echo

Question 1

echo

Answer 1

Echo the STRING(s) to standard output.

Question 2

echo $x

Answer 2

echo will print the variable x

Question 3

echo -n

Answer 3

-n, Do not output the trailing newline.

Question 4

echo

• e
• E

Answer 4

• e, Enable interpretation of backslash escapes.
• E, Disable interpretation of backslash escapes (default)

Question 5

echo -e

\

\a

\b

\c

\e

\f

Answer 5

\ backslash

\a alert (BEL)

\b backspace

\c produce no further output

\e escape

\f form feed

Question 6

echo -e

\n

\r

\t

\v

\0NNN

\xHH

Answer 6

\n new line

\r carriage return

\t horizontal tab

\v vertical tab

\0NNN byte with octal value NNN (1 to 3 digits)

\xHH byte with hexadecimal value HH (1 to 2 digits)