UNIX for Dummies Questions & Answers

I'm using a script (automysqlbackup) to dump mysql db's to .sql file followed by taking one full backup of the .sql file and the differential backups of the newer sql file every day using the tool diff.

Now the backup destination folder contains files like,

I would like to how do i restore from these backups, say if I want to apply the diff1 to the full backup file testdatabase.sql.

Were you using the UNIX diff and with some options like -e for ex output? The diff -e output can be used with ex to rewrite the older files forward:

Code:

(
cat diff files
echo "w <new_file_name>
q"
)|ex <copy_of_original_file_for_safety>

Generally it'd be patch originalfile diff-file

But depending on how you made the diff's there may be other options involved. Backup before trying of course.

Yeah, the patch tool is the one I was looking for. Thanks dude!