DOS Commands II (Alphabet B)
(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]]
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
/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
/T:time Backs up only files changed at or after the specified
Creates a log file and entry to record the backup
(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.
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