NAME

       vercmp - version comparison utility

SYNOPSIS

       vercmp [-h] [--help] <version1> <version2>

DESCRIPTION

       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.

OPTIONS

       -h, --help
           Display summary of the available return codes. Must be the first option specified.

EXAMPLES

           $ 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

SEE ALSO

       pacman(8), makepkg(8), libalpm(3)

       See the pacman website at https://archlinux.org/pacman/ for current information on pacman
       and its related tools.

BUGS

       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.

AUTHORS

       Current maintainers:

       •   Allan McRae <allan@archlinux.org>

       •   Andrew Gregory <andrew.gregory.8@gmail.com>

       •   Eli Schwartz <eschwartz@archlinux.org>

       •   Morgan Adamiec <morganamilo@archlinux.org>

       Past major contributors:

       •   Judd Vinet <jvinet@zeroflux.org>

       •   Aurelien Foret <aurelien@archlinux.org>

       •   Aaron Griffin <aaron@archlinux.org>

       •   Dan McGee <dan@archlinux.org>

       •   Xavier Chantry <shiningxc@gmail.com>

       •   Nagy Gabor <ngaba@bibl.u-szeged.hu>

       •   Dave Reisner <dreisner@archlinux.org>

       For additional contributors, use git shortlog -s on the pacman.git repository.