appended_tasks_file.txt

Assignment - 1
---------------------------------------------------------------
 
echo "Enter a number"
read number

reminder=$(( $number % 2 ))

if [ $reminder -eq 0 ]
then
echo "$number is even number"
else
echo "$number is odd number"
fi

-----------------------------------------------------------------
 
Assignment - 2
---------------------------------------------------------------
 
for ((i=2;i < 50;i++)) do
      count=0
      for (( j = 2; j < $i; j++ ))
      do
        if [ `expr $i % $j`  -eq 0 ]
        then
        count=`expr $count + 1`
        fi
      done
      if [ `echo $count` -eq 0 ]
      then
      echo "$i is a prime number"
      fi
done
-----------------------------------------------------------------
 
Assignment - 3
---------------------------------------------------------------
 
Hello(){

  if [ $# -lt 5 ]; then
      echo "less number of inputs"
      exit 1
  else
    for item in "$@"
    do
    echo "$item"
  done | sort
fi
}

echo -n "enter something "
read text1 text2 text3 text4 text5
Hello $text1 $text2 $text3 $text4 $text5
-----------------------------------------------------------------
 
Assignment - 4
---------------------------------------------------------------
 
exec>logfile.txt
prob4(){
printf "\n"
echo "date - $(date)"
printf "\n"
echo "logged in users  - $(w)"
printf "\n"
echo "uptime - $(uptime)"
}

while true
do
echo "hi"
prob4
sleep 6
done
-----------------------------------------------------------------
 
Assignment - 5
---------------------------------------------------------------
 
install_lamp()
{
sudo yum update -y
sudo yum install -y  httpd24 php56 mysql55-server php56-mysqlnd
sudo service httpd start
sudo chkconfig httpd on
}

install_lamp
-----------------------------------------------------------------
 
Assignment - 6
---------------------------------------------------------------
 
#!/bin/bash
for (( i = 1; i < 100; i++ ))
  do
    if [[ `expr $i % 3`  -eq 0  &&  `expr $i % 5`  -ne 0 ]]
    then
    printf "foo"
    printf "\n"
  elif [[ `expr $i % 3`  -eq 0  &&  `expr  $i % 5` -ne 0 ]]
   then
     printf "bar"
     printf "\n"
  elif [[ `expr $i % 3` -eq 0  &&  `expr $i % 5` -eq 0 ]]
  then
  printf "foo bar"
  printf "\n"
  else
    printf "$i"
    printf "\n"
  fi
done
-----------------------------------------------------------------
 
Assignment - 7
---------------------------------------------------------------
 
mkdir odd
mkdir even
for i in {1..25}; do
    echo  > $i
    if [ `expr $i % 2` -eq 0 ]
    then
      mv $i even/
    else
      mv $i odd/
    fi
done
-----------------------------------------------------------------
 
Assignment - 8
---------------------------------------------------------------
 
#!/bin/bash
echo -n "Enter a number to be printed in reverse >"
read number
duplicate=$number
final_value=0
 while [[ $duplicate -gt 0 ]]; do
   #statements
   total_digits=${#duplicate}
   remainder=$(($duplicate % 10))
  digitsLess=$(($total_digits - 1))
 multiplied=$((10 ** $digitsLess))
 indi_sum=`expr $remainder \* $multiplied`
 final_value=`expr $final_value + $indi_sum `
 echo "$final_value"
 duplicate=$(( $duplicate / 10 ))
 echo "$duplicate"
 done

 echo "$final_value"
-----------------------------------------------------------------
 
Assignment - 9
---------------------------------------------------------------
 
echo "Enter any sentence u wish"
read sentence
echo $sentence > sentence.txt

echo "enter character whish to search"
read character

grep $character -o sentence.txt | wc -l
-----------------------------------------------------------------
 
Assignment - 10
---------------------------------------------------------------
 

  echo "Enter name for address"
  read name
grep -n $name nameAddress.txt
-----------------------------------------------------------------
 
Assignment - 11
---------------------------------------------------------------
 
cd /proc
highest=0
for pid in [0-9]*
do
  fd_count=$((`ls /proc/$pid/fd/ | wc -l`))
    if [[ $fd_count -gt highest ]]; then
       highest=$fd_count
       high_pid=$pid
    fi
done
echo "PID $high_pid has highest $highest file descriptors"
-----------------------------------------------------------------
 
Assignment - 12
---------------------------------------------------------------
 
find . -type f -ls | sort | head -1
-----------------------------------------------------------------
 
Assignment - 13
---------------------------------------------------------------
 
echo "hi"
sed -i -e  's/in/MAD/g' 221baker.txt
-----------------------------------------------------------------
 
Assignment - 14
---------------------------------------------------------------
 
echo "enter any numbers to determine central one"

read -a numbers

numberDigits=${#numbers[@]}

sum_high=0
echo ${numbers[1]}
for (( i=1; i<$(($numberDigits - 1)) ; i++)) do
  sum_low=0
  sum_high=0
  for (( j = 0; j < $i; j++ )) do
    #echo " i - $i"
    sum_low=$(($sum_low + ${numbers[j]}))
   #echo "sum - $sum_low"
  done
  for (( j=$(($i + 1)); j < $(($numberDigits)); j++ )); do
#echo "j- $j"
    sum_high=$(($sum_high + ${numbers[j]}))
   #echo "$sum_high"
  done
  if [[ $sum_low -eq $sum_high ]]
  then
    echo " Sum on both sides gets equal at $(($i + 1)) th position"
  fi

done
-----------------------------------------------------------------
 
Assignment - 15
---------------------------------------------------------------
 
highest=$((! df  -P | awk '{print $5}' | cut -d '%' -f 1))

if [[ $highest -lt 40 ]]; then
  #statements
   echo "System capacity less than 40%" | mail -s "a subject" davidlivingstone.mathi@gmail.com
fi
-----------------------------------------------------------------
 
Assignment - 16
---------------------------------------------------------------
 
-----------------------------------------------------------------