Basename

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basename is a standard UNIX computer program. When basename is given a pathname, it will delete any prefix up to the last slash ('/') character and return the result. basename is described in the Single UNIX Specification and is primarily used in shell scripts.

Usage[edit]

The Single UNIX Specification specification for basename is.

basename string [suffix]
string
A pathname
suffix
If specified, basename will also delete the suffix.

Example[edit]

$ basename /home/jsmith/base.wiki 
base.wiki
$ basename /home/jsmith/base.wiki .wiki
base

Performance[edit]

Since basename accepts only one operand, its usage within the inner loop of shell scripts can be detrimental to performance. Consider

while read file; do
  basename "$file" ;
done < some-input

The above excerpt would cause a separate process invocation for each line of input. For this reason, shell substitution is typically used instead

echo "${file##*/}";

See also[edit]

External links[edit]