OS(Operating System) Lab Class #1 Programs and Answer

 QUESTIONS:

(If you have any problem in running the code contact me: https://www.instagram.com/hemant_2.0.exe/)

1.) WAP to find number is even or odd.

2.) WAP to find sum of two numbers

3.) WAP to find highest of 3 Numbers.

ANSWERS:

1.)

echo enter the number

read count

if [ `expr $count % 2` -eq 0 ]

then

echo Even

else

echo Odd

fi

2.)

echo Enter 2 numbers

read n1 n2

sum=`expr $n1 + $n2`

echo Sum is $sum

3.)

echo Enter three number

read num1 num2 num3

if [ $num1 -gt $num2 -a $num1 -gt $num3 ]

then

echo $num1 is greatest

elif [ $num2 -gt $num1 -a $num2 -gt $num3 ]

then

echo $num2 is greatest

else

echo $num3 is greatest

fi

### SAVE THE FILE AS FILENAME.SH(odd.sh)

### RUN USING ./FILENAME.SH(./odd.sh)

WHAT IS SHELL SCRIPTING?

A shell script is a computer program designed to be run by the Unix/Linux shell which could be one of the following:

• The Bourne Shell
• The C Shell
• The Korn Shell
• The GNU Bourne-Again Shell

A shell is a command-line interpreter and typical operations performed by shell scripts include file manipulation, program execution, and printing text.