1、基本shell脚本
#!/bin/bash
command
2、参数的变量
$0:脚本名称
$#:参数的数目
$*:参数
$1:第一个参数
$2:第二个参数
$3:第三个参数
$?:上一条命令执行成功输出0,否则其他数字。
[root@PC3 test]# cat a.sh
#!/bin/bash
echo "name: $0"
echo "number of args: $#"
echo "args: $*"
echo "1st arg: $1"
echo "4st arg: $4"
echo "2st arg: $2"
echo "the result of last command: $?"
[root@PC3 test]# bash a.sh one two three four five six
name: a.sh
number of args: 6
args: one two three four five six
1st arg: one
4st arg: four
2st arg: two
the result of last command: 0