Variable Function
$0 script name
Access $1 ～ $9 arguments, $1 for the first argument, $2 for the second argument
$ # number of arguments given to the script
$ * treat all arguments together as one
$ @ Thread all arguments as separate
$? End value of the last executed command (0 is success, 1 is failure)
$$ Process ID of this shell script
$! last executed background process ID
#!/bin/sh echo "\$0 (スクリプト名)： $0" echo "\$1 (1番目の引数)： $1" echo "\$2 (2番目の引数)： $2" echo "\$# (引数の数)： $#" echo "\"\$*\": \"$*\"" echo "\"\$@\": \"$@\"" VAR="exit値は0になるはずです" echo $?
[vagrant@localhost tests]$ sed -i ‘s/\r//’ test.sh
[vagrant@localhost tests]$ ./test.sh
$0 (スクリプト名)： ./test.sh
$1 (1番目の引数)：
$2 (2番目の引数)：
$# (引数の数)： 0
“$*”: “”
“$@”: “”
0
