command
meaning
$@ $*
represent all arguments
$#the number of arguments
$0the script name
$1the first argument name
$the ten argument name
basename: get the file name except dir path
dirname: get dir path except file name
#! /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 $"
##########result
#there are abc def ghi jkl mno pqr stu
#there are abc def ghi jkl mno pqr stu
#there are 7
#there are abc
#there are
##########key point
##########1."$@" and "$*" represent all arguments
##########2."$#" indicates the number of arguments
##########3."$0" represents the name of the script
##########4."$1" represents the name of the first argument
##########5."$" 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
#.
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