rsync

Sync with different/group user and perm

Sample: rsync -qogprltD --chmod=[ugo]=[rwxX] --chown <user>:<group>

$ rsync  -qogprltD --chmod=ug=rwX --chmod=o=rX --chown $(whoami):nicegroup

Create hardlinks of an entire direcotry

$ rsync -av --link-dest="${source}/" "${source}/" "${destination}/"

all purpose rsync keeping owner, timestamp, group, recursive and displaying progress + resumeable

$ rsync -aP "${source}/" "${destination}/"