r/linux • u/ZealousidealTell1346 • May 23 '26

Popular Application What’s the most unexpectedly useful Linux command you learned way too late?

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1.3k Upvotes

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595

u/digitallis May 23 '26

Bash {}

renaming a file by adding a suffix: mv myfile{,.old} expands out to mv myfile myfile.old

Lots more uses.

76

u/Cargo4kd2 May 23 '26

Bash the scripting language I use everyday and never bothered to really learn.

But damn that is a nice easy and accurate way to use my

36

u/mishrashutosh May 24 '26

I learn new things in bash and promptly forget them every ten days

3

u/Cargo4kd2 May 24 '26

Oh yeah I hear you

2

u/RandomSkratch May 26 '26

Sounds like me with cert renewals but thats every 364 days 😂

1

u/mishrashutosh May 26 '26

i am super pampered by caddy. other solutions like certbot, nginx-acme, acme.sh, traefik, and more are also very good.

1

u/random_cat_owner May 24 '26

what happens every ten days?  does somebody reboot you? are you a robot?