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e9a910b33c
i currently use the output of sha512sum in several places of xbmk, which is a bit unreliable in case output changes. other cases where i use util outputs in variables are probably reliable, because i'm using mostly posix utilities in those. to mitigate this, i now import suckless sbase, which has a reasonable sha512sum implementation. *every* binary it builds is being placed in build.list, because i'll probably start using more of them. for example, i may start modifying the "date" implementation, adding the GNU-specific options that i need as mentioned on init.sh i'm importing it in util/ because the sha512sum util is needed for verifying project sources, so if sbase itself is a "project source", that means we can into a chicken and egg bootstrapping problem. this is sbase at revision: 055cc1ae1b3a13c3d8f25af0a4a3316590efcd48 Signed-off-by: Leah Rowe <leah@libreboot.org>
25 lines
360 B
Groff
25 lines
360 B
Groff
.Dd October 8, 2015
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.Dt CKSUM 1
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.Os sbase
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.Sh NAME
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.Nm cksum
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.Nd compute file checksum
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.Sh SYNOPSIS
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.Nm
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.Op Ar file ...
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.Sh DESCRIPTION
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.Nm
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calculates a cyclic redundancy check (CRC) of
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.Ar file
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according to
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.St -iso8802-3
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and writes it, the file size in bytes and path to stdout.
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.Pp
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If no
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.Ar file
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is given,
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.Nm
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reads from stdin.
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.Sh STANDARDS
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POSIX.1-2013.
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