shell脚本的学习笔记

shell脚本的学习笔记

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更改IP
vim changeto192
 #!/bin/sh
 ifconfig eth0 192.168.1.88 netmask 255.255.255.0 broadcast 192.168.1.111 up
保存退出，chmod ＋x changeto192

将IP更改为192.168.1.88 netmask 255.255.255.0 broadcast 192.168.1.111 up

 

#vim changeto10
  #!/bin/sh
  ifconfig eth0 10.10.208.88 netmask 255.255.255.0 broadcast 10.10.208.254 up
  ifconfig eth0 down
  ifconfig eth0 up
保存退出，chmod ＋x changeto10
将IP更改为10.10.208.88  netmask 255.255.255.0 broadcast 10.10.208.254 up


以后每次要更改IP，只需执行脚本文件changeto10 和changeto192 即可

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case语句的学习

#!/bin/bash
echo
echo "1.restore"
echo "2.backup"
echo "3.unload"
echo
echo -n "Enter choice:"
read CHOICE
case "$CHOICE" in
1) echo "restore";;
2) echo "backup";;
3) echo "unload";;
*) echo "sorry,no such chioce!!!!"
exit 1
esac

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删除文件或文件夹

#!/bin/bash
first()
{   
    echo "=============================================================="
}

first

echo "please input the file you want to delete:"
read FILE
rm -rf $FILE
 echo "the FILE $FILE has been deleted!"
 echo "the remain files:"
ls
first

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更改文件的权限（＋x）


#!/bin/bash
echo  -n  "please choose the file that needed to be changed:"

read FILE
echo "the file you input is $FILE!"
chmod +x $FILE
ls -l
echo "The $FILE has been changed!(+X)"

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更改文件的权限（－x）

#!/bin/bash
echo  -n  "please choose the file that needed to be changed:"

read FILE
echo "the file you input is $FILE!"
chmod -x $FILE
ls -l
echo "The $FILE has been changed!(-X)"

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输入分数判断是否及格

#!/bin/bash
echo  "please input a score:"
read score
echo "your input score is $score"
if [ $score -ge 60 ];
then
echo  "congratulation! you pass the examination."
else
echo  "sorry, you faled the examination!"
fi
echo  "press any key to continue!"
read $GOOUT

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tftp_login(用ftp登录开发板)

#!/bin/sh
ifconfig eth0 192.168.1.88 netmask 255.255.255.0 broadcast 192.168.1.111 up
ftp 192.168.1.230

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tftp_logout(退出ftp登录)

#!/bin/sh
ifconfig ifconfig eth0 10.10.208.88 netmask 255.255.255.0 broadcast 10.10.208.254 up
ifconfig

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待续