5 useful terminal commands and how to launch them from your ruby program

Here are some terminal commands I recently learnt. They’ve proven quite useful (or just entertaining) on my Mac.

This command terminates your running processes. In case you’ve ever been wondering what on earth is slowing your computer down so much. This is how to do task manager in your terminal. But before we can terminate, we must find. Run ps -ax to list all running processes.

Typing in this command returns the current date, time and timezone. That seems simple enough, so I won’t get deeper into it.

Ping will help you determine if a certain site is up and running. Run ping, followed by the website url address (or IP address) and you’ll “ping” it endlessly until your cancel the process with ctrl+c. If you want it to ping the site only n times, pass it the flag of -c, followed by the n. Like this: ping -c 10 whitehouse.gov . Might become more useful if you have your own websites or web applications running, and you need to verify if they’re up.

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