Help needed for sed command.

pinga123 · 11-05-2009, 06:00 AM

I want to execute below command using line number as a variable.

Code:

sed '5c\ disk = jskdjfdsk' vm.cfg

How do i substitute a variable in place of 5
for example
i tried substituting

Code:

sed '$variablec\ disk = jskdjfdsk' vm.cfg
and 
sed '"$variable"c\ disk = jskdjfdsk' vm.cfg

but they didnt worked .
Please help

pixellany · 11-05-2009, 06:38 AM

Code:

sed "$variable c\ disk = jskdjfdsk" vm.cfg

The space after "variable" is required---so that it does not try to evaluate the value of "variablec"

bsat · 11-06-2009, 01:57 AM

do not put variables in single quotes, the dollar looses its special meaning in it, use the double quotes, and as pixellany said use the space after the variable.