For many, many years now when I want to browse a man page about something I’ll type man X into my terminal, substituting X for whatever it is I wish to learn about. Depending on the manual, it’s short and therefore easy to find what I want, or I am deep in the woods because I’m trying to find a specific flag that appears many times in a very long document. Woe is me if the flag switch is a bare letter, like x.

And let’s say it is x. Now I am searching with /x followed by n n n n n n n n N n n n n n. Obviously I’m not finding the information I want, the search is literal (not fuzzy, nor “whole word”), and even if I find something the manual pager might overshoot me because finding text will move the found line to the top of the terminal, and maybe the information I really want comes one or two lines above.

So… there HAS to be a better way, right? There has to be a modern, fast, easily greppable version to go through a man page. Does it exist?

P.S. I am not talking about summaries like tldr because I typically don’t need summaries but actual technical descriptions.

  • pr06lefs@lemmy.ml
    44·
    4 months ago

    Kind of off topic, but you know what would be cool? If you had an ‘man explain’ command that would define all the flags/args in a command, like:

    man explain rsync --append-verify --progress -avz -e "ssh -p 2222" root@$dip:/sdcard/DCIM/Camera newphonepix

    Would give you:

    rsync - a fast, versatile, remote (and local) file-copying tool
      --append-verify          --append w/old data in file checksum
      --progress               show progress during transfer
      --archive, -a            archive mode is -rlptgoD (no -A,-X,-U,-N,-H)
      --verbose, -v            increase verbosity
      --compress, -z           compress file data during the transfer
      --rsh=COMMAND, -e        specify the remote shell to use

    etc.

    • thingsiplay@beehaw.org
      11·
      4 months ago

      You can just grep the help output

      $ rsync --help 2>&1 | grep -E '^ *(--append-verify|--progress|--archive)'
--archive, -a            archive mode is -rlptgoD (no -A,-X,-U,-N,-H)
--append-verify          --append w/old data in file checksum
--progress               show progress during transfer

      So it should be possible to create a simple script to do that. Similarly one can output the man document as text to stdout, which in turn can be grepped. I have no grep command at hand to do this in a useful way:

      man grep | col -b
    • Majestix@lemmy.world
      6·
      4 months ago

      There is a Plugin for Zsh (ohmyzsh) that gives you that right in the shell. I use it all the time and rely on it. Don’t have the name on my mind though, sorry.

    • gomp@lemmy.ml
      6·
      4 months ago

      Here’s what I get in fish when I start writing a rsync command and hit tab to ask for completions:

      ❱ rsync --append-verify --progress -avz -
-0  --from0                               (All *from/filter files are delimited by 0s)  --delete                   (Delete files that don’t exist on sender)
-4  --ipv4                                                               (Prefer IPv4)  --delete-after         (Receiver deletes after transfer, not before)
-6  --ipv6                                                               (Prefer IPv6)  --delete-before         (Receiver deletes before transfer (default))
-8  --8-bit-output                          (Leave high-bit chars unescaped in output)  --delete-delay                 (Find deletions during, delete after)
[more lines omitted]