Grep problem

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# 1  
Old 09-29-2011
Question Grep problem

Hi Guys

i have a file with hundreds of lines like this
alerts.log2011-29:08/29/2011 12:47:56 XYZ_1234 ABSCTT  One Failed File Push To Remote Server Failed  ABC.DEF.1234
alerts.log2011-29:08/29/2011 12:47:56 XYZ_1234 ABSCTT  One Failed File Push To Remote Server Failed  WXYZ_ABC001

i want to take date and last column of file (till first special character) at a time.

expected output of command is:
08/29/2011 12:47:56  ABC
08/29/2011 12:47:56  WXYZ

Here i m facing 2 problems
1) when i cat this file and grep any one of these 2 i cant grep other in same command Smilie
2) In last column i want to pull the information only till first special character found which is not consistent in the file, its flooded with all kind of them. Smilie

Any help is greatly appreciated folks


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Last edited by Franklin52; 09-29-2011 at 03:54 AM.. Reason: Please use code tags, thank you
# 2  
Old 09-29-2011
If your grep supports -o you can do:

grep -o '[0-9][0-9]/[0-9][0-9]/[0-9]*[^_]*' infile

# 3  
Old 09-29-2011
yes grep -o is supported,

but catch here is, the last column can have any special character not only [^_] , it can have dot, hyphen, underscore or hash, how to catch all of them?
# 4  
Old 09-29-2011
How about using sed and match anything not A-Z or a-z:

sed -n "s#.*\($d2/$d2/$d2$d2 $d2:$d2:$d2\) "'.* \([a-zA-Z]*\)[^A-Za-z][^ ]*$#\1 \2#p' infile

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