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UGU: Unix Guru Universe - Unix Tip #4504- July 11, 2025
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Unix Tip #4504- July 11, 2025
SECURE BACKUPS OVER NET
Securely backup a partition
across a network using dd,
gzip and SSH:
1. The partition to be backed
up must be unmounted.
2. The following does the trick:
dd if=/dev/partition_to_be_backed_up | gzip | ssh user_name@backup.server dd of=name_of_backup_file.gz
As an example, the following
backs up an image of a floppy disk:
dd if=/dev/fd0 | gzip | ssh user_name@backup.server dd of=floppy.img.gz
3. To restore a backed-up
partition across a network:
(From the backup server)
dd if=name_of_backup_file.gz | gzip -d | ssh user_name@target.server dd of=/dev/target_partition
To complete our floppy disk example:
dd if=floppy.img.gz | gzip -d | ssh user_name@target.server dd of=/dev/fd0
This tip generously supported by: steve-g@bigfoot.com
NOTE: All tips provided are USE AT YOUR OWN RISK. Tips are submitted
by various unix admins around the globe. UGU suggest you read and
test each tip in a non-volitile environment before placing into
production.
LAST 5 TIPS
4503
- FINDING DISKS W/O ROOT
4502
- GEEK DECODER RING
4501
- ARCHIVE ONLY FILES
4500
- FIND AND EDIT STRINGS
4499
- GRABBING THE HIDDEN
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