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Estimate space used by directory. du -sh dir

Go back to the previous folder cd –

Mount a Windows FAT partition. If it is an NTFS partion, use ‘ntfs’ instead of ‘fat’. Make sure that the…

Modify timestamp of a file or directory touch -t 0712250000 file #(YYMMDDhhmm)

Mount a windows network share in Linux using Samba mount -t smbfs -o username=user,password=pass //WinClient/share /mnt/share

Cancel a planned shutdown of the system shutdown -c

Linux Command to search the Harddisk for bad sectors sudo badblocks -v /dev/sda

Shutdown the system after a specified time. shutdown -h hours:minutes &

Erase a Rewritable Disk cdrecord -v gracetime=2 dev=/dev/cdrom -eject blank=fast -force

Force umount when the device is busy fuser -km /mnt/hda2