#!/bin/bash
echo "**********argument**********"
echo script name: $0
echo first argument $1
echo second argument $2
echo num of argument $#
echo all argument $@
#function
equal()
{
case $1 in
$2)
return 0
;;
*)
return 1
;;
esac
}
#if
echo "**********test if**********"
if equal $1 $2;
then
echo "equal"
else
echo "not equal"
fi
if [ $# -gt 0 ];
then
echo number of argument greater than 0
echo $@
else
echo number of argument is 0
fi
#for
echo "**********test for**********"
for i in $@
do
echo $i
done
LIMIT=5
for (( a=1; a<=$LIMIT; a++ ))
do
echo "$a"
done
#while
echo "**********test while**********"
a=0
LIMIT=10
while [ $a -lt $LIMIT ]
do
echo $a
a=$((a+1))
done
#case
echo "**********test case**********"
read -p "press some key, then press return:" KEY
case $KEY in
[a-zA-Z])
echo "It's a letter!"
;;
[0-9])
echo "It's a number!"
;;
*)
echo "other key!"
;;
esac
#printf
echo "**********test printf**********"
x=abc; printf "x is now: %s, Enter new value:" $x; read x
运行./test.sh 1 1结果如下：
