vercmp − 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.
−h, −−help
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
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? 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.
Current maintainers:
• Allan McRae <[email protected]>
• Andrew Gregory <[email protected]>
• Eli Schwartz <[email protected]>
• Morgan Adamiec <[email protected]>
Past major contributors:
• Judd Vinet <[email protected]>
• Aurelien Foret <[email protected]>
• Aaron Griffin <[email protected]>
• Dan McGee <[email protected]>
• Xavier Chantry <[email protected]>
• Nagy Gabor <[email protected]−szeged.hu>
• Dave Reisner <[email protected]>
For additional contributors, use git shortlog −s on the pacman.git repository.