[SOLVED] replacing characters only within a string of length 30 in multiple files

kdo · 03-03-2014, 08:49 AM

Dear Grail,
I tried your code
sed -r '/^[[:space:]]*[01]{30}$/{s/0/a/g;s/1/c/g}' file, but this does not
change anything in the file.

grail · 03-03-2014, 09:47 AM

I would suggest you re-read my post and pay particular attention to what I told you that you needed to add if you wish to change the file.

hmmm ... after re-reading it myself it is perhaps unclear

By adding the -i option to the sed line it will make changes to the file, man sed for more