WRITE A PROGRAM TO CHANGE DIRECTORY

 1.

VI SP8

ECHO ENTER DIRECTORY NAME

READ DNAME

IF CD $DNAME

THEN

ECHO ''CHANGED TO $DNAME''

PWD

FI

:WQ(SAVE AND QUIT)

2.IF-THEN-ELSE-FI STATEMENT

SYNTAX

IF CONDITION

THEN

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ELSE

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FI

THE EXIT STATUS OF THE CONTROL COMMAND IS 0 THEN IT EXECUTES THEN STATEMENTS OTHERWISE IT EXECUTES ELSE STATEMENTS.