Installation guide

OS-9 V2.4 on EUROCOM-17 6 Additional Utilities
Software Manual 29
-n Asks if existing destination file with same name shall
be overwritten. (default)
-u Update mode. Only sources with a more recent
creation date than existing destination are treated.
Add '-r' option if for automatic update.
The following options only work on tapes.
-w Rewinds the tape before reading or writing. Use this
if you are not sure about the saveset position on the
tape. If this option is not specified, the saveset will be
written behind the last saveset on tape.
-e=<volume_size> Specifies volume size for tape in KB.
Defaults are:
120 MB for mt0.scsi (Tandberg 36XX)
2048 MB for mt0.exa (ExaByte 8200)
120 MB for mt0.teac (Teac MT-2ST)
120 MB for mt0.viper' (Archive Viper)
120 MB for mt0.standard (WangTek 5150SE/
Sankyo CP-150SE)
3000 MB for mt0.wang (WangDat 2600)
❏ Examples:
a) Make backups on disks maintaining the OS-9 file structure:
$ back /h0/SOURCES /d0/SOURCES.back -r -u
Back copies all files and directories from /h0/SOURCES to
/d0/SOURCES.back and writes over existing files with same names
if they are older than the source files to copy ('-r' '-u'). The file
structure of /d0/SOURCES.back will be the same as in
/h0/SOURCES.
$ back /h0/SOURCES /d0/SOURCES.back -f -i=17.10.86
Back formats the disk in /d0 ('-f'), using the /dd/SYS/format.back
command file and then copy all files/directories which have a more
recent date than 17.10.86 ('-i=') from /h0/SOURCES to
/d0/SOURCES.back.