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bcalc.1
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.\" ========================================================================
.\"
.IX Title "BCALC 1"
.TH BCALC 1 "2018-03-31" "perl v5.22.1" "User Contributed Perl Documentation"
.\" For nroff, turn off justification. Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
.if n .ad l
.nh
.SH "NAME"
bcalc \- Bitrate\-speed\-size calculator
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
bcalc [options] \s-1SIZE SIZE_UNIT\s0 @ \s-1SPEED SPEED_UNIT\s0
.PP
or
.PP
bcalc [options] \s-1DURATION DURATION_UNIT\s0 @ \s-1SPEED SPEED_UNIT\s0
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
Calculate the time it takes to transfer files of a given size at a given speed.
Or calculates the resulting size for a given duration and bitrate.
.PP
The spaces between arguments are optional.
.SH "SIZE UNITS"
.IX Header "SIZE UNITS"
In size units, an uppercase B means Bytes (8 bits). A lowercase b means bits.
The size can be prefixed with a one-letter or full unit name. The following
are valid size units:
.PP
.Vb 5
\& b or bits
\& B or Bytes
\& kb or kilobits
\& kB or kilobytes
\& etc. with Mb, MB, Gb, GB, Tb, TB
.Ve
.PP
The greatest recognize size unit is TeraBytes. That should be enough for a couple
of years...
.SH "SPEED UNITS"
.IX Header "SPEED UNITS"
Speed units are the same as size untis, suffixed with \*(L"ps\*(R" (per second). For example:
.PP
.Vb 1
\& bps, Mbps, MBps Megabytesps, ...
.Ve
.SH "DURATION UNITS"
.IX Header "DURATION UNITS"
Valid duration units are:
.PP
.Vb 3
\& s or sec or seconds
\& m or mn or minutes
\& h or hours
.Ve
.SH "OPTIONS"
.IX Header "OPTIONS"
.IP "\fB\-?\fR or \fB\-h\fR" 8
.IX Item "-? or -h"
Print a brief help message and exit.
.IP "\fB\-\-help\fR" 8
.IX Item "--help"
Print the manual page and exit.
.IP "\fB\-v\fR or \fB\-\-verbose\fR" 8
.IX Item "-v or --verbose"
Print details of conversions done
.IP "\fB\-d\fR or \fB\-\-debug\fR" 8
.IX Item "-d or --debug"
Print even more details of argument analysis and conversions
.SH "EXAMPLES"
.IX Header "EXAMPLES"
The following all print out the same result:
.PP
.Vb 6
\& bcalc 7 GB @ 90 KBps
\& bcalc 7GB@90KBps
\& bcalc 7 Giga bytes @ 90Kilobytesps
\& bcalc 7 Giga bytes @ 90Kilobytespersecond
\& bcalc 7 Giga bytes @ 90 Kilobytes per second
\& bcalc 7 G bytes @ 90 Kilobytes per second
\&
\& = 21.60 hours
.Ve
.PP
Or calculate size from duration:
.PP
.Vb 1
\& bcalc 1mn @ 120Mbps
\&
\& bcalc 1h @ 120Mbps
.Ve
.ie n .SH "CHANGES 0.32 : clearer warning if speed_unit not found 0.3 : accept ""pm"" for ""per minute"" as in 6GBpm"
.el .SH "CHANGES 0.32 : clearer warning if speed_unit not found 0.3 : accept ``pm'' for ``per minute'' as in 6GBpm"
.IX Header "CHANGES 0.32 : clearer warning if speed_unit not found 0.3 : accept pm for per minute as in 6GBpm"
.SH "AUTHOR"
.IX Header "AUTHOR"
mi dot deb at alma dot ch, 2010\-2013,2018