Basic commands?

[asian_al]

Using terminal, how would you find the source code of the cd command? I didn't think you could....

Is there any way to add a new service system to and set it up to start up only if the system is in run level two or five? I believe you can somewhere in the service config GUI?

[Simian Man]

Originally Posted by asian_al

Using terminal, how would you find the source code of the cd command? I didn't think you could....

The cd command is actually built into the shell, there is no "cd" binary program as there is for ls and almost all others. TO find the source of cd, you'd have to look in the source of bash itself (or another shell).

As to your other question, I have no idea.

[scottro]

You mean, for example, have the cups service only start if you boot into runlevel 2 and 5? Sure, take a look at the man page for chkconfig

man chkconfig

See if that makes it clear, if not, post again.

[Gödel]

Bash source for cd:

$ yumdownloader --source bash
$ rpm -ihv bash-4.0-8.fc11.src.rpm 
$ sudo yum-builddep bash-4.0-8.fc11.src.rpm 
$ rpmbuild -bp ~/rpmbuild/SPECS/bash.spec 
$ vi ~/rpmbuild/BUILD/bash-4.0/builtins/cd.def

chkconfig or system-config-services gui enable/disable services at required runlevels. You can create your own service, eg http://forums.fedoraforum.org/showthread.php?t=220213