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Extraction of numbers from input

 
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# 1  
Old 07-29-2011
Extraction of numbers from input
I have the following input:

xxxx-2.7.19_WR3

I have extract the following:

2.7.19

Can anyone suggest an awk or sed command to do the above...Smilie


another condition is
if the input is :

xxx-xxx_xxx-1.4-1_WR3.0bg.armv6jel_vfp

it shud still extract : 1.4-1

whenever "-" is followed by numbers, it should be extracted till "_WR3"
# 2  
Old 07-29-2011
can you give us real sample input (rather than xxxx charachers) ?
# 3  
Old 07-29-2011
input: python-2.5.1-26_WR3.0bg.armv6jel_vfp

expected output: 2.5.1-26


input: activemq-cpp-library-3.0.1-1_WR3.0bg.armv6jel_vfp


expected output: 3.0.1-1
# 4  
Old 07-29-2011
Its not optimum code i know but try this mate:

Code:
echo "python-2.5.1-26_WR3.0bg.armv6jel_vfp" |
sed 's#\([A-Za-z]*\)-\([0-9]\.[0-9]\.[0-9]-[0-9][0-9]*\)_\([A-Za-z]*\)#\2#'

regards
Last edited by EAGL€; 07-29-2011 at 04:06 AM.. Reason: syntax
# 5  
Old 07-29-2011
Try:
Code:
sed '/^[^0-9]*\([0-9][0-9.-]*\).*$/ s//\1/'

This User Gave Thanks to yazu For This Post:
xerox
# 6  
Old 07-29-2011
Or try..
Code:
echo 'python-2.5.1-26_WR3.0bg.armv6jel_vfp'| sed 's/^[^0-9]*-\([0-9][^_]*\)_.*/\1/'
echo 'activemq-cpp-library-3.0.1-1_WR3.0bg.armv6jel_vfp' | sed 's/^[^0-9]*-\([0-9][^_]*\)_.*/\1/'

This User Gave Thanks to michaelrozar17 For This Post:
xerox
# 7  
Old 07-29-2011
Quote:
Originally Posted by michaelrozar17
Or try..
Code:
echo 'python-2.5.1-26_WR3.0bg.armv6jel_vfp'| sed 's/^[^0-9]*-\([0-9][^_]*\)_.*/\1/'
echo 'activemq-cpp-library-3.0.1-1_WR3.0bg.armv6jel_vfp' | sed 's/^[^0-9]*-\([0-9][^_]*\)_.*/\1/'

What does the underscore do in this part of code can you explain Michael?
Code:
\([0-9][^_]*\)

thanks in advance
 
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