To quote the split(1) man page: >SYNOPSIS > ../src/split [OPTION] [INPUT [PREFIX]] Note the reference to "../src/". Same thing with csplit(1).
This bug affects all programs in the textutils package. These are: cat, cksum, comm, csplit, cut, expand, fmt, fold, head, join, md5sum, nl, od, paste, pr, ptx, split, sort, sum, tac, tail, tr, tsort, unexpand, uniq and wc.
Thanks, fixed.