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几个Shell的特殊参数
Author: KDr2
10
Jan
$0 = shell名称或shel脚本名称
$1 = 第一个(1)shell参数
...
$9 = 第九个(9)shell参数
$# = 位置参数的个数
"$*" = "$1 $2 $3 $4 ... $n"
"$@" = "$1" "$2" "$3" "$4" ... "$n"
$? = 最近执行的命令的退出状态
$$ = 当前shell脚本的PID
$! = 最近启动的后台作业的PID
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GNU AutoTools
Author: KDr2
9
Jan
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