You are given a password input prompt when transferring files to a different server with rsync.
$ rsync -avz /data root@srv::files Password:
There are two ways to use the RSYNC_PASSWORD environment variable and the --password-file option.
Using the environment variable
$ export RSYNC_PASSWORD=secret $ rsync -avz /data root@srv::files or $ RSYNC_PASSWORD=secret rsync -avz /data root@srv::files
Using the command option
$ echo Passw0rd > user2.secret $ chmod 600 user2.secret $ rsync -avz --password-file user2.secret /data root@srv::files
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