Question

echo Check - {1,2,3} -Back​

Answer 1

Answer:

this question is related to what!?

Answer 2

Explanation:

• a method for detecting errors. A copy of the data is sent back to the sender computer right away by the receiving machine for comparison.

Arithmetic expansion uses the form:

[root@localhost ~]# echo -e ({1,2,3})

• The echo command can be used to show a line of passed-in text or string arguments.
• This built-in command is frequently and widely used to output status tests to files and screens in numerous batch files and shell scripts.

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