Re: [COMP] Startup Programs in Linux
- From: John Madden <weez@xxxxxxxxxxxxxx>
- To: computers@xxxxxxxxxxxxxx
- Date: Mon, 13 Dec 1999 20:53:14 -0500
> When I start Linux, a whole bunch of programs get started that I don't ever
> user like pcmcia and sendmail. What file do I edit to change what gets
> started and what doesn't at bootup?
What distribution are you using? (Redhat, if I remember right...)
I'm sorry to say that if you're running redhat (just learned this today,
actually), that things are a bit sticky. If you wanna get some elbow grease
goin', have a look in /etc/rc.d. That directory contains everything that runs
during startup and shutdown, including your different init levels. Redhat,
unfortunately, seems to have some non-standard stuff in there, but it really
shouldn't be too bad to figure out. If you're not in the script-editing mood,
try using linuxconf, a big gui-based configuration program. I highly
recommend doing it by hand though. Linux: Learning is better than simply
doing.
I'm not sure how much Redhat sways from the norm, but on Slackware (a
recommended 'upgrade' =) ), /etc/rc.d/rc.M starts sendmail, and rc.S calls
rc.pcmcia, which does the actual pcmcia stuff.
Just for kicks, here's a quick run-down of an rc.d directory:
rc.0 : symlink to rc.6, which is run to reboot. Technically, runlevel 0 is
system halt (shutdown), runlevel 6 is reboot. Runlevels are controlled from
/etc/inittab.
rc.4 : runs for runlevel 4, or the X-only mode, where xdm/kdm/gdm come up at
boot, rather than the console.
rc.6 : explained above.
rc.K : runs for runlevel 1, or single-user mode. Basically just kills off
all procs.
rc.M : prepares the system for runlevels 4 and 6
rc.S : general system startup script
rc.inet1 : sets up your network card. This one's strange on Redhat.
rc.inet2 : starts up your network services (sendmail generally isn't
included here)
rc.local : a place to throw anything you want to run at startup.
rc.modules : loads your kernel modules
That's pretty much it on a slackware system. The others are self-explanatory.
HTH
John
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