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Bash参数列表

一、取参数

Command	Meaning
$@ $*	Represent all arguments
$#	The number of arguments
$0	The script name
$1	The first argument name
${10}	The ten argument name

二、解析路径

Basename: get the file name except dir path

Dirname: get dir path except file name

三、代码

#! /bin/bash

#./arglist.sh abc def ghi jkl mno pqr stu

echo "There are $@"

echo "There are $*"

echo "There are $#"

echo "There are $1"

echo "There are ${10}"

##########result

#There are abc def ghi jkl mno pqr stu

#There are abc def ghi jkl mno pqr stu

#There are 7

#There are abc

#There are

##########Key Point

##########1."$@" and "$*" represent all arguments

##########2."$#" indicates the number of arguments

##########3."$0" represents the name of the script

##########4."$1" represents the name of the first argument

##########5."${10}" represents the name of the ten argument

#########get script file name and dir path

echo "The script file name `basename $0`"

echo "The script file name"

echo `basename $0`

echo "The script file dir path `dirname $0`"

echo "The script file dir path"

echo `dirname $0`

#########result

#The script file name arglist.sh

#The script file name

#arglist.sh

#The script file dir path .

#The script file dir path

#.