version comparison utility
vercmp [-h] [--help] <version1> <version2>
vercmp is used to determine the relationship between two given version numbers. It outputs values as follows:
< 0 : if ver1 < ver2
= 0 : if ver1 == ver2
> 0 : if ver1 > ver2
Version comparison operates as follows:
Alphanumeric: 1.0a < 1.0b < 1.0beta < 1.0p < 1.0pre < 1.0rc < 1.0 < 1.0.a < 1.0.1 Numeric: 1 < 1.0 < 1.1 < 1.1.1 < 1.2 < 2.0 < 3.0.0
Additionally, version strings can have an epoch value defined that will overrule any version comparison, unless the epoch values are equal. This is specified in an epoch:version-rel format. For example, 2:1.0-1 is always greater than 1:3.6-1.
Keep in mind that the pkgrel is only compared if it is available on both versions given to this tool. For example, comparing 1.5-1 and 1.5 will yield 0; comparing 1.5-1 and 1.5-2 will yield < 0 as expected. This is mainly for supporting versioned dependencies that do not include the pkgrel.
Display summary of the available return codes. Must be the first option specified.
$ vercmp 1 2 -1
$ vercmp 2 1 1
$ vercmp 2.0-1 1.7-6 1
$ vercmp 2.0 2.0-13 0
$ vercmp 4.34 1:001 -1
Bugs? You must be kidding; there are no bugs in this software. But if we happen to be wrong, submit a bug report with as much detail as possible at the Arch Linux Bug Tracker in the Pacman section.
Allan McRae <email@example.com>
Andrew Gregory <firstname.lastname@example.org>
Eli Schwartz <email@example.com>
Morgan Adamiec <firstname.lastname@example.org>
Past major contributors:
Judd Vinet <email@example.com>
Aurelien Foret <firstname.lastname@example.org>
Aaron Griffin <email@example.com>
Dan McGee <firstname.lastname@example.org>
Xavier Chantry <email@example.com>
Nagy Gabor <firstname.lastname@example.org>
Dave Reisner <email@example.com>
For additional contributors, use git shortlog -s on the pacman.git repository.