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Vim (Vi IMproved), a command-line text editor, provides several modes for different kinds of text manipulation. Pressing i in normal mode enters insert mode. Pressing <Esc> goes back to normal mode, which enables the use of Vim commands. See also: vimdiff, vimtutor, nvim. More information: <https://www.vim.org>.
Move and rename files in bulk. More information: <https://manned.org/mmv.1>.
FTP-like client to access SMB/CIFS resources on servers. More information: <https://manned.org/smbclient>.
Macro processor. More information: <https://www.gnu.org/software/m4>.
List and change kernel runtime variables. More information: <https://manned.org/sysctl.8>.
Makes FIFOs (named pipes). More information: <https://www.gnu.org/software/coreutils/mkfifo>.
Manage the pre-formatted manual page database. More information: <https://man7.org/linux/man-pages/man8/mandb.8.html>.
Download videos from YouTube and other websites. More information: <http://rg3.github.io/youtube-dl/>.