Shell and Terminal

Bash AliasesDefine persistent command shortcuts directly in ~/.bashrc and source them into your shell session.

Convert EPUB to PDF from the CLIConvert an EPUB ebook to PDF with Calibre's ebook-convert command, including a denser textbook-style layout.

Convert M4B Audiobook to MP3Convert an .m4b file to .mp3 with ffmpeg, keeping metadata and removing the video stream.

Linux Shell Line Editing ShortcutsCommon Bash and readline shortcuts for deleting, undoing, and moving through command-line text.

Running Scripts from the Current DirectoryWhy a bare script name fails with "command not found" and how to run a file with an explicit path like ./my-script.sh.