Please explain this

appsdba.nitin · #1 (**permalink**) 09-24-2008

if [ $# != 3 ]
then
echo "Syntax: $0 <sid> <COLD/HOT> <DEST>"
exit
fi

if [ $# != 3 ]--------------what does this mean???
echo "Syntax: $0 <sid> <COLD/HOT> <DEST>"---pls explain this as well

joeyg · #2 (**permalink**) 09-24-2008

It refers to the number of parameters the command is expecting. In this case, it expects three. If there are not three parameters on the command line, then error and tell you the command line format.

In your case -- $0 <sid> <COLD/HOT> <DEST>
it looks to a command
1st parmater being the sid
2nd being either HOT or COLD
3d being the dest (assume destination)

appsdba.nitin · #3 (**permalink**) 09-24-2008

Thanks man !!

More UNIX and Linux Forum Topics You Might Find Helpful
Thread	Thread Starter	Forum	Replies	Last Post
please explain the below	mail2sant	Shell Programming and Scripting	1	04-04-2008 08:04 AM
Please can any one explain this ${0##/}	gadege	Shell Programming and Scripting	2	04-01-2008 03:26 PM
please explain this	dummy_needhelp	Shell Programming and Scripting	2	10-15-2007 01:17 AM
Can anyone explain plz	r_W213	UNIX for Advanced & Expert Users	3	03-27-2007 04:52 AM
if [ $? -eq 0 ] .. can someone explain this?	ranjita.c	Shell Programming and Scripting	5	10-03-2006 07:50 PM

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search
Display Modes	Rate This Thread
Switch to Linear Mode Hybrid Mode Switch to Threaded Mode	Rate This Thread:


	Powered by