basename will print NAME with any leading directory components removed. If specified, it will also remove a trailing SUFFIX (typically a file extention).
Get the name of the home folder:
$ basename ~
Extract the file name from the variable pathnamevar and store in the variable result using parameter expansion $( )
$ result=$(basename "$pathnamevar")
A script to rename file extensions:
#BatchRenameExt for file in *.$1; do mv $file `basename $file $1`.$2 done $ BatchRenameExt htm html