$ sudo du -h /tmp/
0   /tmp/.com.google.Chrome.QOfwwS
152K    /tmp/mozilla_laurent0
0   /tmp/lu16574o4nmh7.tmp
56K /tmp/skype-2608/DbTemp.
56K /tmp/skype-2608
8,0K    /tmp/mintUpdate
0   /tmp/skype-2270/DbTemp.
0   /tmp/skype-2270
0   /tmp/systemd-private-20d4d4c038024b40a94173aa6da91e43-rtkit-daemon.service-PXuVyK/tmp
0   /tmp/systemd-private-20d4d4c038024b40a94173aa6da91e43-rtkit-daemon.service-PXuVyK
0   /tmp/ssh-3iPtSc5ATVsV
0   /tmp/pulse-PKdhtXMmr18n
0   /tmp/hsperfdata_mdm
0   /tmp/icedteaplugin-mdm-Ykf6aX
0   /tmp/systemd-private-20d4d4c038024b40a94173aa6da91e43-colord.service-l54scp/tmp
0   /tmp/systemd-private-20d4d4c038024b40a94173aa6da91e43-colord.service-l54scp
0   /tmp/.Test-unix
0   /tmp/.font-unix
0   /tmp/.XIM-unix
0   /tmp/.ICE-unix
0   /tmp/.X11-unix
220K    /tmp/

$ df -h /tmp/
Filesystem      Size  Used Avail Use% Mounted on
tmpfs           1,0G  908M  117M  89% /tmp