0 DOS Commands II (Alphabet B)

BACKUP

         (External - DOS 2.0 and above)

Backs up one or more files from one disk to another.

BACKUP source destination-drive: [/S] [/M] [/A] [/F[:size]]

  [/D:date[/T:time]] [/L[:[drive:][path]logfile]]

  source             Specifies the file(s), drive, or directory to back up.

  destination-drive: Specifies the drive to save backup copies onto.

  /S                 Backs up contents of subdirectories.

  /M                 Backs up only files that have changed since the last

                     backup.

  /A                 Adds backup files to an existing backup disk.

  /F:[size]          Specifies the size of the disk to be formatted.

  /D:date            Backs up only files changed on or after the specified

                     date.

  /T:time            Backs up only files changed at or after the specified

                     time.

  /L[:[drive:][path]logfile]

                     Creates a log file and entry to record the backup

                     operation.

 

BREAK 

       (Internal - DOS 2.0 and above)

      Sets or clears extended CTRL+C checking.

BREAK [ON | OFF]

Type BREAK without a parameter to display the current BREAK setting.

        

Source: Wikipedia

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