How to use parallel ssh (PSSH) for executing ssh in parallel on a number of Linux/Unix/BSD servers

[nixcraft]

Originally published at: https://www.cyberciti.biz/cloud-computing/how-to-use-pssh-parallel-ssh-program-on-linux-unix/

Recently I come across a nice little nifty tool called pssh to run a single command on multiple Linux / UNIX / BSD servers. You can easily increase your productivy with this SSH tool.

More about pssh

pssh is a command line tool for executing ssh in parallel on some hosts. It provides specialties includes:

1. Sending input to all of the processes
2. Inputting a password to ssh
3. Saving output to files
4. IT/sysadmin taks automation such as patching servers
5. Timing out and more

Let us see how to install and use pssh on Linux and Unix-like system.