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One of the myths surrounding the Linux operating system is that you have to run all sorts of complicated commands to get anything done. Although that may have been the case some time ago, it’s no longer a reality.
You could go your entire life with Linux and never run a single command. That’s how far the Linux desktop has come over the years.
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However, for some users, the power offered by the Linux CLI (Command Line Interface) can be enticing. And, as someone who’s used Linux for decades, I still revert back to the command line for certain things.
That’s because the CLI can be really efficient. Case in point, there are two features you should know about that make using the Linux command line even easier: Tab completion and history. Let me explain each of these.
How to use tab completion
What you’ll need: The only thing you’ll need for this is a running instance of Linux. It doesn’t matter what distribution you use because both of these features are found in all flavors of the open-source operating system.
Let’s say you know there’s a command you need to run but can’t remember its name. You know it starts with sys, but that’s all you can remember.
Trying to remember the systemctl command is easier with tab completion. Screenshot by Jack Wallen/ZDNET
Even better, you don’t have to type out the entire command. Say, for example, the command you were looking for was systemctl. You could type systemc, hit Tab, and the remainder of the command will be automatically filled out.
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This little trick works better if there aren’t as many commands that start with system (because to get it to work for systemctl you have to type all but the final two letters. For example, if you use Samba (for folder shares across your network), you could type smbc and hit Tab to have the entire smbcontrol command completed for you.
How to use command history
1. Scroll through your command history
Do you remember the last command you typed? If it was a complicated command, you might not want to have to type it again. To avoid that, open your terminal window and hit the up arrow on your keyboard. What you should see is the last command you ran. Hit the up arrow again and you’ll see the command before that. Keep hitting the up arrow on your keyboard and you’ll go through the entire saved history of the commands you’ve issued.
2. Run a command from your history
When you find the command you want to run, stop on it and hit Enter on your keyboard. That command will run as though you just typed it. This trick comes in very handy when you either don’t feel like typing complicated commands or you can’t remember the exact command you’d previously run.
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To this day, I use both of these tricks with Linux and they never fail to make using the command line a bit easier. Once you start using these handy helpers, you’ll be less fearful of using the Linux CLI.
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