history

The history concept provides the user with the capability of calling and editing previously used commands, modifying others, listing the last commands used, and so on. Here are some of the commands using the C Shell history concept:

• !!: recall the last command and execute it.
• !num where num is a number: recall and execute command number num.
• ^ str1^ str2^ : change str1 into str2 and execute command. The change is done on the last command.
• !num:s/str1/str2/: change str1 into str2 in command num.
• history recalls last commands used.

If the user prompt does not include the history number, change the prompt variable in the .cshrc file to include the history number of the command by adding an exclamation mark in the definition as in

set prompt = "! cantin>"