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Full Discussion: Shell script with arguments
Top Forums Shell Programming and Scripting Shell script with arguments Post 45307 by norsk hedensk on Wednesday 17th of December 2003 10:08:42 PM
Old 12-17-2003
taking command line arguments in bash is fairly easy, heres a piece of code i wrote for a small script a few months ago, most of it is from the tldp.org advanced bash shell scripting guide. what i did was put the first thing ran in the code in a function called "main()". you call this function with:
Code:
main "$@"

main looks like this:
Code:
main ()
{
NO_ARGS=0
E_OPTERROR=65

if [ $# -eq "$NO_ARGS" ] # should check for no arguments
then
	echo "Usage: `basename $0` -s<OPTIONS> <HOSTNAME> "
	echo "You must specify interactive, or non interactive mode for now"
	echo "Try './serverstatus -h' for more information."
	exit $E_OPTERROR
fi

while getopts ":sicnvh" Option
do
	case $Option in

		s )
			hostname=`echo $@`
			hostname2=`echo $hostname|awk '{print $2}'`
			echo $hostname2
			a=`nmap $hostname2`

		;;

		i )
			interactivemode_func
		;;

                c )
                       add_serv
                ;;
		n )
			non_interactivemode_func
		;;

		v )
			version_func
		;;

		h )
			help_func
		;;

		* )
			echo "Unimplemented option chosen"
		;;
	esac
done

shift $(($OPTIND - 1))

}

hope that helps!
 

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echo(1B)					     SunOS/BSD Compatibility Package Commands						  echo(1B)

NAME
echo - echo arguments to standard output SYNOPSIS
/usr/ucb/echo [-n] [argument] DESCRIPTION
echo writes its arguments, separated by BLANKs and terminated by a NEWLINE, to the standard output. echo is useful for producing diagnostics in command files and for sending known data into a pipe, and for displaying the contents of envi- ronment variables. For example, you can use echo to determine how many subdirectories below the root directory (/) is your current directory, as follows: o echo your current-working-directory's full pathname o pipe the output through tr to translate the path's embedded slash-characters into space-characters o pipe that output through wc -w for a count of the names in your path. example% /usr/bin/echo "echo $PWD | tr '/' ' ' | wc -w" See tr(1) and wc(1) for their functionality. The shells csh(1), ksh(1), and sh(1), each have an echo built-in command, which, by default, will have precedence, and will be invoked if the user calls echo without a full pathname. /usr/ucb/echo and csh's echo() have an -n option, but do not understand back-slashed escape characters. sh's echo(), ksh's echo(), and /usr/bin/echo, on the other hand, understand the black-slashed escape characters, and ksh's echo() also understands a as the audible bell character; however, these commands do not have an -n option. OPTIONS
-n Do not add the NEWLINE to the output. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWscpu | +-----------------------------+-----------------------------+ SEE ALSO
csh(1), echo(1), ksh(1), sh(1), tr(1), wc(1), attributes(5) NOTES
The -n option is a transition aid for BSD applications, and may not be supported in future releases. SunOS 5.11 3 Aug 1994 echo(1B)
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