I am using the older Intel based Mac so I checked my version of rsync --version which returned the 2.6.9 version. So, I installed rsync via Homebrew and then did brew --prefix rsync which gave me the directory of /usr/local/opt/rsync. Then I found the executable at /usr/local/opt/rsync/bin/rsync. I changed my scripts then to use that full path instead of just rsync. In your example I would then use: /usr/local/opt/rsync/bin/rsync -avz —delete —log-file=“$LOG_FILE” “$SRC_DIR” “$DEST_DIR” OR /opt/homebrew/bin/rsync -avz —delete —log-file=“$LOG_FILE” “$SRC_DIR” “$DEST_DIR” if you are using Apple Silicon. Hope this helps.