Vi(m)--insert a line beneath another in a text file globally

Hey Everyone,

I am using Vi(m) text editor. Version 7.0

What I'm trying to do is simple.

I have two unique lines in a text file with the word '$count++' on one line and '$count--' on the other line (it's a perl script).

I would like to paste the phrase 'system "clear";' (a perl function) beneath each line, throughout the entire document (globally).

It is 6,000 + lines of code!

How can I do this in a single command?

I'm comfortable with linux, vim and the shell, so whatever I have to do.

Thanks!

This can probably be done with sed.

Hi,

You could use the 'append' option with sed. I don't think it can be done with a single line but these 2 commands will do what you want:

sed '/\$count++/ a\
system \"clear\";' filename > output_file

and then:

sed '/\$count--/ a\
system \"clear\";' filename > output_file

Can somebody more clever than me fix the regexp so both can match in one line?

Andrew

Edit: Woo hooo!!! A few more careful moments seems to have produced a winner:

sed -e '/\$count++/ a\
system \"clear\";' \
-e '/\$count--/ a\
system \"clear\";' filename > output_file

I declare myself king of sed for 1 day :-).

According to Kernigan & Pike, "The Unix Programming Language", on page 326 in the appendix, the following should work.

1,$s/part1part2/part1\ part2/

the \/n addes a newline and should add your system call.

And for real fun, enter g/^/m0 this command will reverse all the lines in your 8000 line file.