I don't fully understand what you want.
If you mean to match a string $MACHINE you can do \$MACHINE
If you mean something else you may have to do ${MACHINE}
Or if you mean something else you just use that variable for
pattern instead of a string literal.

grep \$MACHINE filetolookin <cr>
grep stuff${MACHINE}otherstuff filetolookin <cr>
grep $MACHINE filetolookin <cr>

 
Again, I'm not sure what you want. I'm just making guesses.

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Author Comment

by:CyberGod
ID: 6341626
Here is an example of what my problem is:

I assign a value to my variable:
MACHINE=192.168.0.10

When I do this:
cat /etc/hosts | grep $MACHINE
it gives me every host that have .10* like
192.168.0.10
192.168.0.101
192.168.0.105 etc.
I want to match exactly the value that I've assigned.
0
 

Author Comment

by:CyberGod
ID: 6341631
Here is an example of what my problem is:

I assign a value to my variable:
MACHINE=192.168.0.10

When I do this:
cat /etc/hosts | grep $MACHINE
it gives me every host that have .10* like
192.168.0.10
192.168.0.101
192.168.0.105 etc.
I want to match exactly the value that I've assigned.
0
 

Author Comment

by:CyberGod
ID: 6341704
Here is an example of what my problem is:

I assign a value to my variable:
MACHINE=192.168.0.10

When I do this:
cat /etc/hosts | grep $MACHINE
it gives me every host that have .10* like
192.168.0.10
192.168.0.101
192.168.0.105 etc.
I want to match exactly the value that I've assigned.
0
 
LVL 1

Expert Comment

by:zmanz
ID: 6341808
Try:
 cat /etc/hosts | grep "${MACHINE}[^0-9]"
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