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verify tar backup

Verify tar command tape backup under Linux or UNIX

Q. I am using tar command to backup data to tape. How do I verify that tape backup is in a good condition?

A. GNU/tar has -w or --verify option. This option attempt to verify the archive after writing it to tape, use command as follows to backup and verify the backup.

Verify TAR backup with -w and --verify options

Type the command as follows to backup /home to /dev/st0 and attempt to verify the archive after writing it /dev/st0.
# tar -cvpWlf /dev/st0 /home

Where,
c : create a new archive of /home
v : Verbose output
p : Ignore umask when extracting files i.e. preserve permissions on files
W : attempt to verify the archive after writing it
l : stay in local file system when creating an archive
f : Specify /dev/st0 as tape device (file)
/dev/st0: Tape device name.
/home : Directory to backup

For more information see: