WRITE A PROGRAM TO DISPLAY ALL SUB-DIRECTORIES IN THE CURRENT DIRECTORY

VI SP36

FOR I IN *

DO

IF [-D $I]

THEN

ECHO $I

FI

DONE

:WQ(SAVE AND QUIT)

POSTIONAL PARAMETERS:

WHEN THE ARGUMENTS ARE PASSED WITH THE COMMAND LINE,SHELL PUTS EACH WORD ON THE COMMAND LINE INTO SPECIAL VARIABLES FOR THIS,THE SHELL USES SOMETHING CALLED AS''POSTIONAL PARAMETERS''THESE CAN BE THOUGHT OF AS VARIBLES DEFINED BY THE SHELL.THEY ARE NINE IN NUMBER,NAMED $1 THROUGH $9.

CONSIDER THE FOLLOWING STATEMENT,WHERE SP37 IS ANY EXECUTABLE SHELL SCRIPT FILE AND THE REMAINING ARE THE ARGUMENTS.

$SP37 TECNOSOFT SOLUTION IS A COMPUTER TRAINING AND DEVELOPMENT INSTITUTE.

ON ENTERING SUCH COMMAND,EACH WORD IS AUTOMATICALLY STORED SERIALLY IN THE POSTIONAL PAR SOFT'',$3 IS ''IS''AND SO ON,TILL ''INSTITUTE'',WHICH IS ASSIGNEED TO $9.