I'm running Ubuntu 10.10 with openbox running on top. I noticed today a command called
caller, however there is no man page, it does not respond to any input (or --help) and whereis doesn't find it.
Any idea what it is?
and you will see it is a shell built-in. Running
will show its function, reported as well in bash's manual page. Briefly
It's a shell builtin command: