What versions of UNIX will this run on?
The script is very simple and quite portable. It has been tested on macOS version 10.2.1 and SCO UnixWare version 7, and should run on most UNIX variants with little or no change. (If it runs but does not produce sensible results, the most likely reason would be that the formatting of /usr/include/sys differs from that expected. In such a case you would probably just have to tweak the script a little.)
I downloaded the script, now how do I install it?
Move the script to your favorite bin directory such as ~/bin or /usr/local/bin, rename it to whatever you want, and give it execute permission. For example: mkdir $HOME/bin; mv errno.sh $HOME/bin/errno; chmod +x $HOME/bin/errno
I’m having a problem downloading, installing or running errno; can you help?
If you are having a problem not addressed in this F.A.Q., we would like to hear about it. Please email us. We can’t promise a quick response, but we will try to address your problem as soon as we can get to it, either by amending the F.A.Q. or by making available a new version of the script.