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Thread: Print row if value in column 1 is the first occurence
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Old 03-17-2008
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radoulov radoulov is offline Forum Staff  
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Join Date: Jan 2007
Location: Варна, България / Milano, Italia
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Like a FAQ
Awk:

Code:
awk '!x[$1]++' file
Use nawk or /usr/xpg4/bin/awk on Solaris.

Perl:

Code:
perl -ane'print unless $x{$F[0]}++' file