Install xterm with Homebrew

Project links

• Homepage

Commands and aliases

• koi8rxterm
• resize
• uxterm
• xterm

Project history

xterm predates the X Window System in a narrow but important sense. Thomas Dickey's FAQ preserves Jim Gettys' account that Mark Vandevoorde first wrote it in the summer of 1984 as a stand-alone terminal emulator for the DEC VAXstation 100, then retargeted it to X when X became the more useful path.

The early program accumulated work from Gettys and others: Bob McNamara's ANSI parser, Tektronix graphics support from Doug Mink at the Smithsonian Astrophysical Observatory, an X11 port by Loretta Guarino, and later X Consortium maintenance. That mixed authorship explains why xterm carries both terminal-emulation and early-workstation history.

Thomas E. Dickey began sustained xterm work in the mid-1990s, initially around color behavior, ncurses needs, and XFree86 integration. His project page describes xterm's terminal-description evolution from VT102-oriented behavior to VT220 and then VT420-oriented behavior, while the changelog records continuing patch-level maintenance into the 2020s.

Adoption history

xterm's adoption followed X11 itself. It became the standard terminal emulator shipped with X distributions, so Unix workstations, XFree86, X.Org, Cygwin/X, XQuartz-style setups, and Linux distributions inherited it as the plain X terminal even after desktop environments added newer terminal apps.

The larger adoption story is compatibility. Terminal applications, curses libraries, shell prompts, and title-setting helpers often target xterm-compatible behavior even when the actual emulator is rxvt, dtterm, GNOME Terminal, Konsole, iTerm2, or another descendant. This made xterm a de facto behavior spec as much as a package.

Dickey's upstream page links packages, historical source archives, the FAQ, control-sequence documentation, and the changelog, reflecting xterm's unusual status as an old X component still maintained as an independent upstream and still distributed by package managers.

How it is used

Users run `xterm` to open a shell or command in an X11 window; `uxterm` wraps xterm for Unicode locales; `koi8rxterm` targets KOI8-R environments; and `resize` reports terminal dimensions to shells. Options and X resources control fonts, colors, scrollback, geometry, titles, selections, and terminal modes.

Developers use xterm as a practical testbed for terminal behavior: cursor addressing, colors, alternate-screen behavior, title operations, UTF-8, terminfo capabilities, bracketed paste, and compatibility with old DEC and Tektronix expectations.

Why package nerds care

xterm matters because package history, protocol history, and terminal compatibility meet in one executable. Installing it is not just installing a terminal; it brings a long-lived X11 terminal behavior that many terminal programs and scripts already know how to speak.

It is also a maintenance case study. Rather than being replaced by a new framework, xterm survived by preserving old X and DEC behavior while adding color, Unicode, Xft fonts, newer DEC emulation, and safety controls around risky terminal operations.

Timeline

• 1984: Mark Vandevoorde writes the original VS100 terminal emulator during the summer X began, then retargets it to X.
• 1985: Doug Mink adds Tektronix-style graphics support for Smithsonian Astrophysical Observatory workflows using early X systems.
• 1987: X11-era development begins; Loretta Guarino ports xterm to X11 according to the FAQ's preserved authorship history.
• Early 1996: Thomas Dickey begins sustained xterm maintenance work around color, portability, and terminal-description correctness.
• 1996: XFree86-era patches move xterm toward fuller VT220-style behavior and updated termcap/terminfo descriptions.
• 2012: The preferred xterm terminal description shifts to a VT420-oriented basis, per Dickey's project history.
• 2020s: xterm remains maintained upstream with changelog entries and package-manager distribution across Unix-like systems.

Related projects

• X Window System and X.Org: the display-system lineage that made xterm a standard client.
• XFree86: the project through which much mid-1990s and early-2000s xterm work flowed.
• ncurses, termcap, and terminfo: terminal capability databases and libraries whose xterm entries evolved alongside the emulator.
• vttest: Thomas Dickey's related terminal test program.
• rxvt, kterm, hanterm, dtterm, GNOME Terminal, and Konsole: terminal emulators that intersect with xterm compatibility.

Sources

• https://github.com/ThomasDickey/xterm-snapshots
• https://invisible-island.net/xterm/
• https://invisible-island.net/xterm/ctlseqs/ctlseqs.html
• https://invisible-island.net/xterm/xterm.faq.html
• https://invisible-island.net/xterm/xterm.log.html