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Change value in a file using perl or shell script

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# 1  
Old 12-13-2012
Change value in a file using perl or shell script
hi,

I have a local.conf file which has the first line

TOPDIR = "/home/mvdev/workspace/boxer". I want to replace the value to
"/home/common/workspace/mirror". I tried the following perl command that is

Code:
perl -p -i -e 's/Path/path1/g' myfile.txt

then

Code:
sed '/home/mvdev/workspace/boxer/c \> /home/common/workspace/mirror' local.conf

It did not work. Can you help.

Thnx

amvarma
# 2  
Old 12-13-2012
Code:
sed '1 s:/home/mvdev/workspace/boxer:/home/common/workspace/mirror:' local.conf

# 3  
Old 12-13-2012
Thanks Rudic,

when I ran the command, it displayed that it changed, but when I open it separately I dont see the value updated.
# 4  
Old 12-13-2012
You need to send the result to some other file like

Code:
sed '1 s:/home/mvdev/workspace/boxer:/home/common/workspace/mirror:' local.conf > local1.conf

and then move it back to local.conf

Code:
mv local1.conf local.conf

# 5  
Old 12-13-2012
Yes, as Vikram says, redirect the output to a file and then rename, unless your sed has the -i option (edit in place). BUT - I'd rather be careful editing system files in place. Better check result in time.
# 6  
Old 12-13-2012
if we use -i option, will it avoid the rename opion
# 7  
Old 12-13-2012
Hi

Use your perl command like this:

Code:
$ p1="/home/mvdev/workspace/boxer"
$ p2="p2="/home/common/workspace/mirror"
$ perl -i -pne "s|$p1|$p2|;" file

Guru.
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