rsync permissão negada ao backup em / my_flash / (13)

Question

Eu estou tentando fazer o backup de diretórios $ HOME / DATA, $ HOME / HW, $ HOME / CODE e dois arquivos .bash em / Volumes / my_flash /. Aqui está o arquivo backup.bash que eu usei para fazer isso:

rsync -rp $HOME/DATA /Volumes/my_flash/
rsync –rp $HOME/.bash* /Volumes/my_flash/
rsync –rp $HOME/CODE /Volumes/my_flash/

Mas continuo recebendo esses erros mesmo depois que mudei o proprietário e o grupo my_flash para meu nome de usuário e minha equipe. Por favor, diga-me o que devo fazer para evitar esse erro.

skipping directory /Users/juejunyang/DATA

sent 21 bytes  received 20 bytes  82.00 bytes/sec
total size is 0  speedup is 0.00
rsync: link_stat "/Users/juejunyang/HW/HW_3/?\#200\#223vp" failed: No such       file or directory (2)
rsync: mkstemp "/Volumes/my_flash/..bash_history.F7g98G" failed: Permission denied (13)
rsync: mkstemp "/Volumes/my_flash/..bashrc.sFFh8o" failed: Permission denied (13)
rsync error: some files could not be transferred (code 23) at /SourceCache/rsync/rsync-45/rsync/main.c(992) [sender=2.6.9]
rsync: link_stat "/Users/juejunyang/HW/HW_3/?\#200\#223vp" failed: No such file or directory (2)
skipping directory /Users/juejunyang/CODE
rsync error: some files could not be transferred (code 23) at /SourceCache/rsync/rsync-45/rsync/main.c(992) [sender=2.6.9]
rsync: link_stat "/Users/juejunyang/HW/HW_3/?\#200\#223vp" failed: No such file or directory (2)
skipping directory /Users/juejunyang/HW
rsync error: some files could not be transferred (code 23) at /SourceCache/rsync/rsync-45/rsync/main.c(992) [sender=2.6.9]