[luau] Changing shells

[Jon Reynolds]

Dusty, 
	Perfect! Thats exactly what I wanted to do just didn't know that the
#!/bin/sh designated which shell to execute the command with. It is
working perfectly now. Thanks a lot!

Jon

On Thu, 2002-07-11 at 19:45, Dustin Cross wrote:
> The first line of the script tells it what shell to use.
> 
> i.e.
> #!/bin/sh
> 
> or
> 
> #!/bin/bash
> 
> If /etc/rc.local has #!/bin/csh at the top then that is the shell it will
> use.  If your script needs something other, then make it it's own script
> and have /etc/rc.local call your script.
> 
> Dusty
> 
> 
> > OK, you guys always give me censory overload :) How about this instead,
> > I need to make the command that I put in /etc/rc.local to execute at
> > boot time. In csh it cannot but in sh it can, how do I make just this
> > one command execute at boot time under a different shell that wont give
> > me dreaded "ambiguous output" message? This is the offending command:
> > '/usr/local/bin/tcpserver -R -x/var/qmail.control/relays.cdb -u5001
> > -g5000 0 smtp /var/qmail/bin/qmail-smtpd 2>&1 | /var/qmail/bin/splogger
> > &' As you can see having to type this in everytime it reboots is
> > wearing on me quickly. I think what is causing my problem is the
> > pipe(|) but I'm no expert *nix type guy to figure out a solution.
> >
> > Jon
> >
> > -----Original Message-----
> > From: luau-admin at videl.ics.hawaii.edu
> > [mailto:luau-admin at videl.ics.hawaii.edu]On Behalf Of Carl Tucker
> > Sent: Thursday, July 11, 2002 6:04 PM
> > To: luau at videl.ics.hawaii.edu
> > Subject: Re: [luau] Changing shells
> >
> >
> > On Thu, Jul 11, 2002 at 05:56:18PM -0500, MonMotha wrote:
> >> Changing the default shell on unix (linux, bsd, commercial unixes,
> >> etc) generally means changing the link /bin/sh to whatever you want.
> >> In this case, /bin/sh is probably a symlink to /bin/csh.  To change to
> >> bash, link it to /bin/bash.
> >
> > Aagh!  No, don't do that.  /bin/sh must be a bourne-family shell,
> > preferably sh itself (for speed).  This is a POSIX mandated shell
> > that many programs and utilities depend on to work as expected.
> >
> > FreeBSD has csh as the default shell for root, and an additional
> > UID 0 account called toor.  The toor account is the one you should use
> > if you want to use a different shell than csh.  You can change it with
> > chsh(1) or vipw(8).
> >
> > Nothing prevents you from changing root's shell, of course, but
> > it can come back to bite you.  For instance, on my system, bash
> > is /usr/local/bin/bash.  What if my system crashes and I have to
> > boot single user with /usr unmounted.  Uh oh, no shell.
> >
> > Root's shell should be on the root partition, and be statically
> > linked - the other kicker.  If the shared libraries your shell
> > is linked against are in /usr/include, same problem if /usr
> > is unmounted.
> >
> > For more info, see /usr/share/doc/faq/index.html , section 7.12
> > and /usr/share/doc/handbook/index.html , section 3.7
> >
> > --
> > Carl Tucker
> > cft at panix.com
> > flestrin at worldnet.att.net
> > tuckercl at phnsy.navy.mil
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> 
> 
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