Unix as Sing

8/16/2019 Unix as Sing

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1.Wap to print fibonacci series.

echo "Enter the number"

read n

a=1

b=-1

while [ $n -ne 0 ]

do

s=`expr $a + $b`

b=$a

a=$s

echo $s

n=`expr $n - 1`

done

2. Wap to take string as an input for finding its length.


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echo "Enter any strin to !ind the lenth"

read s

echo "he lenth o! the strin is#"

expr "$s" # %&'

3.Wap by using a switch case to construct a calculator.

echo "Enter two number"read aread b

echo "press 1 !or add"echo "press ( !or subtract"echo "press ) !or multiplication"echo "press * !or diision"read ocase $o in1,

echo èxpr $a + $b` ''(,

echo èxpr $a - $b`''),

echo èxpr $a & $b` ''*,

echo èxpr $a $b` ''&, echo "wron choice" ''esac


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4.Wap to find whether the number is armstrong or not%

echo 'Enter armstrong number='read na=$nr=0s=0

while [ $a -gt 0 ]do

r=èxpr $a % 10`s=èxpr $s $r !" $r !" $rà=èxpr $a # 10`done

i [ $s -e $n ]thenecho 'armstrong'elseecho 'not armstrong'&


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5. Wap by using grep command with both logical operators && and ||.

grep e !hod "| hi! compsc

grep e !study .# student! compsc

$. Write and e%ecute the following '() *ommands

*reate two files with the name of name.t%t+ which contains only names+ and reg.t%t

with the content of register number respecti,ely.


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• .ombine the two !iles in the !orm o! reister number !ollowed by name

• /ort the two !iles in ascendin order


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• .ount the number o! lines in the !iles

-ename the two files


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. Write and e%ecute the following '() *ommands

*reate two files

/isplay the contents of both the files

*ount the number of characters in both the files


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-ename the two files

*ombine the two files without duplicate


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0. Write and e%ecute the following '() *ommands

*reate a file

rint the specified number of lines of a file from start to end of the file

/isplay the file content with line number

pdate the file content with ( redirection


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-ename the file

. Write and e%ecute the following '() *ommands

*reate a directory


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*reate a file

-ename the directory

-ename the file

iew the file


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10, rite and execute the !ollowin 234 .ommands

• .reate a !ile

• pdate the !ile

• 5isplay the !ile content

• 5isplay the !ile with line number


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• .ount the number o! words in the !ile


• .reate a !ile

• 6ename a !ile

• .hane the mode o! the !ile to read only


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• 7iew the content o! a !ile

• .ount the number o! words in !ile

1(, rite and execute the !ollowin 234 .ommands

• .reate a 5irectory called main


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• .reate a sub-directory called sub in the main directory

• .reate a !ile in the main directory

• .reate the !ile to the sub directory

• 5elete the !ile in the main directory


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• 5isplay the present wor8in directory

• 5isplay your user name

• .reate a !ile usin cat command


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1*, rite and execute the !ollowin 234 .ommands

• .reate two directories called ./1101 and ./110(

• .reate a !ile called ./1101%txt in the ./1101 directory

• .reate the !ile ./1101%txt !rom ./1101 to ./110(

• pdate the !ile content o! ./1101%txt in the ./110( directory


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• 6ename the !ile in the ./110( with ./110(%txt


• .reate a directory with the name o! Exam

• .hane the Exam directory as the wor8in directory


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• .reate a !ile

• 7iew only !iles !rom a directory

• 6ename a !ile

• 7iew all !iles startin with a speci!ic character


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• 7iew all the !iles which has a speci!ic extension

1;, rite and execute the !ollowin 234 .ommands

• 5emonstrate pipe command

• 5emonstrate tee command


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• se more than one command at a time < who and date ,

• .reate a !ile called create%txt

• oe the !ile create%txt to moe%txt

• 1>% rite script to !ind out biest number !rom ien three numbers% 2umbers are supplies as

command line arument% ?rint error i! su!!icient aruments are not supplied%

• i! [ $@ -ne ) ]

• then

• echo "?lease ie ) command line aruments"

• exit 1'

• !i

• i! [ $1 -t $( ] AA [ $1 -t $) ]

• then


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• echo " $1 is the reatest number "

• eli! [ $( -t $) ] AA [ $( -t $1 ]

• then

• echo " $( is the reatest number "

• else

• echo "$) is the reates number"

• !i

• 1B% Cow to write shell script that will add two numbersD which are supplied as command

line arumentD and i! this two numbers are not ien show error and its usae%

i! [ $@ -ne ( ] ' then

echo -e " please proide correct number o! aruments"

else

@ $1 is !irst arument and $( is second %

echo " sum o! $1 + $( is `expr $1 + $(` "

!i


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• (0% ind a ien !ile and show its permission and last modi!ied 5ate 0*%0)%(01:

• (1% rite a shell script to chec8 whether a ien !ile is exist or notF

• ((% Enter a number o! names and sort them then display on the screen%

• ()% rite a /hell proram to chec8 the ien number is een or odd

echo -n "Enter numnber # "read nrem=$


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(9% rite a /hell proram to !ind the area and circum!erence o! a circle

echo "Enter the radius o! the circle"read rpi=)%1*c=$


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s=`expr $s + $r K& $r`doneecho "sum o! sHuare o! the number is # $s"

20. Write a 6hell program to find the largest among three numbers

echo 8nter 3 numbers with spaces in between

read a b c

l9:a

if ; :b gt :l <

then

l9:b

fi

if ; :c gt :l <

then

l9:c

fi

echo =agest of :a :b :c is :l

(B% rite a /hell proram to !ind the !actorial o! a number

echo "Enter the alue !or n"read n


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s=1

!or


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read becho "be!ore swap"echo "a=$a"echo "b=$b"temp=$a

a=$bb=$tempecho "a!ter swap"echo "a=$a"echo "b=$b"

echo "enter two numbers to swap without usin temp% ariable"

read aread bc=èxpr $a K& $bà=èxpr $c $a`b=èxpr $c $bècho "a!ter swap"echo "a=$a"echo "b=$b"


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32. Write a 6hell program to find the sum of all numbers between 5> and 1>>+ which aredi,isible by 3 and not di,isible by 5.

echo "the sum o! numbers !rom 90 to 100 which are diisible bye ) but not diisible by 9"s=0!or


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))% rite script to see current date D time D shell and directory%

echo "CelloD $MNO2PE"echo ".urrent date is `date`"echo "ser is `who i am`"echo ".urrent direcotry `pwd`"

)*% Cow to calculate 9%1( + 9%( real number calculation at dollar prompt in shell%

)9% Cow to per!orm real number calculation in shell script and store the result in third ariableDletsay a=9%::D b=>%:; D c=a+bFa=5.66


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b=8.67

c=ècho $a + $b | bc`

echo "$a + $b = $c"

(9% rite a /hell proram to chec8 the ien inteer is prime or notecho "Enter a number# "read numi=(!=0while [ $i -le èxpr $num (` ]

doi! [ èxpr $num G $i` -eH 0 ]then!=1!ii=èxpr $i + 1`donei! [ $! -eH 1 ]thenecho "he number is composite"else

echo "he number is ?rime"!i

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