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If you can not remember your password, the data is lost. Not even the system administrator will be able to decrypt the data. That is why a copy of important keys is sometimes kept in a sealed vault in a bank.
9.5. Summary
Here's a list of the commands involving file backup:
Table 9-1. New commands in chapter 9: Backup
Command | Meaning |
bzip2 | A block-sorting file compressor. |
cdrecord | Record audio or data Compact Disks from a master. |
dd | Convert and copy a file |
fdformat | Low-level formats a floppy disk. |
gpg | Encrypt and decrypt data. |
gzip | Compress or expand files. |
mcopy | Copy MSDOS files to/from UNIX. |
mdir | Display an MSDOS directory. |
mformat | Add an MSDOS file system to a low-level formatted floppy disk. |
mkbootdisk | Creates a stand-alone boot floppy for the running system. |
mount | Mount a file system (integrate it with the current file system by connecting it to a mount point). |
rsync | Synchronize directories. |
tar | Tape archiving utility, also used for making archives on disk instead of on tape. |
umount | Unmount file systems. |