bill lam <[EMAIL PROTECTED]> asked: > Suppose I want to change 2 lines to 3 line in files as follow > using perl -p -i -e command aa bb > > aa > cc > bb > > this doesn't work > perl -p -i -e "s/aa\nbb/aa\ncc\nbb/g;" foo.txt
That won't work since you ever only see a single line of input. Since you don't insert new data into the first line of the match, you could keep track of the previous line in $p and then use two matches against $p and $_ to determine if you have the line pair that you want to match. perl -i -ple '$_ = "cc\n$_" if $p =~ m/aa/ && m/bb/; $p=$_' HTH, Thomas -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] http://learn.perl.org/
