#!/bin/sh
echo -e “$#(number of parameters):” $#
echo -e “$0(program name):” $0
echo -e “$1(first parameter):” $1
echo -e “$2(second parameter):” $2
echo -e “$@(all parameters):” “$@”
echo -e “$*(show parameters):” $*
echo -e “$$(pid of this program):” $$
echo -e “$?(show exit stat of previous program):” $?
shell>chmod u+x /tmp/test.sh
shell>/tmp/test.sh p1 -p2 –p3
$#(number of parameters):3
$0(program name):/tmp/test.sh
$1(first parameter):p1
$2(second parameter):-p2
$@(all parameters):p1 -p2 –p3
$*(show parameters):p1 -p2 –p3
$$(pid of this program):24063
$?(show exit stat of previous program):0