SOURCE CODE:
echo “Enter the three nos.”
read a
read b
read c
if [ $a –gt $b –a $a –gt $c ]
then
echo $a “is maximum no.”
elif [ $b –gt $a –a $b –gt -$c ]
then
echo $b “maximum no.”
else
echo $c “is maximum no.”
fi
Saturday 12 May 2012
Shell script to concate two strings and find the length of resulting string.
SOURCE CODE:
echo “Enter 1st string:”
read s1
echo “ Enter 2nd string”
read s2
s=$s1$s2
l =`expr length $s`
echo “string:” $s “ length :” $l
Shell script to reverse the given no.
SOURCE CODE:
echo “Enter the no.:”
read n
l =`expr length $n `
a=1
d=$n
while [ $a –le $l ]
do
m=`expr $d % 10`
d=`expr $d / 10`
s=$s$m
a=`expr $a + 1`
done
echo $s
Shell script to sum of digits of a given no.
SOURCE CODE:
echo “Enter the no:”
read n
l =`expr length $n `
a=1
while [ $a –le $l ]
do
r=`expr $n | cut –c $a`
s=`expr $s + $r`
a=`expr $a + 1`
done
echo “Ans:“ $s
Shell script to reverse a string.
SOURCE CODE:
echo “Enter the string”
read str
l=`expr length $str`
a=1
r=$l
while [ $a –le $r ]
do
s=`expr $str | cut –c $l`
l=`expr $l – 1`
a=`expr $a + 1`
Shell script to find the max. no out of given five nos.
SOURCE CODE:
echo “Enter five nos.”
i=0
b=0
t=0
while [ $i –lt 5 ]
do
read a
b= $t
if teat $b –lt $a
then
Shell script to find the length of string, if it’s greater than 10 then print string is greater than 10 else less than 10.
SOURCE CODE:
echo “Enter the string:“
read str
l =`expr length $str`
if [ $l –lt 10 ]
then
echo “String is less than 10”
fi
if [ $l –eq 10 ]
then
echo “String is equal to 10”
fi
Shell script to print the fibonaci series up to given no.
SOURCE CODE:
echo “Enter the no.:“
read n
i=0
j=1
k=1
echo $i
while [ $j –le -$n ]
do
echo $k
k=`expr $j + $i`
Shell script to check whether the given no. is Armstrong or not
SOURCE CODE:
echo “ Enter the no.”
read n
l =`expr length $n`
i=1
d=1
while [ $i –le $l ]
do
r=`expr $n | cut –c $i`
i=`expr $i + 1`
m=`expr $r \* $r \* $r`
Shell script to check whether the given no. is perfect or not.
SOURCE CODE:
echo “Enter the no.:”
read n
i=1
k=0
while [ $i –lt $n ]
do
j =`expr $n % $i`
if [ $j = 0 ]
then
k =`expr $k + $i`
Shell script to print the series of a prime no. up to given no.
SOURCE CODE:
echo “Enter the no:“
read n
i=1
echo $i
while [ $i -le $n ]
do
k=2
while [ $k – lt $i ]
do
j =`expr $i % $k`
Shell script to find the factorial of a given no.
SOURCECODE:
echo “Enter the no:“
read n
i=1
a=1
d=0
if [ $n –eq $d ]
then
echo $a
else
while [ $i –le $n ]
do
Shell script to check whether the given string is palindrome or not.
SOURCE CODE:
echo “Enter the string:“
read str
l =`expr length $str`
a=l
while [ $a –lt -$l ]
do
s1=`echo $str | cut –c $a`
s2=`echo $str | cut –c $l`
if [ $s1 != $s2 ]
then
Shell script to check whether the given no. is prime or not
SOURCE CODE:
echo “Enter the no.”
read n
i=2
while [ $i –lt $n ]
do
e=`expr $n % $i`
if test $e –eq 0
then
echo “Given no. is not PRIME”
break;
Shell script to find whether the given no. is odd or even
SOURCE CODE:
echo “Enter the no.:”
read a
e= `expr $a % 2`
if test $e –eq 0
then
echo “no. is EVEN”
else
echo “no. is ODD”
fi
OUTPUT:
Enter the no.:
7
no. is ODD
Enter the no.:
7
no. is ODD
Shell script to count the number of users
SOURCE CODE:
echo “no of users:”
who | wc –l
OUTPUT:
no of users:
2
BASIC LINUX COMMANDS
DATE
$ date
Displays the current
Date.
MAN
$ man
Displays the manual
Page of our terminal.
Ls
$ ls
List the number of files and directories.
Ls-al
$ ls-al
List all the files in thecurrent working directory
showing permissions,
ownership, size, time and
date.
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