search and replace the whole line


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# 8  
OK,
try this one:

Code:
sed '1,/SOURCEFILE=\/usr\/platform\/sun4v\/driver\/file.cfg/s/4v/4x/' filename

P.S. Note that you may need to insert the whole pattern after the s command ...
ex:

Code:
sed '1,/SOURCEFILE=\/usr\/platform\/sun4v\/driver\/file.cfg/s/SOURCEFILE=\/usr\/platform\/sun4v\/driver\/file.cfg/SOURCEFILE=\/usr\/platform\/sun4x\/driver\/file.cfg/' filename


Last edited by radoulov; 09-25-2007 at 01:46 PM.. Reason: addition
# 9  
Hi,

Iam sorry but that one failed too. It replaced everywhere it found sun4v.
Is there anyway i could insert a comment ('#') in front of that line and append a new line with the new variable next to that line.

Like,

#SOURCEFILE=/usr/platform/sun4v/driver/file.cfg
SOURCEFILE=/usr/platform/sun4x/driver/file.cfg


Thanks for your help.
# 10  
Code:
nawk '{
	if(!(checked)&&($0~/SOURCEFILE=\/usr\/platform\/sun4v\/driver\/file.cfg/)){
		print "#"$0
		sub(/4v/,"4x")
		checked=1
		print 
	}else{
		print
		}
}' file

# 11  
Hi,

Iam sorry i didnt see ur edited message.
Here's the command i tried

sed '1,/SOURCEFILE=\/usr\/platform\/sun4v\/driver\/file.cfg/s/SOURCEFILE=\/usr\/platform\/sun4v\/driver\/file.cfg/SOURCEFILE=\/usr\/platform\/sun4x\/driver\/file.cfg/' test.cfg

It returns nothing , the file remains unchanged.
Also i tried the nawk script the file remains unchanged and it prints the whole file with no changes in it.

Thanks for your help.
# 12  
Hm,
may be there is an error in the pattern,
did you copy/paste-it in your post, or you modified it by hand?
Here is what I get:

Code:
$ uname -r
5.8
$ cat file
SUN4V_AVERAGE_MESSAGE_SIZE=128
SUN4V_MESSAGES_IN_INITIAL_RESPONSES=6500
SUN4V_ENFORCE_YIELD_NAMES=FALSE

Similar to the above lines there are lots of variable declarations with the variable SUN4V

#SOURCEFILE_LOCATION---------------------------

SOURCEFILE=/usr/platform/sun4v/driver/file.cfg
SOURCEFILE=/usr/platform/sun4v/driver/file.cfg
SUN4V_AVERAGE_MESSAGE_SIZE=128
SUN4V_MESSAGES_IN_INITIAL_RESPONSES=6500
SUN4V_ENFORCE_YIELD_NAMES=FALSE
$ nawk '{
if(!(checked)&&($0~/SOURCEFILE=\/usr\/platform\/sun4v\/driver\/file.cfg/)){
print "#"$0
sub(/4v/,"4x")
checked=1
print 
}else{
print
}
}' file
SUN4V_AVERAGE_MESSAGE_SIZE=128
SUN4V_MESSAGES_IN_INITIAL_RESPONSES=6500
SUN4V_ENFORCE_YIELD_NAMES=FALSE

Similar to the above lines there are lots of variable declarations with the variable SUN4V

#SOURCEFILE_LOCATION---------------------------

#SOURCEFILE=/usr/platform/sun4v/driver/file.cfg
SOURCEFILE=/usr/platform/sun4x/driver/file.cfg
SOURCEFILE=/usr/platform/sun4v/driver/file.cfg
SUN4V_AVERAGE_MESSAGE_SIZE=128
SUN4V_MESSAGES_IN_INITIAL_RESPONSES=6500
SUN4V_ENFORCE_YIELD_NAMES=FALSE


With sed:

Code:
$ sed '1,/SOURCEFILE=\/usr\/platform\/sun4v\/driver\/file.cfg/s/SOURCEFILE=\/usr\/platform\/sun4v\/driver\/file.cfg/SOURCEFILE=\/usr\/platform\/sun4x\/driver\/file.cfg/' file    
SUN4V_AVERAGE_MESSAGE_SIZE=128
SUN4V_MESSAGES_IN_INITIAL_RESPONSES=6500
SUN4V_ENFORCE_YIELD_NAMES=FALSE

Similar to the above lines there are lots of variable declarations with the variable SUN4V

#SOURCEFILE_LOCATION---------------------------

SOURCEFILE=/usr/platform/sun4x/driver/file.cfg
SOURCEFILE=/usr/platform/sun4v/driver/file.cfg
SUN4V_AVERAGE_MESSAGE_SIZE=128
SUN4V_MESSAGES_IN_INITIAL_RESPONSES=6500
SUN4V_ENFORCE_YIELD_NAMES=FALSE

# 13  
Quote:
Originally Posted by Jartan
[...]
It returns nothing , the file remains unchanged.
[...]
The file will remain unchanged anyway,
you'll get only modified output.
# 14  
Hi,

I get the same output now as you get, but i need to save the changes in the same file, so what can i do for that.

Thanks a lot for your help.
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