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How to extract a string in unix

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Name: ch Bushu
Date: May 7, 2009 at 02:47:17 Pacific
OS: Unix
Subcategory: General
Comment:

Hi,

Can any one tell me how to extract a between the brackets?

My scenario is I have three line like:
Queue(FirstQueuename)
Queue(SecondQueuename)
Queue(ThirdQueuename)

I want all the queue names to be displayed as below:

FirstQueuename
SecondQueuename
ThirdQueuename



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Response Number 1
Name: lankrypt0
Date: May 7, 2009 at 05:22:18 Pacific
Reply:

you can use:
sed -e "s/.*(//g" -e "s/).*//g" < filename

That removes everything before ( and after )


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Response Number 2
Name: ch Bushu
Date: May 7, 2009 at 06:16:20 Pacific
Reply:

It worked :)

Thanks a lot..Can you please tell what that command does?

How "s/.*(//g" -e "s/).*//g" seperated the string?

Thanks again...


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Response Number 3
Name: ch Bushu
Date: May 7, 2009 at 06:42:22 Pacific
Reply:

It worked :)

Thanks a lot..Can you please tell what that command does?

How "s/.*(//g" -e "s/).*//g" seperated the string?

Thanks again...


0

Response Number 4
Name: ghostdog
Date: May 7, 2009 at 07:36:01 Pacific
Reply: 

 # awk 'BEGIN{FS="[(]|[)]"}{print $(NF-1)}' file
FirstQueuename
SecondQueuename
ThirdQueuename


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Response Number 5
Name: lankrypt0
Date: May 7, 2009 at 11:45:01 Pacific
Reply:

Sure with that statement, you actually have two replacements

the first:
s/.*(//g -- [the important part is the .*(]
matches and deletes everything from the beginning of the line up to and including the (

The second:
s/).*//g -- [the important part is the ).*]
matches and deletes everything from and including the ) to the end of the line. which leaves the stuff in the middle.


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Response Number 6
Name: nails
Date: May 7, 2009 at 21:26:44 Pacific
Reply:

Unfortunately, only the GNU awk supports multiple field seperators.

While the GNU awk and sed solutions are definitely the most elegant and probably the most efficient, The unix cut command can also solve this problem:

cut -d'(' -f2 < datafile | cut -d')' -f1



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Response Number 7
Name: ghostdog
Date: May 7, 2009 at 21:32:30 Pacific
Reply:

if one doesn't have GNU awk,

awk  'BEGIN{FS="[(]"}{sub(/\)$/,"",$NF);print $NF}' file


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