.TH zpm-vercmp 8 2019-02-26 "ZPM 0.4"
.SH NAME
zpm-vercmp \- compare strings with version numbering
.SH SYNOPSIS
.B zpm vercmp \fR[\fB-q\fR] \fIstring1 string2\fR
.SH DESCRIPTION
\fBzpm-vercmp\fR compares its arguments, using
version numbering semantics.  It can operate in
test mode or search mode.  In search mode, activated with \-G or \-L
it will print the highest or lowest version string to stdout.
.PP
In test mode, it compares all the arguments, and prints '0' if they are all
equal, '-1' if they are in version order, and 1 if they are out of order.
Adjacent identical version strings are considered both equal and in order.
Additionally in test mode,
the process will exit 0 if the strings are all equal, 1 if the
strings are not in order, and 2 if they are in order.
.SH OPTIONS
.TP
\-q
write nothing to stdout.  The program will still exit with the
usual exit status
.TP
\-G
Print the largest argument version string found.
.TP
\-L
Print the smallest argument version string found.
.SH EXAMPLES
.PP
.nf
zpm-vercmp a b -> "-1"
.fi
.SH EXIT STATUS
.TP
0
if the strings are all equal
.TP
1
if the strings are not in version order
.TP
2
if the strings are in version order
.SH FILES
None
.SH ENVIRONMENT
None
.SH AUTHOR
Nathan Wagner
.SH SEE ALSO
zpm(8)