SHA1SUM(1) User Commands SHA1SUM(1)
NAME
 sha1sum - compute and check SHA1 message digest
SYNOPSIS
 sha1sum [OPTION]... [FILE]...
DESCRIPTION
 Print or check SHA1 (160-bit) checksums.
 With no FILE, or when FILE is -, read standard input.
 -b, --binary
 read in binary mode
 -c, --check
 read SHA1 sums from the FILEs and check them
 --tag create a BSD-style checksum
 -t, --text
 read in text mode (default)
 -z, --zero
 end each output line with NUL, not newline, and disable file
 name escaping
 The following five options are useful only when verifying checksums:
 --ignore-missing
 don't fail or report status for missing files
 --quiet
 don't print OK for each successfully verified file
 --status
 don't output anything, status code shows success
 --strict
 exit non-zero for improperly formatted checksum lines
 -w, --warn
 warn about improperly formatted checksum lines
 --help display this help and exit
 --version
 output version information and exit
 The sums are computed as described in FIPS-180-1. When checking, the
 input should be a former output of this program. The default mode is
 to print a line with checksum, a space, a character indicating input
 mode ('*' for binary, ' ' for text or where binary is insignificant),
 and name for each FILE.
 Note: There is no difference between binary mode and text mode on GNU
 systems.
BUGS
 Do not use the SHA-1 algorithm for security related purposes. Instead,
 use an SHA-2 algorithm, implemented in the programs sha224sum(1),
 sha256sum(1), sha384sum(1), sha512sum(1), or the BLAKE2 algorithm, im-
 plemented in b2sum(1)
AUTHOR
 Written by Ulrich Drepper, Scott Miller, and David Madore.
REPORTING BUGS
 GNU coreutils online help: <https://www.gnu.org/software/coreutils/>
 Report any translation bugs to <https://translationproject.org/team/>
COPYRIGHT
 Copyright (C) 2020 Free Software Foundation, Inc. License GPLv3+: GNU
 GPL version 3 or later <https://gnu.org/licenses/gpl.html>.
 This is free software: you are free to change and redistribute it.
 There is NO WARRANTY, to the extent permitted by law.
SEE ALSO
 Full documentation <https://www.gnu.org/software/coreutils/sha1sum>
 or available locally via: info '(coreutils) sha1sum invocation'
GNU coreutils 8.32 February 2024 SHA1SUM(1)