Linux ping всей сети

How to ping all the ip in LAN using Terminal?

I am trying to ping all the systems available in the local area network using terminal command. Can any one tell me how to do this?

4 Answers 4

You can install an application called nmap .

Then you can check your entire network for all connected IP addresses by typing in the following:

The above command will scan all IP addresses starting at 192.168.1.1 through 192.168.1.254 and show you all IPs that responded.

You can scan other IP address ranges like 192.168.0.1 — 192.168.1.254 by typing in the following:

A typical scan might return something like the following:

terrance@terrance-ubuntu:~$ nmap -sP 10.0.0.1/24 Starting Nmap 6.40 ( http://nmap.org ) at 2015-12-24 00:20 MST Nmap scan report for Linksys03773 (10.0.0.1) Host is up (0.00078s latency). Nmap scan report for terrance-ubuntu (10.0.0.100) Host is up (0.00020s latency). Nmap scan report for android (10.0.0.148) Host is up (0.099s latency). Nmap scan report for PC (10.0.0.149) Host is up (0.0014s latency). Nmap scan report for 10.0.0.150 Host is up (0.0016s latency). Nmap scan report for 10.0.0.165 Host is up (0.011s latency). Nmap scan report for 10.0.0.169 Host is up (0.010s latency). Nmap scan report for 10.0.0.179 Host is up (0.014s latency). Nmap scan report for android (10.0.0.181) Host is up (0.093s latency). Nmap scan report for android (10.0.0.188) Host is up (0.043s latency). Nmap scan report for android (10.0.0.196) Host is up (0.014s latency). Nmap scan report for 10.0.0.253 Host is up (0.0013s latency). Nmap done: 256 IP addresses (12 hosts up) scanned in 4.46 seconds 

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15+ ping command examples in Linux [Cheat Sheet]

ping (Packet Internet Groper) is a command-line utility in Linux to check the network connectivity between host and host/server. It also helps to test, diagnose, and troubleshoot network connectivity issues. With the ping command, you can know if a server is up and running. The ping sends ICMP (Internet Control Message Protocol) ECHO_REQUEST messages to the specified host and waits for the reply. If the host is available, it sends an ICMP echo reply message (ECHO_RESPONSE). If ping does not receive any reply packets, it will exit with code 1.

Syntax to use ping command

The syntax for the ping command is:

Some options available in the ping command are given below.

Different examples to use ping command in Linux

1. ping command to check the network connectivity of target host

You can run the ping command without any option to check if the server of the target host is up and running. For example, to test our website, you can use the website name or IP address.

Sample Output:

You need to press Ctrl+C to stop the ping otherwise it will keep sending the packets infinitely. DUP! are the duplicate packets caused by inappropriate link-level retransmissions.

2. Specify the number of pings to be performed with ping command

When you specify the count N, the ping command stops sending the packets after N replies. You do not have to stop the ping with Ctrl+C.

Sample Output:

3. Check localhost network with ping command

You can ping localhost to check if you have a network connection.

Sample Output:

4. Set interval seconds between sending each packet with ping command

The -i option set interval time in seconds to wait before sending each packet. The default is to wait for one second between each packet, or not to wait in flood mode.

Sample Output:

5. Perform flood ping towards target host

The -f option is used to run the flood ping. In flood ping, for every ECHO_REQUEST sent a period ».» is printed, and for every ECHO_REPLY received a backspace is printed. The interval time is zero and the packets are sent one hundred times per second. Only the super-user can use this option with zero intervals.

Sample Output:

6. Specify the number of data bytes to be sent with ping command

The -s option specifies the number of data bytes to be sent. The default size is 56 ICMP data bytes which become 64 bytes when combined with the 8 bytes of ICMP header data.

Sample Output:

7. Display only the summary lines for ping command output

The -q option can be used to display only the summary lines at startup time and when finished.

Sample Output:

8. Set special IP timestamp options

The -T option sets special IP timestamp options. timestamp option can be:

• tsonly: only timestamps
• tsandaddr: timestamps and addresses
• tsprespec host1 [host2 [host3 [host4]]]: timestamp prespecified hops

Sample Output:

9. Specify the timeout in seconds for ping command

The -w option specifies a ( timeout in seconds) before ping exits regardless of how many packets have been sent or received. ping waits for the reply in seconds.

Sample Output:

10. Set time to wait for a response for ping command

The -W option is used to set the time to wait for a response, in seconds. The option affects only timeout in absence of any responses otherwise, ping waits for two RTTs (round-trip time).

Sample Output:

11. Send multiple packets while waiting for replies with ping command

The -l option specifies the number of packets that are to be sent while waiting for replies. Only the super-user can select preload more than 3.

Sample Output:

12. Set the IP time to live with ping command

You can use -t option to set the IP time to live (TTL). It limits the number of network hops. The value ranges between 1 and 255.

Sample Output:

13. Print timestamps with ping command

The -D option prints the timestamps before every line.

Sample Output:

14. Use IPv4 or IPv6 address with ping command

The -4 and -6 options are used to specify the IPv4 and IPv6 addresses respectively.

Sample Output:

When you use the IPv6 address with -4 option, it shows an error message.

ubuntu@golinux:~$ ping -4 2606:4700::6813:9a5c ping: 2606:4700::6813:9a5c: Address family for hostname not supported

15. Perform audible ping

When the -a option is used, the system will produce a sound if there is a reply from the host.

Sample Output:

16. Report ICMP ECHO reply for ping command

The -O option reports outstanding ICMP ECHO reply before sending the next packet. It is useful together with the -D option to log
output to a diagnostic file and search for missing answers.

Sample Output:

17. Print full user-to-user latency with ping command

Normally, ping prints network round trip time which can be different, for example, due to DNS failures. The -U option can be used to print full user-to-user latency.

Sample Output:

Conclusion

This tutorial teaches you to use ping command with different options in a Linux system. ping is a useful tool that allows you to test the connectivity of a specified host on the network. If you still have any confusion, please let us know in the comment section.

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