Revision Question 1 on Linux. Please briefly explain the shell script given.

a) You have just logged in and have a directory called "images" in your home directory containing the following files:

favicons login.png logo.png newlogo.png

where "favicons is a directory and contains the files

favicon.ico favicon.gif favicon.png favicon.jpg

Describe the results you would expect when executing the following shell commands:

i) ls images/*og* | wc -1

ii) ls -ld images/*

iii) rmdir images/favicons

iv) cp images/*/*png images

v) rm -r images

(assume each command is run when the directory "images" is as described above)

b) Consider the following short shell script:

#!/bin/sh

mkdir $3

for i in $1/*$2

do

cp $i $3

touch $i

done

If this script is stored in a file called script1, what would be the effect of running this shell command:

./script1 images png newdir

c) Describe the underlying principle behind the Linux command set - often called the "UNIX philosophy".