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zerotrunc(8): add manpage

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Ori Bernstein 2021-01-16 16:17:27 -08:00
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.TH ZEROTRUNC 8
.SH NAME
zerotrunc \- truncate input on zero byte
.SH SYNOPSIS
.B aux/zerotrunc
.SH DESCRIPTION
.PP
.B Zerotrunc
copies input to output until reading a first zero byte or end-of-file.
.SH EXAMPLES
.B Zerotrunc
can be used to read metadata of Plan 9 image files, e. g.:
.IP
.EX
% aux/zerotrunc < /dev/window
.EE
.SH SOURCE
.B /sys/src/cmd/aux/zerotrunc.c
.SH "SEE ALSO"
.IR cat (1)