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Shell Programming and Scripting

Regular Expression problem

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# 8  
Old 10-07-2010
Avoids missing ">" on 2nd line and extra ">" at end:
Code:
$ awk '{ if(NR>1&&$0!~"^miR"&&p!~"^miR")print p; p=$0}' infile

>sample1:1:1:1057:7503#0 0 0
>sample1:1:1:1057:12664#0 0 0
>sample1:1:1:1059:6357#0 0 0
>sample1:1:1:1059:10418#0 0 0
>sample1:1:1:1060:11510#0 0 0
>sample1:1:1:1060:5177#0 0 0
>sample1:1:1:1061:8105#0 0 0
>sample1:1:1:1063:6105#0 0 0
>sample1:1:1:1064:11266#0 0 0
>sample1:1:1:1066:5654#0 0 0

Last edited by Chubler_XL; 10-07-2010 at 09:22 PM.. Reason: typo
This User Gave Thanks to Chubler_XL For This Post:
hravisankar
# 9  
Old 10-07-2010
I'll opt for
Code:
awk 'BEGIN{FS=RS;RS=ORS=">"} !/miR/' file

This User Gave Thanks to danmero For This Post:
hravisankar
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