Bourne Shell Hands-Ons [Unix > Bourne Shell] | Accenture TFA Training Pre-Learning Modules

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Make an effort to understand these solutions and apply them to your Hands-On difficulties. (It is not advisable that copy and paste these solutions).

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1. Script to Change Permission

Path: UNIX/Bourne Shell/Script to Change Permission/script3.sh

for f in ${*}

do

if [ -e $f ]; then

    echo "File Exists!"

    if [ -w $f ] && [ -r $f ]; then

        chmod a=rwx $f && echo "File Permission has been changed"

        fi 

    else

        echo "File does not Exist" && exit

    fi 

    done


2. Script tp Check Permission

Path: UNIX/Bourne Shell/Script to Check Permission/script2.sh

for f in ${*}

do

    [ -w $f ] && W="Write : yes" || W="Write : no"

    [ -x $f ] && X="Execute : yes" || X="Execute : no"

    [ -r $f ] && R="Read : yes" || R="Read : no"

    [ -d $f ] && D="Directory : yes" || D="Directory : no"

    echo "$W"

    echo "$R"

    echo "$X"

    echo "$D"

done


3. Script to Count 

Path: UNIX/Bourne Shell/Script to Count/script1.sh

for F in ${*}

do

   echo

   c=$( wc -c < ${F})

   echo "Number of characters in ${F} is $c"

   echo

   w=$( wc -w < ${F} )

   echo "Number of words in ${F} is $w"

   echo

   l=$( wc -l < ${F})

   echo "Number of lines in ${F} is $l"

done


4. ShellScipt1

Path: UNIX/Bourne Shell/ShellScript1/scriptprog1.sh

read -p "" num1

read -p "" num2

sum=$(($num1+ $num2))

echo "Sum of $num1 and $num2 is $sum"


5. ShellScript2

Path: UNIX/Bourne Shell/ShellScript2/scriptprog2.sh

read a

read b

read c

if [ $a -eq $b -a $a -eq $c ]; then

    echo "All the three numbers are equal"

elif [[ $a -eq $b || $b -eq $c || $c -eq $a ]]; then

    echo "I cannot figure out which number is largest"

else

    if [ $a -gt $b -a $a -gt $c ]; then

        echo "$a is largest number"

    elif [ $b -gt $a -a $b -gt $c ]; then

        echo "$b is largest number"

    elif [ $c -gt $a -a $c -gt $b ]; then

        echo "$c is largest number"

    fi

fi


6. ShellScript3

Path: UNIX/Bourne Shell/Shellscript3/scriptprog3.sh

#!/bin/bash

for number in 5 4 3 2 1

do

echo $number

done

exit 0


7. ShellScript4

Path: UNIX/Bourne Shell/ShellScript4/scriptprog4.sh

read n 

sd=0

rev=0


if [ $n -lt 0 ]

    then echo "Not a positive number"

    exit

fi


while [[ $n -gt 0 ]]

do 

    sd=$(( $n%10 ))

    rev=$(( $rev*10 + $sd ))

    n=$(( $n/10 ))

done

echo "Reverse number is $rev"


8. Shellscript5

Path: UNIX/Bourne Shell/Shellscript5/scriptprog5.sh

read a 

s=0

if [ $a -lt 0 ]

then

echo "Not a positive number"

else

while [[ $a -gt 0 ]]

do 

    k=$(( $a % 10 ))

    a=$(( $a / 10 ))

    s=$(( $k + $s ))

done

echo "Sum of digit for given number is $s"

fi



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