SHA1SUM(1) SHA1SUM(1) sha1sum - compute and check SHA1 message digest sha1sum []... []... Print or check SHA1 (160-bit) checksums. Legacy interface to the cksum utility. , -, . -b, --binary -c, --check --tag -t, --text () -z, --zero , : --ignore-missing --quiet --status , --strict - -w, --warn --help --version 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. . Do not use the MD5 algorithm for security related purposes. Instead, use an SHA-2, SHA-3, or BLAKE2 algorithm, implemented in the cksum(1) program. , . : bug-coreutils@gnu.org coreutils : : Copyright (C) 2026 Free Software Foundation, Inc. 3+: 3 . : . , . cksum(1) ,,info '(coreutils) sha1sum invocation'" ; 3 . . , - TODO <>. coreutils 9.11 2026 SHA1SUM(1)