In tar -czf backup.tar.gz -C data -T manifest.txt, what do -C data and -T manifest.txt do?
tar -czf backup.tar.gz -C data -T manifest.txt
-C data
-T manifest.txt
Compress data and test manifest.txt for corruption
data
manifest.txt
Operate relative to data and read archive members from the manifest
Change timestamps and set the archive creation time from the manifest
Copy data and transform the manifest into an archive