Email::MessageID (3pm) - Generate world unique message-ids.
gethostid (2)        - get or set the unique identifier of the current host
gethostid (3)        - get or set the unique identifier of the current host
git-patch-id (1)     - Compute unique ID for a patch
mkdtemp (3)          - create a unique temporary directory
mkostemp (3)         - create a unique temporary file
mkostemps (3)        - create a unique temporary file
mkstemp (3)          - create a unique temporary file
mkstemp (3p)         - make a unique filename
mkstemps (3)         - create a unique temporary file
mktemp (3)           - make a unique temporary filename
mktemp (3p)          - make a unique filename (LEGACY)
scsi_id (8)          - retrieve and generate a unique SCSI identifier
sethostid (2)        - get or set the unique identifier of the current host
sethostid (3)        - get or set the unique identifier of the current host