How can I run 2 commands simultanionsly?

[for.ggame.playing]

Hi there, I wander is it theoretically possible that I can execute 2 commands at the same time using scripts?
Say I want to ping 2 hosts at the same time, how do I do it?

 

[Phishfry]

Use an ampersand in between programs.

10 Useful Chaining Operators in Linux with Examples

Chaining of Linux commands means, combining several commands and making them execute based upon the behavior of the operator used in between them.

www.tecmint.com

Also you could open a second virtual terminal with ctl-alt-F2 and run commands on it at the same time.

 

[fender0107401]

Hi there, I wander is it theoretically possible that I can execute 2 commands at the same time using scripts?
Say I want to ping 2 hosts at the same time, how do I do it?

Google multi-thread.

 

[Jose]

FreshPorts -- net/fping: Quickly ping multiple hosts without flooding the network

A tool to quickly ping N number of hosts to determine their reachability without flooding the network. fping is different from ping in that you can specify any number of hosts on the command line, or specify a file containing the lists of hosts to ping. Instead of trying one host until...

www.freshports.org

 

[kpedersen]

In shell you run them with & (to background).
You then immediately store their PID (process ID) via the $! variable.
And then you can use wait to halt execution until that process is complete.

For more info, check out: https://linuxhint.com/wait_command_linux/

I used to be worried about juggling PIDs like this because the kernel *can* reuse PIDs and I might get unlucky. However I then realised that wait can only wait on child processes, avoiding the problem altogether.

For more info check out:

Bash: Is it possible to stop a PID from being reused?

Is it possible to stop a PID from being reused? For example if I run a job myjob in the background with myjob &, and get the PID using PID=$!, is it possible to prevent the linux system from re-

stackoverflow.com