[rwmj]

  $ cat /usr/src/linux-headers-`uname -r`/include/uapi/asm-generic/errno.h | grep 90
  #define        EMSGSIZE        90        /* Message too long */

Nooo! errno from moreutils:

https://man.archlinux.org/man/errno.1

  $ errno 90
  EMSGSIZE 90 Message too long

or:

  $ errno -s "too long"
  E2BIG 7 Argument list too long
  ENAMETOOLONG 36 File name too long
  EMSGSIZE 90 Message too long

[mappu]

Microsoft have an Err.exe for Windows error codes too: https://learn.microsoft.com/en-us/windows/win32/debug/system...