dirname − strip last component from file name
dirname [OPTION] NAME...
NAME with its last non−slash component and trailing
slashes removed; if NAME contains no /’s, output
’.’ (meaning the current directory).
end each output line with NUL, not newline
display this help and exit
output version information and exit
dirname dir1/str dir2/str
−> "dir1" followed by "dir2"
Written by David MacKenzie and Jim Meyering.
© 2018 Free Software Foundation, Inc. License GPLv3+:
GNU GPL version 3 or later
This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law.
or available locally via: info '(coreutils) dirname invocation'