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Get character position within variable

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# 1  
Old 07-29-2011
Get character position within variable
Hi all

let's say i have a file named 1234_v2_abcd
i need to find the position of the character located after _v, in above case this would be character number 2
the count of the characters before _v can change, but i always have a number after _v

can anybody help Smilie
Last edited by fpmurphy; 07-29-2011 at 07:13 PM.. Reason: 7 changed to 2
# 2  
Old 07-29-2011
Code:
echo 1234_v2_abcd | perl -lne 'print(index($_, "_v")+2)'

Or if +3 if you count position from 1.
This User Gave Thanks to yazu For This Post:
gigagigosu
# 3  
Old 07-29-2011
thank you! works perfect
# 4  
Old 07-29-2011
Code:
expr 1234_v2_abcd : '.*_v.'

This User Gave Thanks to binlib For This Post:
gigagigosu
# 5  
Old 08-02-2011
binlib,

thank you for your reply, your solution also works fine!
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