I have a debian wheezy server up, I would like to free some space on rootfs but can't guess how...
debian:~# df -h
File system Dim. Usati Dispon. Uso% Montato su
rootfs 322M 213M 93M 70% /
udev 10M 0 10M 0% /dev
tmpfs 800M 228K 800M 1% /run
/dev/mapper/debian-root 322M 213M 93M 70% /
tmpfs 5,0M 0 5,0M 0% /run/lock
tmpfs 368M 11M 339M 3% /tmp
tmpfs 1,6G 0 1,6G 0% /run/shm
/dev/mapper/debian-home 519G 16G 477G 4% /home
/dev/mapper/debian-tmp 368M 11M 339M 3% /tmp
/dev/mapper/debian-usr 4,6G 1,2G 3,2G 28% /usr
/dev/mapper/debian-var 2,8G 1,6G 1,1G 61% /var