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Grep a sub-string from a string stored in a variable.

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# 1  
Old 07-04-2019
Grep a sub-string from a string stored in a variable.
For example: I am grepping "Hello" from a file and there are 10 matches. So all ten lines with match will get stored into a variable($match). Now I want to ignore those lines which have "Hi" present in that.

Currently I tried this:
Code:
match = grep "Hello" file | grep -v "Hi" file

But that's not working properly
Last edited by Scrutinizer; 07-04-2019 at 07:51 AM..
# 2  
Old 07-04-2019
Hi try command substitution ( $( ... ) ):
Code:
match=$(grep "Hello" file | grep -v "Hi")

This User Gave Thanks to Scrutinizer For This Post:
pavan
# 3  
Old 07-04-2019
Hello pavan,

If you are ok with awk then you could try following too once.

Code:
match=$(awk '/Hello/ && !/Hi/'  Input_file)

Thanks,
R. Singh
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