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SUM(1L) SUM(1L)
NAME
sum - checksum and count the blocks in a file
SYNOPSIS
sum [-rs] [--sysv] [--help] [--version] [file...]
DESCRIPTION
This manual page documents the GNU version of sum. sum
computes a 16-bit checksum for each named file, or the
standard input if none are given or when a file named `-'
is given. It prints the checksum for each file along with
the number of blocks in the file (rounded up). By default
each corresponding file name is also printed if at least
two arguments are specified. With the --sysv option, cor-
responding file name are printed when there is at least
one file argument. By default, the GNU sum computes
checksums using an algorithm that is compatible with the
BSD sum and prints file sizes in units of 1K blocks.
OPTIONS
-r Use the default (BSD compatible) algorithm. This
option is included for compatibility with the Sys-
tem V sum. Unless the -s option was also given, it
has no effect.
-s, --sysv
Compute checksums using an algorithm that is com-
patible with the one the System V sum uses by
default and print file sizes in units of 512-byte
blocks instead of 1K.
--help Print a usage message and exit with a non-zero sta-
tus.
--version
Print version information on standard error then
exit.
FSF GNU Text Utilities 1