Command Line Tools | Intro to the CLI Part 3

Command-line tools are programs run entirely through a shell, taking text input and returning text output, and they generally follow a structure consisting of a program name, action, options, and parameters. Built-in system utilities include date, time, diff, tar and gzip for archiving, grep for regular-expression searches, and pipes for connecting one command’s output to another’s input. The overview also covers networking and remote-access tools such as ping, cURL, SSH, and ssh-keygen, emphasizing secure management of public and private SSH keys. Command-line text editing options range from the powerful but complex Vim to the more approachable Nano and the stream editor sed for automated search-and-replace tasks. Additional tools can be installed through package managers such as Homebrew on macOS or APT and yum on Linux, which manage software and dependencies. Examples of installable utilities include Calc for calculations, Tree for directory views, ffmpeg for media conversion, ImageMagick for image manipulation, ddgr for terminal-based web searching, WP-CLI for WordPress administration, BackstopJS for visual regression testing, npm for JavaScript package management, and Git for version control, illustrating the CLI’s broad use in development, automation, system administration, and content processing.

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