pmx-sophos-data - Update Sophos data files
pmx-sophos-data update pmx-sophos-data rollback pmx-sophos-data rollback 1
The pmx-sophos-data script safely updates Sophos data files without disrupting running scans. All subsequent messages are scanned with the new data files.
pmx-sophos-data is the script used to install automatic virus data updates.
Four versions of Sophos data files are stored in the etc/data/sophos directory. One of these is the current set of DAT files, as specified by the current symbolic link; the other three are backups from previous updates, and can be reinstalled if necessary. The files in the top-level directory are called the ``master'' files. The master files are always updated first, then copied into a subdirectory that the scanners use.
For example, here is a typical listing of etc/data/sophos:
$ ls -l total 5480 drwxr-xr-x 2 pmx pmx 4096 Oct 14 16:12 1 drwxr-xr-x 2 pmx pmx 4096 Oct 14 16:12 2 drwxr-xr-x 2 pmx pmx 4096 Oct 14 16:12 3 drwxr-xr-x 2 pmx pmx 4096 Oct 14 16:12 4 -r--r--r-- 1 pmx pmx 507 Oct 14 16:12 agobotae.ide -r--r--r-- 1 pmx pmx 537 Oct 14 16:12 backsm-a.ide -r--r--r-- 1 pmx pmx 2570 Oct 14 16:12 bdooraag.ide -r--r--r-- 1 pmx pmx 227 Oct 14 16:12 blaxe-a.ide lrwxrwxrwx 1 pmx pmx 1 Oct 14 16:12 current -> 1 -r-xr-xr-x 2 pmx pmx 210500 Oct 14 16:12 vdl-3.74.dat lrwxrwxrwx 2 pmx pmx 12 Oct 14 16:12 vdl.dat -> vdl-3.74.dat -r--r--r-- 2 pmx pmx 443637 Oct 14 16:12 vdl01.vdb -r--r--r-- 2 pmx pmx 401446 Oct 14 16:12 vdl02.vdb -r--r--r-- 2 pmx pmx 389383 Oct 14 16:12 vdl03.vdb -r--r--r-- 2 pmx pmx 439542 Oct 14 16:12 vdl04.vdb -r--r--r-- 2 pmx pmx 459468 Oct 14 16:12 vdl05.vdb -r--r--r-- 2 pmx pmx 376402 Oct 14 16:12 vdl06.vdb -r--r--r-- 2 pmx pmx 374881 Oct 14 16:12 vdl07.vdb -r--r--r-- 2 pmx pmx 344925 Oct 14 16:12 vdl08.vdb -r--r--r-- 2 pmx pmx 258931 Oct 14 16:12 vdl09.vdb -r--r--r-- 2 pmx pmx 370090 Oct 14 16:12 vdl10.vdb -r--r--r-- 2 pmx pmx 474813 Oct 14 16:12 vdl11.vdb -r--r--r-- 2 pmx pmx 405851 Oct 14 16:12 vdl12.vdb -r--r--r-- 2 pmx pmx 462176 Oct 14 16:12 vdl13.vdb
In this example, the current files are in 1, as well as the top level. Older files are kept in 2, 3, and 4. Any operation that requires adding, deleting, or changing files in this directory will store the new files, copy them into the next directory (2 in this example), and then update current.
To roll back to a particular version, first list the rollbacks available:
pmx-sophos-data rollback
Typical output is:
$ pmx-sophos-data rollback
* [2] - Wed Oct 15 23:56:27 2003
[1] - Tue Oct 14 16:12:46 2003
[4] - Mon Oct 13 15:21:11 2003
[3] - Sun Oct 12 20:34:02 2003
The current files are always shown first, followed by the possible rollbacks. If the desired file is found, roll back to it:
pmx-sophos-data rollback 3
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