Filesystem           1K-blocks      Used Available Use% Mounted on
/dev/sda2             58134488  22414400  32790236  41% /
none                   1022444       656   1021788   1% /dev
none                   1029068       212   1028856   1% /dev/shm
none                   1029068       776   1028292   1% /var/run
none                   1029068         4   1029064   1% /var/lock
/dev/sda4             82098252  58824288  19136424  76% /opt