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I have a problem producing filtering out hanzoMollusc (2)from my grep.

https://node.hanzo.com/production/application/ (1) 

https://node.hanzoMollusc.com/Messaging/Receiver (2)

My grep command is this for (2) which is working just fine.

/usr/xpg4/bin/grep -E 'node.hanzoMollusc.*Exception' diag* | grep -c 2013-03-28

Problem is if I wanted to search for (1) I need to modify the grep command a bit and use -F where its stated in the manual

"Matches using fixed strings. Treats  each pattern  specified as a string instead of a regular expression"

This is what I have come up so far... which is not working....

/usr/xpg4/bin/grep -F 'https://node.hanzo.com/application/*Exception' diag* | grep -c 2013-03-28

My problem lies in the domain part which is node.hanzo and node.hanzoMollusc that is why I didn't use -E on (1). Can anyone help me to fix this.


I was able to get what I want exactly with a few tweaks from Gilles example. Actually he was right I tried reading my question and it wasn't clear. My problem boils is this.

I have a problem filtering this


everytime I use this command:

/usr/xpg4/bin/grep -E 'node.hanzoMollusc.*Exception' diag* | grep 2013-03-28

because it also shows up both node.hanzo and node.hanzoMollusc on the results.

I tweaked Gilles example and I was able to get the result right

/usr/xpg4/bin/grep -E '(https://node.hanzo.com/production/application)[/ ].*Exception' diag*

Thanks alot Gilles.

share|improve this question
Have you an example output you want to filter ? – GHugo Mar 28 '13 at 7:59
grep -F will look for an actual asterisk character where you have a "*" in the search string. – Johan Mar 28 '13 at 10:10
up vote 2 down vote accepted

It's not clear what you want to match: your examples are contradictory.

grep -F matches an exact string. If you put a * in the argument, it only matches a * character in the file.

If you want to allow matching several strings, use -E and the | operator. For example, the following command matches lines containing https://node.hanzo.com/production/application/somepath Exception Foo or https://node.hanzoMollusc.com/Messaging/Receiver/somepath Exception Foo (where the /somepath part is variable and can be omitted).

grep -E '(https://node.hanzo.com/production/application|node.hanzoMollusc.com/Messaging/Receiver)[/ ].*Exception' diag*
share|improve this answer
Sorry for the late comment, thanks alot for your help! – dimas Apr 5 '13 at 1:10

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