Linux Regular Expression True/False

1."^[A-Z]+" is an equivalent expression to "[^A-Z]+"

true or false

2.Both of the following commands are functionally equivalent

cat flights.txt | grep -E "ONT"

grep -E "ONT" flights.txt

true or false

3.When used as part of a command, the pipe | character directs the output of one command, to the input of another.

true or false

4.The regular expression "\<[A-Za-z]{5,}\>" will match any word of 5 or more characters.

true or false