In This chapter:
Using Built-In Filename Completion
Syntax of the complete Command
Displaying and Removing Programmed Completions
When Programmed Completions Do Not Apply
The shell can do some typing for you, by performing filename completion. You type a filename prefix, hit a special key, and the shell supplies the rest of the filename.
csh and tcsh both have built-in filename completion. tcsh has command-name completion as well, and allows you to program your own types of completion on a per-command basis (when the built in completion facilities don't perform as needed). For example, you can tell tcsh to complete an argument to mail as a username rather than as a filename, or to complete arguments to cd using only directory names.
In tcsh, filename completion is always active: just type the first part of a name and hit the
TAB key. tcsh determines which name matches the prefix, and types out the rest for you. If you have a file named experiment.data, you can type its name quickly, like this:
more exType the prefix
ex, then hit
TAB% more experiment.data Shell types rest of name
In csh, you hit
ESC rather than
TAB after typing the prefix. Also, filename completion isn't active unless you ...