中间运行有些需要加参数或者空格还有引号之类的，可能不能运行，下面是所有的测试代码：

#!/bin/bash
#coding=utf-8
echo "What is your name?"
#read PERSON
#echo "Hello,$PERSON"

your_name="mozhiyan"
echo $your_name
echo ${your_name}

for skill in ada caffe action java
do
echo "I am good at ${skill}script"
done

myUrl="http://see.xidian.edu.cn/cpp/linux/"
echo ${myUrl}
#readonly myUrl
myUrl="http://see.xidian.edu.cn/cpp/shell/"
echo ${myUrl}

unset myUrl
echo ${myUrl}

echo $$
echo ${$}


echo "File Name: $0"
echo "First Parameter : $1"
echo "Second Parameter : $2"
echo "Quoted Values: $@"
echo "Quoted Values: $*"
echo "Total Number of Parameters : $#"

#"$* differ with $@ "
echo "\$*=" $*
echo "\"\$*\"=" "$*"

echo "\$@=" $@
echo "\"\$@\"=" "$@"

echo "print each param from \$*"
for var in $*
do
    echo "$var"
done

echo "print each param from \$@"
for var in $@
do
    echo "$var"
done

echo "print each param from \"\$*\""
for var in "$*"
do
    echo "$var"
done

echo "print each param from \"\$@\""
for var in "$@"
do
    echo "$var"
done

echo $?
a=10
echo -e "Value of a is $a \n"

DATE=`date`
echo "Date is $DATE"

USERS=`who | wc -l`
echo "Logged in user are $USERS"

UP=`date ; uptime`
echo "Uptime is $UP"

echo "+++++++++++++这段代码需要单独建立文件运行+++++++++++++++++++++"
echo ${var:-"Variable is not set"}
echo "1 - Value of var is ${var}"

echo ${var:="Variable is not set"}
echo "2 - Value of var is ${var}"

unset var
echo ${var:+"This is default value"}
echo "3 - Value of var is $var"

var="Prefix"
echo ${var:+"This is default value"}
echo "4 - Value of var is $var"

echo ${var:?"Print this message"}
echo "5 - Value of var is ${var}"
echo "+++++++++++++以上这段代码需要单独建立文件运行+++++++++++++++++++++"

val1=`expr 2 + 2`
echo "Total value : $val1"

a=10
b=20
val=`expr $a + $b`
echo "a + b : $val"

val=`expr $a - $b`
echo "a - b : $val"

val=`expr $a \* $b`
echo "a * b : $val"

val=`expr $b / $a`
echo "b / a : $val"

val=`expr $b % $a`
echo "b % a : $val"

if [ $a == $b ]
then
   echo "a is equal to b"
fi

if [ $a != $b ]
then
   echo "a is not equal to b"
fi

a=10
b=20
if [ $a -eq $b ]
then
   echo "$a -eq $b : a is equal to b"
else
   echo "$a -eq $b: a is not equal to b"
fi

if [ $a -ne $b ]
then
   echo "$a -ne $b: a is not equal to b"
else
   echo "$a -ne $b : a is equal to b"
fi

if [ $a -gt $b ]
then
   echo "$a -gt $b: a is greater than b"
else
   echo "$a -gt $b: a is not greater than b"
fi

if [ $a -lt $b ]
then
   echo "$a -lt $b: a is less than b"
else
   echo "$a -lt $b: a is not less than b"
fi

if [ $a -ge $b ]
then
   echo "$a -ge $b: a is greater or  equal to b"
else
   echo "$a -ge $b: a is not greater or equal to b"
fi

if [ $a -le $b ]
then
   echo "$a -le $b: a is less or  equal to b"
else
   echo "$a -le $b: a is not less or equal to b"
fi

a=10
b=20

if [ $a != $b ]
then
   echo "$a != $b : a is not equal to b"
else
   echo "$a != $b: a is equal to b"
fi

if [ $a -lt 100 -a $b -gt 15 ]
then
   echo "$a -lt 100 -a $b -gt 15 : returns true"
else
   echo "$a -lt 100 -a $b -gt 15 : returns false"
fi

if [ $a -lt 100 -o $b -gt 100 ]
then
   echo "$a -lt 100 -o $b -gt 100 : returns true"
else
   echo "$a -lt 100 -o $b -gt 100 : returns false"
fi

if [ $a -lt 5 -o $b -gt 100 ]
then
   echo "$a -lt 100 -o $b -gt 100 : returns true"
else
   echo "$a -lt 100 -o $b -gt 100 : returns false"
fi

a="abc"
b="efg"

if [ $a = $b ]
then
   echo "$a = $b : a is equal to b"
else
   echo "$a = $b: a is not equal to b"
fi

if [ $a != $b ]
then
   echo "$a != $b : a is not equal to b"
else
   echo "$a != $b: a is equal to b"
fi

if [ -z $a ]
then
   echo "-z $a : string length is zero"
else
   echo "-z $a : string length is not zero"
fi

if [ -n $a ]
then
   echo "-n $a : string length is not zero"
else
   echo "-n $a : string length is zero"
fi

if [ $a ]
then
   echo "$a : string is not empty"
else
   echo "$a : string is empty"
fi


file="/home/x/git/sh_project/test.sh"

if [ -r $file ]
then
   echo "File has read access"
else
   echo "File does not have read access"
fi

if [ -w $file ]
then
   echo "File has write permission"
else
   echo "File does not have write permission"
fi

if [ -x $file ]
then
   echo "File has execute permission"
else
   echo "File does not have execute permission"
fi

if [ -f $file ]
then
   echo "File is an ordinary file"
else
   echo "This is sepcial file"
fi

if [ -d $file ]
then
   echo "File is a directory"
else
   echo "This is not a directory"
fi

if [ -s $file ]
then
   echo "File size is zero"
else
   echo "File size is not zero"
fi

if [ -e $file ]
then
   echo "File exists"
else
   echo "File does not exist"
fi



your_name='qinjx'
str="Hello,I know your are \"$your_name\"! \n"

echo -e $str


NAME[0]="Zara"
NAME[1]="Qadir"
NAME[2]="Mahnaz"
NAME[3]="Ayan"
NAME[4]="Daisy"
echo "First Index: ${NAME[0]}"
echo "Second Index: ${NAME[1]}"

NAME[0]="Zara"
NAME[1]="Qadir"
NAME[2]="Mahnaz"
NAME[3]="Ayan"
NAME[4]="Daisy"
echo "First Method: ${NAME[*]}"
echo "Second Method: ${NAME[@]}"

length=${#NAME[*]}
echo "$length"

echo "\"It is a test\""

mouth=8
echo "${mouth}-1-2009"

echo -e "OK!\n"
echo "It is a test"

echo -e "OK!\c"
echo "It is a test"
echo '$name\"'
echo `date`

printf "%d %s\n" 1 "abc"
printf '%d %s\n' 1 "abc" 
printf "%s\n" abc def
printf "%s %s %s\n" a b c d e f g h i j
printf "%s and %d \n"
printf "The first program always prints'%s,%d\n'" Hello Shell

num1=$[2*3]
num2=$[1+5]
if test $[num1] -eq $[num2]
then
  echo 'The two numbers are equal!'
else
  echo 'The two numbers are not equal!'
fi

echo 'Input a number between 1 to 4'
echo -e 'Your number is:\c'
read aNum
case $aNum in
   1)  echo 'You select 1'
        ;;
   2)  echo 'You select 2'
        ;;
   3)  echo 'You select 3'
        ;;
   4)  echo 'You select 4'
        ;;
   *)  echo 'You do not select a number between 1 to 4'
        ;;
    esac

option="${1}"
case ${option} in
   -f) FILE="${2}"
      echo "File name is $FILE"
      ;;
   -d) DIR="${2}"
      echo "Dir name is $DIR"
      ;;
   *) 
      echo "`basename ${0}`:usage: [-f file] | [-d directory]"
      exit 1 # Command to come out of the program with status 1
      ;;
esac


for loop in 1 2 3 4 5
do
  echo "The value is: $loop"
done



for str in 'This is a string'
do
 echo $str
done


for FILE in $HOME/.bash*
do
   echo $FILE
done

COUNTER=0
while [ $COUNTER -lt 5 ]
do
  COUNTER=`expr $COUNTER + 1`
  echo $COUNTER
done

#echo 'type <CTRL-D> to terminate'
#echo -n 'enter your most liked film: '
#while read FILM
#do
#  echo "Yeah! great film the $FILM"
#done

while :
do
    echo -n "Input a number between 1 to 5: "
    read aNum
    case $aNum in
        1|2|3|4|5) echo "Your number is $aNum!"
        ;;
        *) echo "You do not select a number between 1 to 5,game is over!"
            break
        ;;
    esac
done



for var1 in 1 2 3
do
   for var2 in 0 5
   do
      if [ $var1 -eq 2 -a $var2 -eq 0 ]
      then
	 echo "find the variables：$var1 $var2"
         break 2
      else
         echo "$var1 $var2"
      fi
   done
done

NUMS="1 2 3 4 5 6 7"

for NUM in $NUMS
do
   Q=`expr $NUM % 2`
   if [ $Q -eq 0 ]
   then
      echo "Number is an even number!!"
      continue
   fi
   echo "Found odd number"
done



Hello () {
   echo "Url is http://see.xidian.edu.cn/cpp/shell/"
}
Hello



funWithReturn(){
    echo "The function is to get the sum of two numbers..."
    echo -n "Input first number: "
    read aNum
    echo -n "Input another number: "
    read anotherNum
    echo "The two numbers are $aNum and $anotherNum !"
    return $(($aNum+$anotherNum))
}
funWithReturn
# Capture value returnd by last command
ret=$?
echo "The sum of two numbers is $ret !"


number_one () {
   echo "Url_1 is http://see.xidian.edu.cn/cpp/shell/"
   number_two
}

number_two () {
   echo "Url_2 is http://see.xidian.edu.cn/cpp/u/xitong/"
}
number_one


funWithParam(){
    echo "The value of the first parameter is $1 !"
    echo "The value of the second parameter is $2 !"
    echo "The value of the tenth parameter is $10 !"
    echo "The value of the tenth parameter is ${10} !"
    echo "The value of the eleventh parameter is ${11} !"
    echo "The amount of the parameters is $# !"  # 参数个数
    echo "The string of the parameters is $* !"  # 传递给函数的所有参数
}
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