shell 简单使用 （一）

#! /bin/bash

echo -n "word 1:"
read word1
echo -n "word 2:"
read word2

if [ "$word1" == "$word2" ]
then
echo "match"
else
echo "no match"
fi

echo "end of program"

ywx@yuweixian:~/yu/linux_command_vim_shell/bash$ ./if1
word 1:yu
word 2:yu
match

#! /bin/bash

for fruit in apple orange pear banana
do
        echo "$fruit"
done

echo "finish"

ywx@yuweixian:~/yu/linux_command_vim_shell/bash$ ./fruit2
apple
orange
pear
banana
finish

#! /bin/bash

for arg
do
        echo "$arg"
done

echo "finish"

ywx@yuweixian:~/yu/linux_command_vim_shell/bash$ ./for3 tek yu weixian
tek
yu
weixian
finish

#! /bin/bash

number=0
while [ "$number" -lt 10 ]
do
        echo -n "$number"
        ((number +=1))
done

echo

ywx@yuweixian:~/yu/linux_command_vim_shell/bash$ ./count4
0123456789