Linux Mounting / un-mounting directories related commands

To check for currently mounted partitions, use mount command without any arguments:
[root@badar /]# mount 
/dev/hda6 on / type ext3 (rw)
none on /proc type proc (rw)
usbdevfs on /proc/bus/usb type usbdevfs (rw)
/dev/hda1 on /boot type ext3 (rw)
/dev/hda2 on /data type ext3 (rw)
none on /dev/pts type devpts(rw,gid=5,mode=620)
none on /dev/shm type tmpfs (rw)
/dev/hda3 on /mnt/hda3 type vfat (rw)

You can also use the mounted files system table mtab to check for currently mounted partitions.
[root@badar /]# cat /etc/mtab
/dev/hda6 / ext3 rw 0 0
none /proc proc rw 0 0
usbdevfs /proc/bus/usb usbdevfs rw 0 0
/dev/hda1 /boot ext3 rw 0 0
/dev/hda2 /data ext3 rw 0 0
none /dev/pts devpts rw,gid=5,mode=620 0 0
none /dev/shm tmpfs rw 0 0
/dev/hda3 /mnt/hda3 vfat rw 0 0

Following command mounts the CD ROM drive in mount point  /mnt/cdrom
[root@badar /]# mount /dev/cdrom /mnt/cdrom

Following command mounts your VFAT partition, C: drive, in  /mnt/windir
[root@badar /]# mount -t vfat /dev/hda2 /mnt/windir

Following command mounts an NFS share /usr/data from the machine  to your local mount point  /mnt/cdrom:
[root@badar /]# mount –t nfs /mnt/cdrom

To unmount any mount point use the following command but the mount point must not be busy:
[root@badar /]# umount /mnt/cdrom


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