dear experts,
usually when i backup to my tape drive i use
tar cv [directory]
now is there a way to add a password to that tape drive i cant use hardware encryption because we are using LTO3.
another question if i would like to add a compression to the backup directory while backing up how can i do that?
it seems tar cannot encrypt files. you can use gpg, or perhaps 7z or rar together with tar.
its a good idea to add 'real' archiver anyway, to shrink the backup. (even though tape might compress it in hardware)
so what do u recommend to install gpg or 7z?
---------- Post updated at 01:15 AM ---------- Previous update was at 12:58 AM ----------
yeah and i just install p7zip in my server now could you please tell me the right syntax to do this ?
something like this should work:
tar cf - directory | 7za a -p -si directory.tar.7z
check if its AES-256
( 7zip in Solaris | Unixpin )
edit: um, I don't know if 7z can send backup directly to tape. perhaps you could simply copy the resulting file to tape.
another option that might help is this: -so Write data to StdOut (eg: 7z x -so directory.tar.7z | tar xf -)
edit2: check this out: http://www.shell-fu.org/lister.php?id=44
great thanks for the help 
i am trying it now will update you with the result.
the last option: ( [shell-fu:view-44]$ )
seems most elegant, hope you make it work. just be sure it preserves all permissions and stuff.