linux中shell变量$#,$@,$0,$1,$2的含义解释(jieshi): 变量说明(shuoming): $$ Shell本身(benshen)的PID（ProcessID） $! Shell最后(zuihou)运 行(running)的后台Process的PID $? 最后(zuihou)运 行(running)的命令的结束(jieshu)代码（返回(fanhui)值） $- 使用(shiyong)Set命令设定的Flag一览 $* 所有(suoyou)参数列表。如"$*"用「"」括起来的情况(qingkuang)、以"$1 $2 … $n"的形式(xingshi)输出(shuchu)所有(suoyou)参数。 $@ 所有(suoyou)参数列表。如"$@"用「"」括起来的情况(qingkuang)、以"$1" "$2" … "$n" 的形式(xingshi)输出(shuchu)所有(suoyou)参数。 $# 添加(tianjia)到Shell的参数个数 $0 Shell本身(benshen)的文件名 $1～$n 添加(tianjia)到Shell的各参数值。$1是第1参数、$2是第2参数…。 示例：1 #!/bin/bash2 #3 printf "The complete list is %s\n" "$$"4 printf "The complete list is %s\n" "$!"5 printf "The complete list is %s\n" "$?"6 printf "The complete list is %s\n" "$*"7 printf "The complete list is %s\n" "$@"8 printf "The complete list is %s\n" "$#"9 printf "The complete list is %s\n" "$0"10 printf "The complete list is %s\n" "$1"11 printf "The complete list is %s\n" "$2结果(jieguo)：[Aric@localhost ~]$ bash params.sh 123456 QQThe complete list is 24249The complete list is The complete list is 0The complete list is 123456 QQThe complete list is 123456The complete list is QQThe complete list is 2The complete list is params.shThe complete list is 123456The complete list is QQ
posted on 2012-04-24 23:24
kxbin 阅读(470)
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