'\" t
.\"     Title: vercmp
.\"    Author: [see the "Authors" section]
.\" Generator: DocBook XSL Stylesheets vsnapshot <http://docbook.sf.net/>
.\"      Date: 2018-07-27
.\"    Manual: Pacman Manual
.\"    Source: Pacman 5.1.1
.\"  Language: English
.\"
.TH "VERCMP" "8" "2018\-07\-27" "Pacman 5\&.1\&.1" "Pacman Manual"
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.SH "NAME"
vercmp \- version comparison utility
.SH "SYNOPSIS"
.sp
\fIvercmp\fR [\-h] [\-\-help] <version1> <version2>
.SH "DESCRIPTION"
.sp
\fIvercmp\fR is used to determine the relationship between two given version numbers\&. It outputs values as follows:
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
< 0 : if ver1 < ver2
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
= 0 : if ver1 == ver2
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
> 0 : if ver1 > ver2
.RE
.sp
Version comparison operates as follows:
.sp
.if n \{\
.RS 4
.\}
.nf
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
.fi
.if n \{\
.RE
.\}
.sp
Additionally, version strings can have an \fIepoch\fR 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\&.
.sp
Keep in mind that the \fIpkgrel\fR 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 \fIpkgrel\fR\&.
.SH "OPTIONS"
.PP
\fB\-h, \-\-help\fR
.RS 4
Display summary of the available return codes\&. Must be the first option specified\&.
.RE
.SH "EXAMPLES"
.sp
.if n \{\
.RS 4
.\}
.nf
$ vercmp 1 2
\-1
.fi
.if n \{\
.RE
.\}
.sp
.if n \{\
.RS 4
.\}
.nf
$ vercmp 2 1
1
.fi
.if n \{\
.RE
.\}
.sp
.if n \{\
.RS 4
.\}
.nf
$ vercmp 2\&.0\-1 1\&.7\-6
1
.fi
.if n \{\
.RE
.\}
.sp
.if n \{\
.RS 4
.\}
.nf
$ vercmp 2\&.0 2\&.0\-13
0
.fi
.if n \{\
.RE
.\}
.sp
.if n \{\
.RS 4
.\}
.nf
$ vercmp 4\&.34 1:001
\-1
.fi
.if n \{\
.RE
.\}
.SH "SEE ALSO"
.sp
\fBpacman\fR(8), \fBmakepkg\fR(8), \fBlibalpm\fR(3)
.sp
See the pacman website at https://www\&.archlinux\&.org/pacman/ for current information on pacman and its related tools\&.
.SH "BUGS"
.sp
Bugs? You must be kidding; there are no bugs in this software\&. But if we happen to be wrong, send us an email with as much detail as possible to pacman\-dev@archlinux\&.org\&.
.SH "AUTHORS"
.sp
Current maintainers:
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
Allan McRae <allan@archlinux\&.org>
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
Andrew Gregory <andrew\&.gregory\&.8@gmail\&.com>
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
Dan McGee <dan@archlinux\&.org>
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
Dave Reisner <dreisner@archlinux\&.org>
.RE
.sp
Past major contributors:
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
Judd Vinet <jvinet@zeroflux\&.org>
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
Aurelien Foret <aurelien@archlinux\&.org>
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
Aaron Griffin <aaron@archlinux\&.org>
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
Xavier Chantry <shiningxc@gmail\&.com>
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
Nagy Gabor <ngaba@bibl\&.u\-szeged\&.hu>
.RE
.sp
For additional contributors, use git shortlog \-s on the pacman\&.git repository\&.
