System BackupsBackup TapesTape Drive Device Nodes, Rewinding, and EjectingThe $TAPE VariableTape Status with mt(1)Other Tape Drive CommandsTo Rewind or Not?Backup Programstartar ModesCreate an ArchiveList Archive ContentsExtract Files from BackupVerify BackupsOther tar FeaturesUse a File Instead of TapeVerbosegzipCompressionbzip CompressionPermissions RestoreAnd More, More, More . . .dumpUser Controldump Levelsdump, Tape Drives, and Filesdump and Live FilesystemsTimestamps and dumpRunning dumpThrowing Data Overboard with nodumpRestoring from a dumpChecking the Contents of an ArchiveRestoring dump DataRestoring a FileRestoring a FilesystemInteractive RestoresMultiple Backups on One TapeRevision ControlInitializing Revision ControlEditing Files in RCSChecking Back InViewing RCS LogsReviewing a File’s Revision HistoryGetting Older VersionsBreaking LocksMultiple Check-insRCS and ident StringsRecording What HappenedThe Fixit Disk