Bash 'type someCmd' : what means 'hashed'? (different outputs for 'type mkdir')
The difference is situational:
The first time bash executes an external utility in a given session by filename only (whether successfully or not), it remembers its full path for faster re-execution later (saving the need to look for the utility in all directories listed in the $PATH variable again).
This remembering (caching) is called hashing and happens implicitly via builtin hash.
Therefore, before mkdir is ever executed in a given session, type mkdir returns:
mkdir is /bin/mkdirAfter having executed mkdir at least once, type mkdir then reports:
mkdir is hashed (/bin/mkdir)You can tell bash to "forget" all remembered paths with hash -r, or selectively with hash -d <name>; just hash prints all currently hashed paths and their hit counts - see help hash.