strerror - calls library function strerror from command line.
I could not find anything in /bin, /usr/bin, etc (there is no man strerror.1), so I have created this.
$ strerror 9
Bad file descriptor
Universal binary (32-bit ppc/intel) is here. Unzip and copy to /usr/local/bin (or somewhere else).
Source is here.
cc -o strerror -arch i386 -arch ppc strerror.c
or for a version just for your machine:
cc -o strerror strerror.c
This is free software. I hope you will find it useful.