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Questions on GREP command

 
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# 8  
Old 12-25-2007
DeepakS,
Thanks for your reply but the command failed with the error below :

Code:
$ sed -n '/ERROR/ { N; N; /./p }' 20071225.log
sed: Function /ERROR/ { N; N; /./p } cannot be parsed.

Also, I would like to specifiy the number of lines to print as an integer type parameter.
Last edited by stevefox; 12-25-2007 at 03:45 AM..
# 9  
Old 12-25-2007
. .
# 10  
Old 12-25-2007
ghostdog74,
Thanks for your reply.
Your command is nearly perfect. It's returning everything except the line having the string "ERROR".

Code:
$ awk 'f&&f--; /ERROR/{f=2} ' 20071225.log
5678
8423
3456
3214

# 11  
Old 12-25-2007
Quote:
Originally Posted by stevefox
ghostdog74,
Thanks for your reply.
Your command is nearly perfect. It's returning everything except the line having the string "ERROR".

Code:
$ awk 'f&&f--; /ERROR/{f=2} ' 20071225.log
5678
8423
3456
3214

put a "print" statement inside the { } brackets
# 12  
Old 12-25-2007
Quote:
Originally Posted by stevefox
DeepakS,
Thanks for your reply but the command failed with the error below :

Code:
$ sed -n '/ERROR/ { N; N; /./p }' 20071225.log
sed: Function /ERROR/ { N; N; /./p } cannot be parsed.

Also, I would like to specifiy the number of lines to print as an integer type parameter.
That worked for me I assumed sed would behave the same.

Does this work:

Code:
sed -n "/ERROR/,+2p" foo

If not, you may be better off with awk or perl. Or you could build your own copy of GNU grep.
 
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