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Edit a config file using shell script

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# 1  
Old 04-30-2008
Edit a config file using shell script
I need to edit a config file using shell script. i.e., Search with the 'key' string and edit the 'value'.

For eg: below is what I have in the config file "configfile.cfg".

Key1=OldValue1
Key2=OldValue2

I want to search for "Key1" and change "OldValue1" to "NewValue1"

Thanks for your help.
# 2  
Old 04-30-2008
If you want to replace one key in one file you can do it with vi or is this homework?

Regards
# 3  
Old 04-30-2008
I want to do it in around 100 files - using shell script or a command. Not manually.
# 4  
Old 04-30-2008
hope this hepls you

sed -e 's/\(key1\=\)\(Old\)\(value1\)/\1New\2/g' filename

please iterate this in you shell programs for the key1 values and old value for each file.
# 5  
Old 04-30-2008
Edit: had that tab open for a while - chappidi_pradee gave a better solution
# 6  
Old 05-01-2008
Quote:
Originally Posted by chappidi_pradee
hope this hepls you

sed -e 's/\(key1\=\)\(Old\)\(value1\)/\1New\2/g' filename

please iterate this in you shell programs for the key1 values and old value for each file.
Thanks pradee.

Will this work for the below cases?

#This is a comment. YesNoFlag = No means it will not print
YesNoFlag = No

And I need to change No to Yes
# 7  
Old 05-01-2008
i think the script that i posted will not work for the example that you mentioend becasue there should not be any spaces between the equal to sign (=).
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