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comment a line of the patterns is a the beginning of the line

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# 1  
Old 08-27-2012
comment a line of the patterns is a the beginning of the line
I need to comment the lines starting with pattern "exclude" or "exclude=". If the work exclude comes at any other part, ignore it. Also, ignore, excludes, excluded etc. Ie only comment the line starting with exclude.

File contents.
Code:
exclude
exclude=
hi I am excluded
excludes
excludes=

Desired output

Code:
#exclude
#exclude=
hi I am excluded
excludes
excludes=

# 2  
Old 08-27-2012
Hi


Code:
$ awk -F= '$1 == "exclude"{printf "#";}1' file
#exclude
#exclude=
hi I am excluded
excludes
excludes=

Guru.
This User Gave Thanks to guruprasadpr For This Post:
anil510
# 3  
Old 08-27-2012
Works great Smilie
# 4  
Old 08-27-2012
You can also try
Code:
sed 's/^exclude/#/g' filename

Last edited by Franklin52; 08-27-2012 at 09:10 AM.. Reason: Please use code tags for data and code samples
# 5  
Old 08-27-2012
Quote:
Originally Posted by sathyaonnuix
You can also try


sed 's/^exclude/#/g' filename
That will not produce the output desired. Have you tried it?
# 6  
Old 08-27-2012
Ah how i read it incorrectly.. Hope this works..
Code:
sed 's/\(exclude\)/#\1/g;s/\(exclude=\)/#\1/g'

@Elixir: Am on my mobile.. couldn't try..
Last edited by Franklin52; 08-27-2012 at 09:10 AM.. Reason: code tags
# 7  
Old 08-27-2012
Quote:
Originally Posted by sathyaonnuix
Ah how i read it incorrectly.. Hope this works..

sed 's/\(exclude\)/#\1/g;s/\(exclude=\)/#\1/g'

@Elixir: Am on my mobile.. couldn't try..
That will not work either.
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