NAME

finc − fast incremental backup

SYNOPSIS

finc [selection-criteria] file-system raw-tape

DESCRIPTION

Finc selectively copies the input file-system to the output raw-tape. The cautious will want to mount the input file-system read-only to insure an accurate backup, although acceptable results can be obtained in read-write mode.  The tape must be previously labelled by labelit (see volcopy(1M)). The selection is controlled by the selection-criteria, accepting only those inodes/files for whom the conditions are true.

It is recommended that production of a finc tape be preceded by the ff command, and the output of ff be saved as an index of the tape’s contents.  Files on a finc tape may be recovered with the frec command. 

The argument n in the selection-criteria which follow is used as a decimal integer (optionally signed), where +n means more than n, −n means less than n, and n means exactly n. A day is defined as 24 hours.

−a n True if the file has been accessed in n days. 

−m n True if the file has been modified in n days. 

−c n True if the i-node has been changed in n days. 

−n file True for any file which has been modified more recently than the argument file.

EXAMPLE

finc −m −2 /dev/rdiskusr /dev/rtp0

writes a tape consisting of all files from file-system /usr modified in the last 48 hours. 

SEE ALSO

cpio(1), ff(1M), frec(1M), volcopy(1M). 

Version 2.1  —  January 02, 1985