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Need help in extracting the substring in UNIX

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# 1  
Old 01-03-2013
Need help in extracting the substring in UNIX

Hi all,

I need to extract the "abcdef" from the below string Digital_abcdef_20130103.txt.gz

The length of the "abcdef" will be changing but it will be always after the word Digital_ and before the second underscore

help in this regard is highly appreciated
# 2  
Old 01-03-2013
Pls read forum rules carefully and use code tags as advised!
You don't mention your system (HW/OS), you don't specify where and how your string comes from - based on wild guessing, try:
$ echo Digital_abcdef_20130103.txt.gz|sed 's:^Digital_\(.*\)_.*$:\1:'

This User Gave Thanks to RudiC For This Post:
# 3  
Old 01-03-2013
 awk -F_ '/Digital/ {print $2}' infile

This sets filed separator to underscore _ and if Digital is found, print second field $2
# 4  
Old 01-03-2013
echo "${var2%%_*}"

Last edited by Scrutinizer; 01-03-2013 at 09:17 AM..

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