CLEANNAME(1)CLEANNAME(1)NAMEcleanname - clean a path name
SYNOPSIScleanname [ -d pwd ] names ...
For each file name argument, cleanname, by lexical processing only,
prints the shortest equivalent string that names the same (possibly
hypothetical) file. It eliminates multiple and trailing slashes, and
it lexically interprets . and .. directory components in the name.
If the -d option is present, unrooted names are prefixed with pwd/