UNIX CODE
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#!/bin/sh
# Simple input/output script

echo "Please enter your name:"
read name
echo Hello $name!

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#!/bin/sh
# Simple while script

count=0
limit=7

while [ "$count" != "$limit" ]
   do
     echo "Hello World"
     count =`expr $count + 1`
done

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#!/bin/sh
# Simple for script

for user
  do
    finger $user | fgrep "On since"
done

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#!/bin/sh
# Simple for script

users='userid1 userid2 userid3'

for user in $users
  do
    finger $user | fgrep "On since"
done

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#!/bin/sh
# Simple case script

case $1 in
   sh)
     echo "This is the Bourne Shell"
   ;;
   ksh)
     echo "This is the Korn Shell"
   ;;
   csh)
     echo "This is the C-Shell"
   ;;
   *)
     echo "No item of that type in case list"
   ;;
esac

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#!/bin/sh
# Simple if-then-else script

if [ "$1" = "5" ]
then
   du $2
else
   ls $2
fi

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#!/bin/sh
# Simple until script

count=0
limit=7

until [ "$count" = "$limit" ]
   do
     echo "Hello World"
     count=`expr $count + 1`
done