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https://github.com/moparisthebest/pacman
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30d978a966
We had this interesting set of facts conundrum, according to vercmp
return values:
2.0a < 2.0
2.0 < 2.0.a
2.0a == 2.0.a
This introduces a code change that ensures '2.0a < 2.0.a' as would be
expected by the first two comparisons. Unfortunately this stays us a bit
further from upstream RPM code, but those are the breaks (in RPM, the
versions involving 'a' do in fact compare the same, but they are both
greater than the bare '2.0').
Signed-off-by: Dan McGee <dan@archlinux.org>
72 lines
1.2 KiB
Plaintext
72 lines
1.2 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 comparsion 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 comparsion 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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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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