You can show the number of free inodes on your linux server using the command df -i.
# servera: df -i
Filesystem Inodes IUsed IFree IUse% Mounted on
/dev/md0 524288 93984 430304 18% /
/dev/md2 23642112 1321438 22320674 6% /applications
/dev/md1 66264 48 66216 1% /boot
none 499388 1 499387 1% /dev/shm
