Узнать размеры директорий:
du -hs /var/* 88M /var/cache 8,0K /var/db 8,0K /var/empty 4,0K /var/games 822M /var/lib 4,0K /var/local 12K /var/lock 500M /var/log 0 /var/mail 4,0K /var/nis 4,0K /var/opt 4,0K /var/preserve 128K /var/run 50M /var/spool 4,0K /var/tmp 12G /var/www 4,0K /var/yp