Which Linux command or utility is simple, powerful, and surprisingly unknown to many people or used less often?

This could be a command or a piece of software or an application.

For example I’m surprised to find that many people are unaware of Caddy, a very simple web server that can make setting up a reverse proxy incredibly easy.

Another example is fzf. Many people overlook this, a fast command-line fuzzy finder. It’s versatile for searching files, directories, or even shell history with minimal effort.

  • gandalf_der_12te@discuss.tchncs.de
    16·
    6 days ago

    socat - connect anything to anything

    for example

    socat - tcp-connect:remote-server:12345

    socat tcp-listen:12345 -

    socat tcp-listen:12345 tcp-connect:remote-server:12345

  • friend_of_satan@lemmy.worldEnglish
    29·
    6 days ago

    Not powerful, but often useful, column -t aligns columns in all lines. EG

    $ echo {a,bb,ccc}{5,10,9999,888} | xargs -n3
a5 a10 a9999
a888 bb5 bb10
bb9999 bb888 ccc5
ccc10 ccc9999 ccc888
$ echo {a,bb,ccc}{5,10,9999,888} | xargs -n3 | column -t
a5      a10      a9999
a888    bb5      bb10
bb9999  bb888    ccc5
ccc10   ccc9999  ccc888
  • DigitalDilemma@lemmy.mlEnglish
    27·
    7 days ago

    yes

    The most positive command you’ll ever use.

    Run it normally and it just spams ‘y’ from the keyboard. But when one of the commands above is piped to it, then it will respond with ‘y’. Not every command has a true -y to automate acceptance of prompts and that’s what this is for.

  • toastal@lemmy.ml
    11·
    6 days ago

    netstat -tunl shows all open ports on the machine to help diagnose any firewall issues.

  • Count Regal Inkwell@pawb.social
    12·
    6 days ago

    batcat

    It’s like cat but better. Great for when you just want to look at the contents of a file, without loading a whole text editor.

    Oh also, tldr

    My procedure for learning how to use a cli command goes tldr page -> --help if the tldr fails to help me -> THEN the full manpage

  • Presi300@lemmy.worldEnglish
    16·
    7 days ago

    ddccontrol… it looks complicated on the surface but it’s really not and being able to control monitor brightness without fcking around in some garbage monitor OSD is a god sent and should be the standard

  • gandalf_der_12te@discuss.tchncs.de
    4·
    6 days ago

    nmap *your_local_ip_address*

    for example

    nmap 192.168.1.43/24 will show you what devices are connected to the local network, and what ports are open there. really useful, for example, when you forgot the address of your printer or raspi yet again.

    you can also use it to understand what ports on your computer are open from an attacker’s perspective, or simply to figure out what services are running (ssh service).