Grep -F for special character


 
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# 8  
Old 12-13-2013
initially i tried with this approach with string value as CASH$$

Code:
a='CASH$$'
/usr/xpg4/bin/grep "EXEC *$a" file

Then this is not working... it is tying to replace $$as pid.

Is there any way to do this..I tried a lot of ways..nothing is working.

Last edited by millan; 12-13-2013 at 12:57 PM..
# 9  
Old 12-13-2013
Quote:
Originally Posted by millan
initially i tried with this approach with string value as CASH$$

Assuming you do need to use a regular expression:
Code:
a='CASH$$'
/usr/xpg4/bin/grep "EXEC *$a" file

After the double quoted expansion, the first grep argument will be EXEC *CASH$$. In the basic regular expression grammar, that first dollar sign will be treated as a literal dollar sign, but the second will be interpreted as an end of line anchor.

You've done a very poor job of specifying your problem.

You initially posed a question which does not accurately reflect the actual situation (omitting the EXEC *). Attempts to proactively simplify the matter usually complicate the troubleshooting process (often because the person doing the simplifying cannot identify what is and is not relevant). It is always preferable to provide too much information rather than too little.

Eights posts into this thread and we still do not know if you are trying to match a space followed by an asterisk (in which case you can use -F) or any sequence of consecutive spaces (in which case you MUST NOT use -F). Which is it?

Show us some input data and show us the desired output. Tell us which OS and shell you're using as well. After nearly 5 years of membership and over 100 posts, you should know better.

Regards,
Alister

Last edited by alister; 12-13-2013 at 01:20 PM..
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