By default on cpanel server /var/tmp is only 512MB which in most cases is too small. Increase and secure it so you don't need to worry about it anymore.
nano /scripts/securetmp
Change:
my $tmpdsksize = 512000; # Must be larger than 250000
to
my $tmpdsksize = 2097152; # Must be larger than 250000
umount -l /tmp
umount -l /var/tmp
rm -fv /usr/tmpDSK
/scripts/securetmp
All done.
