Return directory portion of pathname (POSIX)
dirname string
The dirname utility returns a portion of the string operand to standard output. The string operand represents a valid pathname whose format is:
The dirname utility writes the directory_pathname component to standard output.
If string is //, then // is returned. Any other string consisting entirely of slash characters causes a single slash to be returned.
You usually use the dirname utility inside command substitution marks, $(...), within shell procedures.
Command: | Output: |
---|---|
dirname . | . |
dirname .. | . |
dirname ../. | .. |
dirname /usr/src/prog.c | /usr/src |
dirname /usr/src/ | /usr |
dirname ...//[fred] | ... |
The dirname utility writes the directory name string derived from the command-line parameters to its standard output.