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Help to change value from a file.

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Top Forums Shell Programming and Scripting Help to change value from a file.
# 1  
Old 03-06-2006
Help to change value from a file.
How can I change the value of "INI_TEST" from "YES" to "NO" in the setup.ini file by command?

[galaxy@test01 test]$ cat setup.ini
INI_START YES
INI_END YES
INI_TEST YES

Thank u in advance!
# 2  
Old 03-07-2006
If it just one occurrence, then manual changing to NO will help.

Else,
Code:
sed -e 's/\(INI_TEST\) YES/\1 NO/g' setup.ini > setup.ini.new

Of if you have a -i option for your sed,
Code:
sed -i -e 's/\(INI_TEST\) YES/\1 NO/g' setup.ini

# 3  
Old 03-07-2006
Code:
sed 's/INI_TEST YES/INI_TEST NO/g' text > text
#substitute INI_TEST YES with INI_TEST NO and overwrite the original file

the above command will fail. it seems that the original file will become empty. Can someone explain?
# 4  
Old 03-07-2006
Quote:
Originally Posted by new2ss
Code:
sed 's/INI_TEST YES/INI_TEST NO/g' text > text
#substitute INI_TEST YES with INI_TEST NO and overwrite the original file

the above command will fail. it seems that the original file will become empty. Can someone explain?
Redirect the output to some other file and then rename it later. Else the read-write operations are being carried out on a single file.
Like I mentioned before, if you have a -i option for your sed, use that for operations like read and write on a single file.
# 5  
Old 03-07-2006
Thanks vino!
# 6  
Old 03-07-2006
It seems that I can't change the value straightly ......
Is there any method to change the value straightly? ( not use sed )
# 7  
Old 03-07-2006
Quote:
Originally Posted by GCTEII
It seems that I can't change the value straightly ......
Is there any method to change the value straightly? ( not use sed )
Why cant you change the value manually ? What is it that you are trying and what is the error that you are facing ? Check the permissions et al..

I think it should be as simple as opening the file in your favourite editor and changing the value.
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