bk: simple utility back up files, keeping track of their dates of archive. Use unbk to restore the files bk creates - they will be of form ".<filename>.<datestamp>.bk.gz" usage: bk [-hmv] [-d dir] [-o outfile] files... Options: -d dir Write files to directory dir rather than the original location -o outfile Write files to file outfile. Use '-o -' to write to stdout -m Move mode - delete original files. -u Don't compress -c comment Add comment string (filename is then file.stamp.comment.bk.gz) -v Verbose -h This help files... Files to be backed up