BACKUP(8)BACKUP(8)NAMEbackup - backup files
SYNOPSISbackup [-djmnorstvz] dir1 dir2
OPTIONS-d # At top level, only directories are backed up
-j # Do not copy junk: *.Z, *.bak, a.out, core, etc
-m # If device full, prompt for new diskette
-n # Do not backup top-level directories
-o # Do not copy *.o files
-r # Restore files
-s # Do not copy *.s files
-t # Preserve creation times
-v # Verbose; list files being backed up
-z # Compress the files on the backup medium
EXAMPLESbackup-mz . /f0 # Backup current directory compressed
backup /bin /usr/bin
# Backup bin from RAM disk to hard disk
DESCRIPTION
Backup (recursively) backs up the contents of a given directory and its
subdirectories to another part of the file system. It has two typical
uses. First, some portion of the file system can be backed up onto 1
or more diskettes. When a diskette fills up, the user is prompted for
a new one. The backups are in the form of mountable file systems.
Second, a directory on RAM disk can be backed up onto hard disk. If
the target directory is empty, the entire source directory is copied
there, optionally compressed to save space. If the target directory is
an old backup, only those files in the target directory that are older
than similar names in the source directory are replaced. Backup uses
times for this purpose, like make. Calling Backup as Restore is equiv‐
alent to using the -r option; this replaces newer files in the target
directory with older files from the source directory, uncompressing
them if necessary. The target directory contents are thus returned to
some previous state.
SEE ALSOtar(1).
BACKUP(8)