Catalina: /usr/sbin/accept command not found
Prior to macOS Catalina the accept command was a symlink to cupsaccept.  So in macOS Catalina, use:

/usr/sbin/cupsaccept




In macOS Mojave, in Terminal:

$ which accept
/usr/sbin/accept
$ ls -l /usr/sbin/accept
lrwxr-xr-x  1 root  wheel  10 Sep  7 21:22 /usr/sbin/accept -&gt; cupsaccept
$ 


In macOS Catalina, in Terminal:

% which cupsaccept
/usr/sbin/cupsaccept
%