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Extract a part of variable/line content in a file

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# 1  
Old 11-17-2015
Extract a part of variable/line content in a file
I have a variable and assigned the following values
***XYZ_201519_20150929140642_20150929140644_211_0_0_211

I need to read this variable from backward and stop read when I get first underscore (_)

In this scenario I should get 211

Thanks
Kris
# 2  
Old 11-17-2015
Please use code tags as required by forum rules!


bash? Try
Code:
echo ${var##*_}
211

# 3  
Old 11-18-2015
Quote:
Originally Posted by mkris
I have a variable and assigned the following values
***XYZ_201519_20150929140642_20150929140644_211_0_0_211
I need to read this variable from backward and stop read when I get first underscore (_)
In this scenario I should get 211
Thanks
Kris
Hello Kris,

You could try following too.
Code:
echo "***XYZ_201519_20150929140642_20150929140644_211_0_0_211" | awk -F"_" '{print $NF}'

Output will be as follows.
Code:
211

In case you need to read from a Input_file then following may help.
Code:
cat Input_file
***XYZ_201519_20150929140642_20150929140644_211_0_0_211

awk -F"_" '{print $NF}' Input_file

Thanks,
R. Singh
# 4  
Old 11-19-2015
grep

Code:
echo ***XYZ_201519_20150929140642_20150929140644_211_0_0_211 | grep -o "[^_]\+\$"

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