Yes, <<< is a valid stream redirection operator in Bash, known as a here-string operator.
The <<< symbol is used to pass a string as standard input to a command. It allows you to redirect input to a command from a string rather than a file or device.
For example, you could use the <<< operator to pass the string "Hello, world" as input to the grep command, like this:
grep "world" <<< "Hello, world"
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