A UNIX Command
basename: missing operand
Try `basename --help' for more information.
$basename /usr/include/math.h .
$basename /usr/include/math.h .h
$basename /usr/lib/libgccpp.so.1 .1
`basename' removes any leading directory components from NAME.
basename NAME [SUFFIX]
If SUFFIX is specified and is identical to the end of
NAME, it is removed from NAME as well. Note that since
trailing slashes are removed prior to suffix matching,
SUFFIX will do nothing if it contains slashes.
`basename' prints the result on standard output.
Together, `basename' and `dirname' are designed such that
if `ls "$name"' succeeds, then the command sequence `cd
"$(dirname "$name")"; ls "$(basename "$name")"' will,
too. This works for everything except file names
containing a trailing newline.
POSIX allows the implementation to define the results if
NAME is empty or `//'. In the former case, GNU
`basename' returns the empty string. In the latter case,
the result is `//' on platforms where // is distinct from
/, and `/' on platforms where there is no difference.