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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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shtool-echo

SHTOOL-ECHO.TMP(1)					      GNU Portable Shell Tool						SHTOOL-ECHO.TMP(1)

NAME

       shtool-echo - GNU shtool echo(1) extensional command

SYNOPSIS

       shtool echo [-n|--newline] [-e|--expand] string

DESCRIPTION

       shtool echo is an echo(1) style command which prints string to stdout and optionally provides special expansion constructs (terminal bold
       mode, environment details, date, etc) and newline control. The trick of this command is that it provides a portable -n option and hides the
       gory details needed to find out the environment details under option -e.

OPTIONS

       The following command line options are available.

       -n, --newline
	   By default, output is written to stdout followed by a "newline" (ASCII character 0x0a). If option -n is used, this newline character is
	   omitted.

       -e, --expand
	   If option -e is used, string can contain special "%x" constructs which are expanded before the output is written. Currently the
	   following constructs are recognized:

	   %B  switch terminal mode to bold display mode.

	   %b  switch terminal mode back to normal display mode.

	   %u  the current user name.

	   %U  the current user id (numerical).

	   %g  the current group name.

	   %G  the current group id (numerical).

	   %h  the current hostname (without any domain extension).

	   %d  the current domain name.

	   %D  the current day of the month.

	   %M  the current month (numerical).

	   %m  the current month name.

	   %Y  the current year.

EXAMPLE

	#   shell script
	shtool echo -n -e "Enter your name [%B%u%b]: "; read name
	shtool echo -e "Your Email address might be %u@%h%d"
	shtool echo -e "The current date is %D-%m-%Y"

HISTORY

       The GNU shtool echo command was originally written by Ralf S.  Engelschall <rse@engelschall.com> in 1998 for Website META Language (WML)
       under the name buildinfo. It was later taken over into GNU shtool.

SEE ALSO

       shtool(1), echo(1).

18-Jul-2008							   shtool 2.0.8 						SHTOOL-ECHO.TMP(1)
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