get_docopts.sh fails with "unrecognized option '--ignore-missing'"

[stephenchu]

On my macOS, it works; but on my linux, get_docopts.sh (from script) fails with:

Saving to: ‘docopts_linux_amd64’

100%[==================================================================================================================================================================================================================================================================================================================================>] 1,949,696   --.-K/s   in 0.04s

2021-11-19 14:51:33 (41.8 MB/s) - ‘docopts_linux_amd64’ saved [1949696/1949696]

docopts_linux_amd64: ELF 64-bit LSB executable, x86-64, version 1 (SYSV), statically linked, stripped
verifying sha256sum signature from https://github.com/docopt/docopts/releases/download/v0.6.3-rc2/sha256sum.txt ...
sha256sum: unrecognized option '--ignore-missing'
Try 'sha256sum --help' for more information.

› sha256sum --help
Usage: sha256sum [OPTION]... [FILE]...
Print or check SHA256 (256-bit) checksums.
With no FILE, or when FILE is -, read standard input.

  -b, --binary         read in binary mode
  -c, --check          read SHA256 sums from the FILEs and check them
      --tag            create a BSD-style checksum
  -t, --text           read in text mode (default)
  Note: There is no difference between binary and text mode option on GNU system.

The following four options are useful only when verifying checksums:
      --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-180-2.  When checking, the input
should be a former output of this program.  The default mode is to print
a line with checksum, a character indicating input mode ('*' for binary,
space for text), and name for each FILE.

GNU coreutils online help: <http://www.gnu.org/software/coreutils/>
For complete documentation, run: info coreutils 'sha256sum invocation'

› sha256sum --version
sha256sum (GNU coreutils) 8.22
Copyright (C) 2013 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://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.

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

› uname -a
Linux host.redacted.com 4.14.123-111.109.amzn2.x86_64 #1 SMP Mon Jun 10 19:37:57 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux

[Sylvain303]

hi @stephenchu,

According to https://lists.gnu.org/archive/html/coreutils-announce/2013-12/msg00000.html

sha256sum (GNU coreutils) 8.22 seems quite old.

I used --ignore-missing just because this make the code simpler.

which version and distribution of Linux it is?

Could you try those commands from both your system?

wget https://github.com/docopt/docopts/releases/download/v0.6.3-rc2/docopts_linux_amd64 -O docopts_linux_amd64
wget https://github.com/docopt/docopts/releases/download/v0.6.3-rc2/sha256sum.txt -O sha256sum.txt
grep docopts_linux_amd64 sha256sum.txt | sha256sum --check -

I could rewrite the code this way to make it more compatible with older Linux version.

Let me know if it works.

[Sylvain303]

hi @stephenchu

Did you have a chance to test the suggested command?
Could you also answer the question on which Linux platform it was failing?

Or you could close the issue, if it's not relevant anymore.