#!/bin/bash

echo "
\$0 = $0
\$1 = $1
\$2 = $2
\$3 = $3
\$4 = $4
\$5 = $5
\$6 = $6
\$7 = $7
\$8 = $8
\$9 = $9
\$0 = $0   
num is of args is $#
"

$0 = /root/posi1.sh
$1 = a
$2 = b
$3 = c
$4 =
$5 =
$6 =
$7 =
$8 =
$9 =
number of args is 3

#!/bin/bash

test1 () {
echo "\$1=$1"
echo "\$2=$2"
echo "\$3=$3"
echo "\$4=$4"
}

test2 () {
echo  -e "\n" '$* :'
test1 $*
echo -e "\n" '$* :'
test1 "$*"

echo -e "\n" '$@ :'
test1 $@
echo -e "\n" '$@ :'
test1 "$@"
}

test2 "wo" "shi wang" "teng"

 $* :
$1=wo
$2=shi
$3=wang
$4=teng

 $* :
$1=wo shi wang teng
$2=
$3=
$4=

 $@ :
$1=wo
$2=shi
$3=wang
$4=teng

 $@ :
$1=wo
$2=shi wang
$3=teng
$4=