The sed Class Script

The sed class provides a method to modify an existing object on the target system. The sed class action script executes automatically at installation if a file that belongs to class sed exists. The name of the sed class action script should be the same as the name of the file on which the instructions are executed.

A sed class action script delivers sed instructions in the following format:

Two commands indicate when instructions should be executed. The sed instructions that follow the !install command are executed during package installation. The sed instructions that follow the !remove command are executed during package removal. The order in which these commands are used in the file does not matter.

For more information on sed instructions, see the sed(1) man page. For examples of sed class action scripts, see Chapter 5, Case Studies of Package Creation.