/Search and replace/ Text matching the pattern OLD-TEXT is replaced by NEW-TEXT in each FILE. The pattern may match multiple lines. Filenames may include glob patterns (these must be quoted to avoid being interpreted by the shell), and in particular may use ‘**’ to match all files and zero or more directories and subdirectories. Tilde and environment variable expansion is also performed. [examples] Replace all occurrences of the word ‘F’ with ‘A’ in all files with extension .txt under the grades/ directory:

    rpl -w F A 'grades/**/*.txt'
[>copyright]

This program was written for Debian as a free replacement for the non-free
rpl
program by Joe Laffey.
[see also]
find(1),
sed(1).
[author]
Written by Göran Weinholt and Reuben Thomas.