2017 the latest enterprise face Test Shell (ii)

2017 the latest enterprise face Test Shell (ii)

Exercise 1: write a shell script that lists the IP of the 192.169.5.0/24 network segment online. (Locate the active IP)

Requirements are as follows:

1. The online IP and the online IP are placed in two files respectively to facilitate later inspection;

2. Do not affect the operation of the current terminal;

3. After the script has finished running, give the message that the script has finished running.

The script reads as follows:

Method One:

#!/bin/bash

[-f/etc/init.d/functions] &&. /etc/init.d/functions| | Exit1

# Verify that the system function file exists and call the system function if it exists, otherwise quit!

Ips= "192.169.5."

For I in $ (seq 254)

Do

Ping-c 2 $ips $i >/dev/null 2>/dev/null

If ["$?" = = "0"]

Then

echo "Echo $ips $i is online" >>/root/ip_online.txt

Else

echo "Echo $ips $i is not online" >>/root/ip_noline.txt

Fi

Done

If ["$ips $i"! = "192.169.5.255"];then

Action "shell script execution is complete! "/bin/true

Fi

Method Two:

#!/bin/bash

[-f/etc/init.d/functions] &&. /etc/init.d/functions| | Exit1

# Verify that the system function file exists and call the system function if it exists, otherwise quit!

For IP in $ (cat/root/ip.txt)

Do

Ping-c 2 $ip >/dev/null 2>/dev/null

If ["$?" = = "0"]

Then

echo "Echo $ip is online" >>/root/ip_online.txt

Else

echo "Echo $ip is not online" >>/root/ip_noline.txt

Fi

Done

If ["$ip"! = "192.169.5.255"];then

Action "shell script execution is complete! "/bin/true

Fi

Description

(1) If the script name ip_online.sh, execute the script without affecting the use of the current terminal, using the SH ip_online.sh & command.

(2) It is not recommended to use method two because editing a/root/ip.txt file is a waste of time.

This article is from the "Hand of the Paladin Control" blog, please make sure to keep this source http://wutengfei.blog.51cto.com/10942117/1961226

2017 the latest enterprise face Test Shell (ii)