Replacing text on specific lines with sed or awk?

Lantzvillian · 10-16-2007, 11:08 AM

Hey there,
I am looking for the command syntax to do the following.
On lines one and five replace x with y? Now I know sed could do something like that, but how is the question?

thanks,

Ronnie

colucix · 10-16-2007, 11:17 AM

A method with sed:

Code:

sed 's/x/y/;n;n;n;n;s/x/y/'

n reads next line.

colucix · 10-16-2007, 11:26 AM

And a method with awk

Code:

gawk 'NR==5||NR==1{sub("x","y")}{print}'

Lantzvillian · 10-16-2007, 11:41 AM

thanks gordie,
do you apply it to the text file exampletxt? gawk 'NR==5||NR==1{sub("x","y")}{print}' >exampletext

Lantzvillian · 10-16-2007, 11:54 AM

gotter thanks everyone

juergen · 10-17-2007, 09:00 AM

Another sed approach:

Code:

sed '1,5s/x/y/'