basename—with a directory name delivers portions of the pathname
basename string [ suffix ]
dirname string
basename deletes any prefix ending in / (forward slash) and the suffix (if present in string) from string, and prints the result on the standard output.
Example A.6.
1 basename /usr/local/bin
2 scriptname="`basename $0`"
EXPLANATION
Strips off the prefix /usr/local/ and displays bin. Assigns just the name of the script, $0, to the variable scriptname.
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