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((Refimprove|date=September 2018))
((Lowercase|title=ptx))
((Infobox software
| name                   = ptx
| logo                   = 
| screenshot             = 
| screenshot size        = 
| caption                = 
| author                 = 
| developer              = 
| released               = 
| latest release version = 
| latest release date    = 
| operating system       = [[Unix]] and [[Unix-like]]
| platform               = [[Cross-platform]]
| genre                  = [[Command (computing)|Command]]
| license                = 
| website                = 
))
'''ptx''' is a [[Unix utility]], named after the ''[[permuted index]]'' algorithm which it uses to produce a  search or concordance  report in the [[Keyword in Context]] (KWIC) format. It is available on most Unix and Unix-like operating systems (e.g. [[Linux]], [[FreeBSD]]). The [[GNU]] implementation<ref>[https://www.gnu.org/software/coreutils/manual/html_node/ptx-invocation.html#ptx-invocation At www.gnu.org - The GNU Info entry for PTX using Gnu extensions]</ref> uses extensions that are more powerful than the older [[SysV]] implementation.
The command is available as a separate package for [[Microsoft Windows]] as part of the [[UnxUtils]] collection of [[Native (computing)|native]] [[Windows API|Win32]] [[porting|ports]] of common GNU Unix-like utilities.<ref>((Cite web|url=http://unxutils.sourceforge.net/|title=Native Win32 ports of some GNU utilities|website=unxutils.sourceforge.net))</ref>

There is also a  corresponding [[IBM mainframe]] utility which performs the same function. Permuted indexes are often used in such places as bibliographic or medical databases, documentation, [[thesaurus|thesauri]], or web sites to aid in locating entries of interest.

==See also==
* [[Concordancer]]

==References==
((Reflist))

((Core Utilities commands))

[[Category:Information retrieval systems]]
[[Category:Unix text processing utilities]]

((Unix-stub))

Pages transcluded onto the current version of this page (help):

Ptx (Unix) (edit)
Template:Ambox (view source) (template editor protected)
Template:Asbox (view source) (template editor protected)
Template:Asbox/styles.css (view source) (template editor protected)
Template:Cite web (view source) (protected)
Template:Core Utilities commands (edit)
Template:Find sources mainspace (view source) (template editor protected)
Template:Hlist/styles.css (view source) (protected)
Template:Infobox (view source) (template editor protected)
Template:Infobox software (view source) (template editor protected)
Template:Infobox software/simple (view source) (template editor protected)
Template:Lowercase (view source) (template editor protected)
Template:Lowercase title (view source) (template editor protected)
Template:Main other (view source) (protected)
Template:More citations needed (view source) (template editor protected)
Template:Navbox (view source) (template editor protected)
Template:Refimprove (view source) (template editor protected)
Template:Reflist (view source) (protected)
Template:Reflist/styles.css (view source) (protected)
Template:Template other (view source) (protected)
Template:Unix-stub (view source) (semi-protected)
Template:Wikidata (view source) (template editor protected)
Module:Arguments (view source) (protected)
Module:Asbox (view source) (template editor protected)
Module:Buffer (view source) (template editor protected)
Module:Category handler (view source) (protected)
Module:Category handler/blacklist (view source) (protected)
Module:Category handler/config (view source) (protected)
Module:Category handler/data (view source) (protected)
Module:Category handler/shared (view source) (protected)
Module:Check for unknown parameters (view source) (protected)
Module:Citation/CS1 (view source) (protected)
Module:Citation/CS1/COinS (view source) (protected)
Module:Citation/CS1/Configuration (view source) (protected)
Module:Citation/CS1/Date validation (view source) (protected)
Module:Citation/CS1/Identifiers (view source) (protected)
Module:Citation/CS1/Utilities (view source) (protected)
Module:Citation/CS1/Whitelist (view source) (protected)
Module:Citation/CS1/styles.css (view source) (protected)
Module:Find sources (view source) (template editor protected)
Module:Find sources/config (view source) (template editor protected)
Module:Find sources/links (view source) (template editor protected)
Module:Find sources/templates/Find sources mainspace (view source) (template editor protected)
Module:Infobox (view source) (template editor protected)
Module:Infobox/styles.css (view source) (template editor protected)
Module:InfoboxImage (view source) (template editor protected)
Module:Message box (view source) (protected)
Module:Message box/ambox.css (view source) (protected)
Module:Message box/configuration (view source) (protected)
Module:Namespace detect/config (view source) (protected)
Module:Namespace detect/data (view source) (protected)
Module:Navbar (view source) (protected)
Module:Navbar/configuration (view source) (protected)
Module:Navbar/styles.css (view source) (protected)
Module:Navbox (view source) (template editor protected)
Module:Navbox/configuration (view source) (template editor protected)
Module:Navbox/styles.css (view source) (template editor protected)
Module:Unsubst (view source) (protected)
Module:Wd (view source) (template editor protected)
Module:Wd/i18n (view source) (template editor protected)
Module:Yesno (view source) (protected)

Return to Ptx (Unix).

Retrieved from "https://en.wikipedia.org/wiki/Ptx_(Unix)"