GNU info on the following topics is available here:

• cmp: (diffutils)Invoking cmp. Compare 2 files byte by byte.
  diff: (diffutils)Invoking diff. Compare 2 files line by line.
  diff3: (diffutils)Invoking diff3. Compare 3 files line by line.
  patch: (diffutils)Invoking patch. Apply a patch to a file. ...
• Coreutils: Core GNU (file, text, shell) utilities.
  Common options: (coreutils)Common options.
  File permissions: (coreutils)File permissions. Access modes.
  Date input formats: (coreutils)Date input formats. ...
• DVI-to-Postscript: (dvips). Translating TeX DVI files to PostScript.
  afm2tfm: (dvips)Invoking afm2tfm. Making Type 1 fonts available to TeX.
  dvips: (dvips)Invoking Dvips. DVI-to-PostScript translator.
• Ed: The GNU line editor
• EpsPDF: Portable GUI- and command-line EPS/PS/PDF conversion
• Finding files: (find). Operating on files matching certain criteria.
• gpg: (gnupg1). OpenPGP encryption and signing tool (v1).
• grep: Print lines matching a pattern.
• grub-dev: The GRand Unified Bootloader Dev
• GRUB: The GRand Unified Bootloader
  grub-install: (grub)Invoking grub-install. Install GRUB on your drive
  grub-mkconfig: (grub)Invoking grub-mkconfig. Generate GRUB configuration
  grub-mkpasswd-pbkdf2: (grub)Invoking grub-mkpasswd-pbkdf2. ...
• Gzip: General (de)compression of files (lzw).
• Kpathsea: File lookup along search paths.
  kpsewhich: (kpathsea)Invoking kpsewhich. TeX file searching.
  mktexfmt: (kpathsea)mktex scripts. Format (fmt/base/mem) generation.
  mktexlsr: (kpathsea)Filename database. Update ls-R. ...
• Latex2man: Its Man-Page
• Maintaining Findutils: (find-maint). Maintaining GNU findutils
• mf2pt1: PostScript Type 1 fonts from Metafont source.
• Naming TeX fonts: (fontname). Filenames for TeX fonts.
• nano: Small and friendly text editor.
• RCS: GNU Revision Control System.
• RLuserman: The GNU readline library User's Manual.
• Screen: Full-screen window manager.
• sed: Stream EDitor.
• TeX Directories: (tds). A directory structure for TeX files.
• TeXdraw: A system for producing PostScript drawings from TeX.
• time: Run programs and summarize
  system resource usage.
• TL-build: (tlbuild). TeX Live configuration and development.
• Web2c: TeX, Metafont, and companion programs.
• Wget: Non-interactive network downloader.