I'd like to mount /tmp without fstab entry using tmp.mount
However on Ubuntu 20.04 LTS, it doesn't seem to work.
user@user-x1:~$ systemctl status tmp.mount Unit tmp.mount could not be found.user@user-x1:~$ sudo systemctl enable tmp.mount Failed to enable unit: Unit file tmp.mount does not exist.user@user-x1:~$ sudo systemctl cat tmp.mount No files found for tmp.mount.user@user-x1:~$ cat /usr/share/systemd/tmp.mount # SPDX-License-Identifier: LGPL-2.1+## This file is part of systemd.## systemd is free software; you can redistribute it and/or modify it# under the terms of the GNU Lesser General Public License as published by# the Free Software Foundation; either version 2.1 of the License, or# (at your option) any later version.[Unit]Description=Temporary Directory (/tmp)Documentation=https://systemd.io/TEMPORARY_DIRECTORIESDocumentation=man:file-hierarchy(7)Documentation=https://www.freedesktop.org/wiki/Software/systemd/APIFileSystemsConditionPathIsSymbolicLink=!/tmpDefaultDependencies=noConflicts=umount.targetBefore=local-fs.target umount.targetAfter=swap.target[Mount]What=tmpfsWhere=/tmpType=tmpfsOptions=mode=1777,strictatime,nosuid,nodev[Install]WantedBy=local-fs.targetuser@user-x1:~$ What's happening? Why does systemd say unit could not be found even though bash auto tabbing fills up tmp.mount and what's the simplest way to enable this tmpfs without any config?