XDM (display manager)

{{Hatnote|This article is about the X Display Manager. XDM also refers to the XML data model used in XPath 2.0, XSLT 2.0, and XQuery.}}

{{Infobox software

| name = XDM

| title = XDM

| logo =

| logo caption =

| logo_size =

| logo_alt =

| screenshot = Xdm Screenshot.png

| caption = A screenshot of an XDM login screen

| screenshot_size = 350px

| screenshot_alt =

| collapsible =

| author = Keith Packard

| developer = X.Org Foundation

| released = {{Start date and age|1988|10}}

| discontinued =

| latest release version = {{wikidata|property|preferred|references|edit|Q30339330|P348|P548=Q2804309}}

| latest release date = {{start date and age|{{wikidata|qualifier|preferred|single|Q30339330|P348|P548=Q2804309|P577}}}}

| latest preview version = {{wikidata|property|preferred|references|edit|Q30339330|P348|P548=Q51930650}}

| latest preview date = {{wikidata|qualifier|preferred|single|Q30339330|P348|P548=Q51930650|P577}}

| programming language = C, C++

| operating system =

| platform =

| size =

| language =

| language count =

| language footnote =

| genre = X display manager

| license = MIT License

| alexa =

| website =

| standard =

| AsOf =

}}

The X Display Manager (XDM) is the default display manager for the X Window System. It is a bare-bones X display manager. It was introduced with X11 Release 3 in October 1988, to support the standalone X terminals that were just coming onto the market. It was written by Keith Packard.

Functions

XDM is used to boot an X.org based desktop environment.{{Cite web |last=Impson |first=Jeremy |date=2002-01-01 |title=VNC, Transparently |url=https://www.linuxjournal.com/article/5499 |access-date=2024-05-13 |website=www.linuxjournal.com}} It can control a display directly or indirectly in order to start an X session and supports remote login.{{Cite book |last1=Anderson |first1=Robin |url=https://books.google.com/books?id=pO6rRW2736AC&dq=%22XDM%22+display+manager&pg=PA451 |title=Unix Unleashed |last2=Johnston |first2=Andy |date=2002 |publisher=Sams Publishing |isbn=978-0-672-32251-8 |language=en}} XDM is initialized on system startup.{{Cite web |last=Edward |first=Robert |date=2024-03-18 |title=What Are Display Managers and How Do They Work? |url=https://www.baeldung.com/linux/display-managers-explained |access-date=2024-05-13 |website=Baeldung}}

It can be edited through the use of a configuration file, modules, or scripts.{{Cite book |last1=Quercia |first1=Valerie |url=https://books.google.com/books?id=ey_58UlP7QYC&dq=%22XDM%22+display+manager&pg=PA562 |title=X Users Guide Motif R5: Motif Edition |last2=O'Reilly |first2=Tim |date=1993 |publisher="O'Reilly Media, Inc." |isbn=978-1-56592-015-6 |language=en}}{{Cite book |last=Barkakati |first=Naba |url=https://books.google.com/books?id=xBANKuFJWtUC&dq=%22XDM%22+display+manager&pg=PA251 |title=Red Hat Fedora Linux Secrets |date=2005-09-19 |publisher=John Wiley & Sons |isbn=978-0-471-77492-1 |language=en}} The configuration file is usually found in /usr/lib/X11/xdm/xdm-config.{{Cite book |last=Levi |first=Bozidar |url=https://books.google.com/books?id=KRDNBQAAQBAJ&dq=%22XDM%22+display+manager&pg=PA549 |title=UNIX Administration: A Comprehensive Sourcebook for Effective Systems & Network Management |date=2002-05-29 |publisher=CRC Press |isbn=978-1-4200-0003-0 |language=en}}

History

XDM is one of the earliest display managers for Linux. It was developed by Keith Packard after he joined the X Consortium due to his frustration using a text-based environment to try and configure X.{{Cite web |last=O'Neal |first=Miles |date=1996-07-10 |title=Taming The X Display Manager |url=http://www.rru.com/~meo/pubsntalks/xrj/xdm.html |access-date=2024-05-13 |website=www.rru.com}}

XDM is available but unused on most systems because of its rudimentary nature.{{Cite web |last=Gerganov |first=Hiks |date=2024-03-18 |title=Linux Display Managers (LightDM, SLiM, XDM, GDM, SDDM, KDM, Ly): Install and Uninstall Guide |url=https://www.baeldung.com/linux/display-managers-install-uninstall |access-date=2024-05-13 |website=Baeldung}} Desktop environments released afterwards tended to include their own display manager, such as dtlogin on CDE.

XDM (display manager)

Functions

History

See also

References

Further reading