Computing/Linux/Rsync
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- Rsync is a program useful for making backups. Example:
/usr/bin/rsync -a /home/username/ /path/to/backupdir
- If a file was originally in both source/ and destination/ (from an earlier rsync, for example), and you delete it from source/, you probably want it to be deleted from destination/ on the next rsync:
rsync -a --delete source/ destination/
- Directory vs files:
- rsync -a /source /dest - copy "source" directory; result: /dest/source/sourcefiles
- rsync -a /source/ /dest - copy contents of "source"; result: /dest/sourcefiles
- Useful options:
-a, --archive This is equivalent to -rlptgoD. It is a quick way of saying you want recursion and want to preserve almost everything. Note however that -a does not preserve hardlinks, because find- ing multiply-linked files is expensive. You must separately specify -H. -r, --recursive recurse into directories -l, --links copy symlinks as symlinks -p, --perms preserve permissions -t, --times preserve times -g, --group preserve group -o, --owner preserve owner (root only) -D, --devices preserve devices (root only) --exclude=PATTERN exclude files matching PATTERN (--exclude ´*~´) --delete-excluded also delete excluded files on the receiving side