search and replace the whole line


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# 15  
OK,
use this:

Code:
cp your_file your_file.orig

nawk '{
	if(!(checked)&&($0~/SOURCEFILE=\/usr\/platform\/sun4v\/driver\/file.cfg/)){
		print "#"$0
		sub(/4v/,"4x")
		checked=1
		print 
	}else{
		print
		}
}' your_file>new_file

mv new_file your_file

# 16  
Great, that worked like a champ.

I have one last doubt. Suppose if i have a '*' symbol in the path like

SOURCEFILE=/usr/platform/sun4v*/driver/file.cfg


how should i give any escape character to include* too, so that i can replace sun4v* with sun4x.

Thanks again.
# 17  
Like this:

Code:
cp your_file your_file.orig

nawk '{
	if(!(checked)&&($0~/SOURCEFILE=\/usr\/platform\/sun4v[*]\/driver\/file.cfg/)){
		print "#"$0
		sub(/4v[*]/,"4x")
		checked=1
		print 
	}else{
		print
		}
}' your_file>new_file

mv new_file your_file

For example:


Code:
$ 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

# 18  
No Problem, I figured it out.

Thanks a lot for your help.
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