Programming and posix - April 2002

April 3, 2002
Solution Symposium
Page 66
hp e3000
programming
and posix
diff and patch commands
• diff - compares two files and reports on differences
• -r option recursively compares two directory trees
• -u option on GNU diff for making open-source
patches
• patch - modifies files using diff output
• can modify entire directory trees
• saves rejected diff code in *.rej files
• use GNU patch to handle diff -u format