<div>
#!/bin/bash 
ping -c 2 'xxx.xxx.xxx.xxx' &gt;&nbsp;/dev/null 
if [ $? -eq 0 ]; then 
echo &quot;Alive&quot;; 
else 
echo &quot;Dead&quot;; 
fi 
 
 
You can put forloop of ips. 
 
 
IPS='1.1.1.1 2.2.2.2 3.3.3.3' 
for ip in IPS;do 
{ 
ping -c 2 '$ip' &gt;&nbsp;/dev/null 
if [ $? -eq 0 ]; then 
echo &quot;Alive&quot;; 
else 
echo &quot;Dead&quot;; 
fi 
} 
done
</div>

#!/bin/bash
ping -c 2 'xxx.xxx.xxx.xxx' > /dev/null
if [ $? -eq 0 ]; then
echo "Alive";
else
echo "Dead";
fi


You can put forloop of ips.


IPS='1.1.1.1 2.2.2.2 3.3.3.3'
for ip in IPS;do
{
ping -c 2 '$ip' > /dev/null
if [ $? -eq 0 ]; then
echo "Alive";
else
echo "Dead";
fi
}
done

<div>
<div class="content wysiwyg-content">
Hi experts. 
 
How can I accomplish the following: 
 
 
if(eth0 recives icmp reply &amp;&amp;&nbsp;interface eth1 is down) 
ifconfig eth1 up 
else 
ifconfig eth1 down 
 
I am using CentOS 5.6
</div>
</div>

Hi experts.

How can I accomplish the following:


if(eth0 recives icmp reply && interface eth1 is down)
ifconfig eth1 up
else
ifconfig eth1 down

I am using CentOS 5.6

Check Interface state(up/down) and grep 'recieved' in ping

Linux is a UNIX-like open source operating system with hundreds of distinct distributions, including: Fedora, openSUSE, Ubuntu, Debian, Slackware, Gentoo, CentOS, and Arch Linux. Linux is generally associated with web and database servers, but has become popular in many niche industries and applications.

Linux

A scripting language is a programming language that supports scripts, programs written for a special run-time environment that automate the execution of tasks that could alternatively be executed one-by-one by a human operator. Scripting languages are often interpreted (rather than compiled). Primitives are usually the elementary tasks or API calls, and the language allows them to be combined into more complex programs. Environments that can be automated through scripting include software applications, web pages within a web browser, the shells of operating systems (OS), embedded systems, as well as numerous games. A scripting language can be viewed as a domain-specific language for a particular environment; in the case of scripting an application, this is also known as an extension language.