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脚本名称：$0
PID：$$
参数个数：$#
脚本返回值：$?
第x个参数：$x
所有参数：$@
1 #!/bin/bash 2 echo "The program $0 is now running" 3 echo "The progress PID is $$" 4 echo "The last progress PID is $$" 5 echo "The number of parameter is $# " 6 echo "The return code of last command is $?" 7 echo "The first parameter is $1" 8 echo "The second parameter is $2" 9 echo "The parameters are: $*" 10 echo "Again, the parameters are: $@"
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原文地址：http://www.cnblogs.com/imzye/p/5059091.html
