Fping is a small program that uses ICMP (Internet Control Message Protocol) echo requests that the target host responds like ping command in Linux. It differs from the ping command as it pings the number of specified hosts on the command line or specific files with a list of IP addresses to ping.

For example, we can specify the complete network Fping (192.168.0.1/24 Class C Network). As mentioned, it will send a Fping request to the host and move to another target host. This works like a round-robin. Unlike ping, fping is meant for basic scripting.

If you want Fping, you will need to install Fping packages separately as this doesn’t come together with the Operating System.

How to Install Fping on CentOS 7

First, download fping source package to your Linux server (the latest version is 3.10):

wget http://fping.org/dist/fping-3.10.tar.gz

To install the fping application, follow the steps below:

tar -xvf fping-3.10.tar.gz

cd fping-3.10

./configure

make

make install

You can compile fping with support for IPv6 addresses follow the next steps:

./configure --prefix=/usr/local --enable-ipv4 --enable-ipv6

make

make install

That's it! You have successfully installed fping on your CentOS server. Now for the next section of the article, we will go through some of the basic use cases of the fping command!

Use cases of the fping command

Fping multiple IP addresses:

fping 8.8.8.8 8.8.4.4 104.28.25.20

8.8.4.4 is alive
8.8.8.8 is alive
104.28.25.20 is alive

Fping range of IP addresses:

fping -s -g 192.168.1.1 192.168.1.5

ICMP Network Unreachable from 83.231.213.65 for ICMP Echo sent to 192.168.1.1
ICMP Network Unreachable from 83.231.213.65 for ICMP Echo sent to 192.168.1.3
ICMP Network Unreachable from 83.231.213.65 for ICMP Echo sent to 192.168.1.5
ICMP Network Unreachable from 83.231.213.65 for ICMP Echo sent to 192.168.1.1
ICMP Network Unreachable from 83.231.213.65 for ICMP Echo sent to 192.168.1.3
ICMP Network Unreachable from 83.231.213.65 for ICMP Echo sent to 192.168.1.5
ICMP Network Unreachable from 83.231.213.65 for ICMP Echo sent to 192.168.1.1
ICMP Network Unreachable from 83.231.213.65 for ICMP Echo sent to 192.168.1.3
ICMP Network Unreachable from 83.231.213.65 for ICMP Echo sent to 192.168.1.5
ICMP Network Unreachable from 83.231.213.65 for ICMP Echo sent to 192.168.1.1
ICMP Network Unreachable from 83.231.213.65 for ICMP Echo sent to 192.168.1.3
ICMP Network Unreachable from 83.231.213.65 for ICMP Echo sent to 192.168.1.5
192.168.1.1 is unreachable
192.168.1.2 is unreachable
192.168.1.3 is unreachable
192.168.1.4 is unreachable
192.168.1.5 is unreachable

       5 targets
       0 alive
       5 unreachable
       0 unknown addresses

       5 timeouts (waiting for response)
      20 ICMP Echos sent
       0 ICMP Echo Replies received
      12 other ICMP received

 0.00 ms (min round trip time)
 0.00 ms (avg round trip time)
 0.00 ms (max round trip time)
        4.191 sec (elapsed real time)

Fping complete network

fping -g -r 3 192.168.1.1/24

Show fping version

fping -v

fping: Version 3.10
fping: comments to [email protected]

Wrapping up

Congratulations! You have successfully installed Fping on your CentOS 7 VPS. We also covered some of the basic use cases of the fping command. We hope that you managed to set it up and if you encounter any problems during the installation, let us know in the comments below.

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