for command – nixCraft

Shell Script To Delete Files In The First Directory Which Are Similarly Named In The Second Directory

in Decision Making, File-management last updated July 15, 2008

A shell script that accepts two directory names as arguments and deletes those files in the first directory which are similarly named in the second directory.

Shell program to read two numbers and display all the odd numbers berween those two number

in Academic, Decision Making last updated April 8, 2008

#!/bin/bash
# Shell program to read two numbers and display all the odd
# numbers berween those two number
# -----------------------------------------------
# Copyright (c) 2005 nixCraft project <http://cyberciti.biz/fb/>
# This script is licensed under GNU GPL version 2.0 or above
# -------------------------------------------------------------------------
# This script is part of nixCraft shell script collection (NSSC)
# Visit http://bash.cyberciti.biz/ for more information.
# -------------------------------------------------------------------------

echo -n "Enter first number : "
read n1

echo -n "Enter second number : "
read n2

if [ $n2 -gt $n1 ];
then
  for(( i=$n1; i<=$n2; i++ ))
  do
    # see if it is odd or even number
    test=$(( $i % 2 ))
    if [ $test -ne 0 ]; 
    then
      echo $i
    fi   
  done
else
  echo "$n2 must be greater than $n1, try again..." 
fi

#!/bin/bash

# Shell program to read two numbers and display all the odd

# numbers berween those two number

# -----------------------------------------------

# This script is licensed under GNU GPL version 2.0 or above

# -------------------------------------------------------------------------

# This script is part of nixCraft shell script collection (NSSC)

# Visit http://bash.cyberciti.biz/ for more information.

# -------------------------------------------------------------------------

echo -n "Enter first number : "

read n1

echo -n "Enter second number : "

read n2

if [ $n2 -gt $n1 ];

then

for(( i=$n1; i<=$n2; i++ ))

# see if it is odd or even number

test=$(( $i % 2 ))

if [ $test -ne 0 ];

then

echo $i

done

else

echo "$n2 must be greater than $n1, try again..."

Shell script to read 5 digit number and calculate the sum of digit

in Shell Math last updated April 4, 2008

#!/bin/bash
# Shell script to read 5 digit number and calculate the sum of digit
# -------------------------------------------------------------------------
# Copyright (c) 2005 nixCraft project <http://cyberciti.biz/fb/>
# This script is licensed under GNU GPL version 2.0 or above
# -------------------------------------------------------------------------
# This script is part of nixCraft shell script collection (NSSC)
# Visit http://bash.cyberciti.biz/ for more information.
# -------------------------------------------------------------------------

echo -n "Enter numnber : "
read n

# find out length of string using wc -c command
len=$(echo $n | wc -c)

# remove \n i.e. new line character
len=$(( $len - 1 ))

# use loop to go throug all digit one by one and calculate sum of digit on fly
for (( i=1; i <= $len; i++ ))
do
   sum=$(( $sum + $(echo $n | cut -c $i) ))
done
echo "Sum of $n is $sum"

#!/bin/bash

# Shell script to read 5 digit number and calculate the sum of digit

# -------------------------------------------------------------------------

# This script is licensed under GNU GPL version 2.0 or above

# -------------------------------------------------------------------------

# This script is part of nixCraft shell script collection (NSSC)

# Visit http://bash.cyberciti.biz/ for more information.

# -------------------------------------------------------------------------

echo -n "Enter numnber : "

read n

# find out length of string using wc -c command

len=$(echo $n | wc -c)

# remove \n i.e. new line character

len=$(( $len - 1 ))

# use loop to go throug all digit one by one and calculate sum of digit on fly

for (( i=1; i <= $len; i++ ))

sum=$(( $sum + $(echo $n | cut -c $i) ))

done

echo "Sum of $n is $sum"