Example - HP EH890–90900 Technical Reference Manual

2. Write a sample file to tape, using 'tar':
% cd /% tar cvf <device_file> <file>
The options to tar have the following meanings:
c
v
f
The arguments follow the cvf options in the command line. Their values depend on the operating
system; suggested values are given the appropriate operating system chapter. The arguments
are as follows:
<device file>
<file>
NOTE:
Make sure you prefix the file name with '.' when you back it up to tape. If you do not, the
restore operation in step 3 will overwrite the original copy on disk.
3. Read the file back from tape:
% cd /tmp % tar xvf <device file>
The 'x' option to tar here means "extract from the archive".
Use the same value for the <device file> argument as in step 2.
4. Compare the original with this retrieved file:
% cmp <original file> /tmp/<retrieved file>
This compares the files byte by byte. If they are the same, there should be no output, and this
verifies that the installation is correct. The arguments are:
<original file>
<retrieved file>

Example

Suppose you are verifying the installation of an HP LTO Ultrium tape drive on an HP-UX 11.X system.
The procedure would be as follows:
32 Verifying the installation
Create a new archive (backup file) on the device.
Operate in verbose mode.
Specify the device file explicitly.
The name of the device file for the drive.
nl
Example:/dev/rmt/c4t3d0BESTnb
The name of the file to archive, prefixed with './'.
nl
Example:./stand/vmunix
The name of the original file, prefixed with '/'.
nl
Example:/stand/vmunix
The name of the file retrieved from the archive.
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Example:stand/vmunix