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 checksums 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.

       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,
       implemented 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) 2024 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
       cksum(1)

       Full documentation <https://www.gnu.org/software/coreutils/sha1sum>
       or available locally via: info '(coreutils) sha1sum invocation'

GNU coreutils 9.5                 March 2024                        SHA1SUM(1)