SHA224SUM(1)

📦
version 9.10 · 5 versions
, in ubuntu stonking

💖 SHA224SUM 💖

okay bestie, so this is sha224sum from section 1 (User Commands) of the manual — aka the girl who computes and checks SHA224 message digests. she's a legacy interface to the cksum utility, and she's been holding it down. let's get into it. ✨

✨ NAME ✨

sha224sum — compute and check SHA224 message digest 🫶

🌸 SYNOPSIS 🌸

sha224sum [OPTION]... [FILE]...

🦋 DESCRIPTION 🦋

she prints or checks SHA224 (224-bit) checksums, periodt. she's the legacy interface to the cksum utility, and yes she still eats.

no cap: if you give her no FILE, or if FILE is -, she reads from standard input. 💅

🎀 the options 🎀

  • -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

🫶 and the classic duo:

  • --help — display this help and exit
  • --version — output version information and exit

the sums are computed as described in RFC 3874, fr fr. when checking, the input should be a former output of this program — like, don't just go handing her random text, she will clock it. 🙈

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.

heads up bestie: there is no difference between binary mode and text mode on GNU systems. iconic behavior honestly. 🌈

👑 AUTHOR 👑

Written by Ulrich Drepper, Scott Miller, and David Madore. legends, we thank them. 🎀

🐛 REPORTING BUGS 🐛

found a bug? don't be shy, tell the girlies:

🔥 SEE ALSO 🔥

full documentation https://www.gnu.org/software/coreutils/sha224sum — or available locally via: info '(coreutils) sha2 utilities'

Packaged by Ubuntu (9.10-1ubuntu2) Copyright © 2026 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.

k bye bestie 💖 this was GNU coreutils 9.10, dated August 2026, and she's literally the moment. go checksum something. no cap. ✨💅🦋

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