please explain

[Deepak Oberoi]

Thanks very much paul
that was a big help!
but i still cant make any sense out of these ones..


48: if ! test -f /var/run/sm-client.pid ; then
49: echo -n $"Starting sm-client: "
50: touch /var/run/sm-client.pid
51: chown smmsp:smmsp /var/run/sm-client.pid
52: daemon --check sm-client /usr/sbin/sendmail -L
sm-msp-queue -Ac \
53: -q $SMQUEUE $SENDMAIL_OPTARG
54: RETVAL=$?
55: echo
56: [ $RETVAL -eq 0 ] && touch
/var/lock/subsys/sm-client
57: fi


58: return $RETVAL
59:}



--- Paul Howarth <paul at city-fan.org> wrote:

> Deepak Oberoi wrote:
> > can some one help me understand these few lines of
> > code please?
> > ::::::::::::
> > ::::::::::::
> > ::::::::::::
> > make all -C /etc/mail -s
> 
> Run "make" silently in directory /etc/mail (see "man
> make")
> 
> > 35: else
> > 36: for i in virtusertable access domaintable
> > mailertable ; do
> 
> For each of the files ( virtusertable access
> domaintable mailertable )
> 
> > 37: if [ -f /etc/mail/$i ] ; then
> 
> If the file exists in directory /etc/mail
> 
> > 38: makemap hash /etc/mail/$i < /etc/mail/$i
> 
> Use the makemap program (see "man makemap") to
> "compile" the text file into a 
> database format that sendmail can use directly.
> 
> > 39: fi
> > 40: done
> > 41: fi
> 
> End the if and loop constructs.
> 
> > 42: /usr/bin/newaliases > /dev/null 2>&1
> 
> Rebuild the aliases database from the text file.
> 
> > 43: daemon /usr/sbin/sendmail $([ "x$DAEMON" =
> xyes ]
> > && echo -bd) \
> 
> This initscript has previously included the file
> /etc/sysconfig/sendmail, 
> which may have set the DAEMON variable. If it did,
> start sendmail with 
> parameter "-bd" (have sendmail listen for incoming
> SMTP mail connections). 
> "daemon" is a function defined in
> /etc/rc.d/init.d/functions to start programs 
> nicely in the background.
> 
> > 44: $([ -n "$QUEUE" ] && echo -q$QUEUE)
> 
> If the QUEUE variable is set, add -q$QUEUE to the
> parameters used when 
> starting sendmail. Typically used to have sendmail
> process the mail queue 
> every 20 or 30 minutes.
> 
> > $SENDMAIL_OPTARG
> 
> Add any optional parameters required.
> 
> > 45: RETVAL=$?
> 
> Set the variable RETVAL to the exit status of the
> "daemon" command. If the 
> result is zero, all is well.
> 
> > 46: echo
> > 47: [ $RETVAL -eq 0 ] && touch
> > /var/lock/subsys/sendmail
> 
> If sendmail appears to have started properly, create
> an empty file 
> /var/lock/subsys/sendmail to indicate that sendmail
> is running.
> 
> Paul.
> 
> 
> -- 
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> 


=====
deepak oberoi


		
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