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.TH TARSPLIT 1
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.SH NAME
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tarsplit, tarcat \- split a tar archive into archives under some size, or combine archives
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.SH SYNOPSIS
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.B tarsplit
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[
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.B -p
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.I prefix
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] [
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.B -s
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.I size
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] [
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.I file
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\&...
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]
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.PP
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.B tarcat
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[
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.I file
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\&...
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]
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.SH DESCRIPTION
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.I Tarsplit
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copies a
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.IR tar (1)
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archive from input
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.IR file (s)
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into a series of independent
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.I tar
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archives with names starting with
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.I prefix
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.RL ( ts.\&
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by default)
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and no larger than a fixed
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.I size
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(512MB by default).
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This can be useful when copying large archives onto
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fixed-size storage media such as CDs or DVDs.
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.PP
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.I Tarsplit
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prints a list on standard output
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of the resulting archive names, and the first and last member names in each,
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to assist finding particular members without recombining the archives.
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.PP
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.I Tarcat
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copies
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.IR tar (1)
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archives from input
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.IR file s
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and combines them into a single
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.I tar
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archive.
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It is the inverse of
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.IR tarsplit .
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.SH EXAMPLES
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Archive
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.B /adm
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and split the result.
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.IP
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.EX
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; tar c /adm | tarsplit -s 409600
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ts.00000: /adm/ ... /adm/brickdb/have/timeout/viaduct60
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ts.00001: /adm/brickdb/have/tls-log ... /adm/timezone/Australia_ACT
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ts.00002: /adm/timezone/Australia_Broken-Hill ... /adm/words
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; file ts.*
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ts.00000: posix tar archive
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ts.00001: posix tar archive
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ts.00002: posix tar archive
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.EE
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.PP
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Reassemble the original archive and check the tail end for completeness:
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.IP
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.EX
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; tarcat ts.* | tar t | tail -2
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\&./adm/whois
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\&./adm/words
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.EE
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.SH FILES
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.I prefixNNNNN
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output archives
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.SH SOURCE
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.B /sys/src/cmd/tarsplit
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.SH SEE ALSO
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.IR bsplit (1),
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.IR split (1)