SHA1SUM(1) - man page online | user commands

Compute and check SHA1 message digest.

February 2017
SHA1SUM(1)                                User Commands                                SHA1SUM(1)


sha1sum - compute and check SHA1 message digest


sha1sum [OPTION]... [FILE]...


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) 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.


Written by Ulrich Drepper, Scott Miller, and David Madore.


GNU coreutils online help: <> Report sha1sum translation bugs to <>
Copyright © 2016 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <>. This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law.


Full documentation at: <> or available locally via: info '(coreutils) sha1sum invocation'
GNU coreutils 8.25 February 2017 SHA1SUM(1)
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sha1sum(1) referred by cfv(1) | cksfv(1) | debsign(1) | dpkg-sig(1) | hashcash(1) | monit(1) | nettle-hash(1) | openvpn(8) | perl5140delta(1) | prelink(8) | tthsum(1)
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