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Shell Programming and Scripting

find a pattern and replace

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# 1  
Old 08-02-2010
find a pattern and replace
i have a file which contains lines like this.
Code:
intsrcrpttrn1099mctrl:export GRAPHPARM_AR[1]="-input_code M302023"
intsrcrpttrn1099mload:export GRAPHPARM_AR[1]="-input_code M192023"
intsrcrpttrn1099mload:export GRAPHPARM_AR[1]="-input_code P192023"

the value after -input_code starts with some alphabet followed by numeric.i want to check if the alphabet is M then it will be replaced by m.else it will be as it is.

so output will be
Code:
intsrcrpttrn1099mctrl:export GRAPHPARM_AR[1]="-input_code m302023"
intsrcrpttrn1099mload:export GRAPHPARM_AR[1]="-input_code m192023"
intsrcrpttrn1099mload:export GRAPHPARM_AR[1]="-input_code P192023"

Moderator's Comments:
Mod Comment Having 98 posts you should be aware of using code tags.
Last edited by zaxxon; 08-02-2010 at 09:07 AM..
# 2  
Old 08-02-2010
Hi,

Use code tag.
Try this,

Code:
perl -lne '$_=~s/(.+?)=(\".+?\s)M(\d+)/$1=$2m$3/g; {print $_}' inputfile

# 3  
Old 08-02-2010
Here is the code -

Code:
awk -F ' ' '$3 ~ /^M.+/ { gsub( "M", "m", $3); print; }'  <file name>

Last edited by Scott; 08-02-2010 at 09:00 AM.. Reason: Please use code tags
# 4  
Old 08-02-2010
untested
Code:
sed 's/-input_code M/-input_code m/' file

# 5  
Old 08-02-2010
thanks a ton...
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