ffmpeg

alsamixer

And on a more devops front k9s https://k9scli.io/

off the top of my head:

• vim
• git
• bash
• make
• whatever-compiler-im-using
• curl
• less
• grep

I have mostly replaced all command line stuff with Emacs, but there are still a few CLI utilities that I continue to use, whether I am in the CLI directly or whether I am using Emacs:

• tmux or screen (terminal multiplexing)
• bash (shell scripting)
• grep, sed (filtering, formatting)
• ps, pgrep, pkill (process control)
• ls, find, du (filesystem search)
• ssh, nc, rsync, sshfs, sftp (remote access, file transfer)
• tee, dd (pipe control)
• less, emacs, diff, patch, pandoc (text editing)
• man, apropos (manual)
• tar, gzip, bzip2, xz (archiving)
• hexdump, base64, basenc, sha256sum (data encoding, checksums)
• wget, curl, (HTTP client)
• dpkg, apt-get, guix (package management)
• mpv (media player)
• ldd, objdump, readelf (inspecting binary files)
• zfs (maintaining my backup filesystem)

• ranger and mc - both are file managers, and their approach is so different that I choose one of them I need at the moment depending on what do I want to do (mc for traditional file management, ranger for looking around the directory tree and peeking into files)
• htop, tmux - classics
• weechat, profanity - for my IM needs
• ripgrep - for searching through files
• magic-wormhole for file and ssh public key exchange
• mosh for when the network conditions aren’t ideal
• nmap to see if that machine I’ve connected into the network is up and what IP did it get
• bat for quick looking into files
• gdb, with mandatory gdb dashboard
• nvim for serious text and code editing, micro for more casual editing

argos-translate for offline machine language translation.

tmux & neovim for editing files and organizing the terminal displays.

asciinema for recording and playing back terminal sessions.

yt-dlp

I basically live in nvim. Being able to configure my editor in an actual programming language makes it so much more useful to me than vim could ever be.