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https://github.com/moparisthebest/pacman
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ab07dfdeb9
Signed-off-by: Jason St. John <jstjohn@purdue.edu> Signed-off-by: Allan McRae <allan@archlinux.org>
80 lines
1.5 KiB
Plaintext
80 lines
1.5 KiB
Plaintext
/////
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vim:set ts=4 sw=4 syntax=asciidoc noet spell spelllang=en_us:
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/////
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vercmp(8)
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=========
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Name
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----
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vercmp - version comparison utility
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Synopsis
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--------
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'vercmp' <version1> <version2>
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Description
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-----------
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'vercmp' is used to determine the relationship between two given version
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numbers. It outputs values as follows:
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* < 0 : if ver1 < ver2
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* = 0 : if ver1 == ver2
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* > 0 : if ver1 > ver2
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Version comparison operates as follows:
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Alphanumeric:
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1.0a < 1.0b < 1.0beta < 1.0p < 1.0pre < 1.0rc < 1.0 < 1.0.a < 1.0.1
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Numeric:
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1 < 1.0 < 1.1 < 1.1.1 < 1.2 < 2.0 < 3.0.0
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Additionally, version strings can have an 'epoch' value defined that will
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overrule any version comparison, unless the epoch values are equal. This is
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specified in an `epoch:version-rel` format. For example, `2:1.0-1` is always
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greater than `1:3.6-1`.
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Keep in mind that the 'pkgrel' is only compared if it is available on both
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versions given to this tool. For example, comparing `1.5-1` and `1.5` will
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yield 0; comparing `1.5-1` and `1.5-2` will yield < 0 as expected. This is
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mainly for supporting versioned dependencies that do not include the 'pkgrel'.
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Options
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-------
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*-h, \--help*::
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Display syntax for the given operation. If no operation was supplied,
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then the general syntax is shown.
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Examples
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--------
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$ vercmp 1 2
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-1
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$ vercmp 2 1
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1
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$ vercmp 2.0-1 1.7-6
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1
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$ vercmp 2.0 2.0-13
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0
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$ vercmp 4.34 1:001
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-1
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Configuration
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-------------
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There is none.
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See Also
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--------
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linkman:pacman[8], linkman:makepkg[8], linkman:libalpm[3]
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include::footer.txt[]
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