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Thank you, Your solution works, what if I need to put that in a shell script? grep -v "\<Swap" instruments.log | awk '{ idx=index($0, "MasterId="); masterId=substr($0, idx+length("MasterId=")+1); masterId=substr(masterId,1,index(masterId,"L")-3); print masterId; } ' | while read line; do grep "$line" rel.log done It is giving me syntax error: unexpected end of file

user14039
– user14039

2012-01-31 23:44:07 +00:00
Commented Jan 31, 2012 at 23:44
1

There's a simpler and faster way: use a multiline pattern.

Gilles 'SO- stop being evil'
– Gilles 'SO- stop being evil'

2012-02-01 00:09:20 +00:00
Commented Feb 1, 2012 at 0:09

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