BASENAME(1)                      User Commands                     BASENAME(1)

NAME
       basename - strip directory and suffix from filenames

SYNOPSIS
       basename NAME [SUFFIX]
       basename OPTION

DESCRIPTION
       Print  NAME with any leading directory components removed.  If specified, also remove
       a trailing SUFFIX.

       --help display this help and exit

       --version
              output version information and exit

EXAMPLES
       basename /usr/bin/sort
              Output "sort".

       basename include/stdio.h .h
              Output "stdio".

echo "$index" | cut -d"/" -f4

echo ${file##*/}

#!/bin/ksh

a="/a/b/c"

file=${a##*/}
dir=${a%/*}

echo "a->[${a}] dir->[$dir] file->[${file}]"