Computing/Linux/Rsync

/usr/bin/rsync -a /home/username/ /path/to/backupdir
 * Rsync is a program useful for making backups. Example:

rsync -a --delete source/ destination/
 * 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:


 * 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

-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
 * Useful options: