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Full Discussion: Sed Help in Updating something only in one particular file.
Top Forums Shell Programming and Scripting Sed Help in Updating something only in one particular file. Post 302178007 by bisla.yogender on Monday 24th of March 2008 09:20:33 AM
Old 03-24-2008
Error Sed Help in Updating something only in one particular line.
Hi,

The scenerio is that I want to replace a text in one particular line of a file. But when I am using the sed it's replacing all the occurences of that text.

Like the file is:

>cat test
DNGGF10 :None :Test
DNGGF11 :ABC :Test1
DNGGF12 :None :Test2
DNGGF13 :None : Test3

I have written the following code for this:-
>cat script
name=$1

sed "s/`grep DNGGF10 test|cut -d ':' -f2`/$1/" test >test.chk


But while executing the code as ./script yogi then I am getting O/p in test.chk as:

>cat test.chk
DNGGF10 :Yogi:Test
DNGGF11 :ABC :Test1
DNGGF12 :yogi:Test2
DNGGF13 :Yogi: Test3

But i want to replce second field only for that line which contains DNGGF1O i.e the 1st line.Also space total sapce in second field should also not get altered.

Kindly shed some light on it.

Thanks-
Yogi
Last edited by bisla.yogender; 03-24-2008 at 10:27 AM..
 

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LEARN ABOUT OSX

set_color

set_color(1)							       fish							      set_color(1)

NAME

       set_color - set_color - set the terminal color

set_color - set the terminal color
   Synopsis
       set_color [-v --version] [-h --help] [-b --background COLOR] [COLOR]

   Description
       Change the foreground and/or background color of the terminal. COLOR is one of black, red, green, brown, yellow, blue, magenta, purple,
       cyan, white and normal.

       o -b, --background Set the background color

       o -c, --print-colors Prints a list of all valid color names

       o -h, --help Display help message and exit

       o -o, --bold Set bold or extra bright mode

       o -u, --underline Set underlined mode

       o -v, --version Display version and exit

       Calling set_color normal will set the terminal color to whatever is the default color of the terminal.

       Some terminals use the --bold escape sequence to switch to a brighter color set. On such terminals, set_color white will result in a grey
       font color, while set_color --bold white will result in a white font color.

       Not all terminal emulators support all these features. This is not a bug in set_color but a missing feature in the terminal emulator.

       set_color uses the terminfo database to look up how to change terminal colors on whatever terminal is in use. Some systems have old and
       incomplete terminfo databases, and may lack color information for terminals that support it. Download and install the latest version of
       ncurses and recompile fish against it in order to fix this issue.

Version 1.23.1							  Sun Jan 8 2012						      set_color(1)
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