Bash Exercise - 6

Script 26: Get Options 1

#!/bin/bash

args=`getopt abc: $*`

if test $? != 0
then
echo 'Usage: -a -b -c file'
exit 1
fi

set -- $args

for i
do
case "$i" in
-c) shift;echo "flag c set to $1";shift;;
-a) shift;echo "flag a set";;
-b) shift;echo "flag b set";;
esac

done

Script 27: Get Options 2

#!/bin/bash
while getopts "ab:" flag
do

echo "$flag" $OPTIND $OPTARG
done

Script 28: If Statement 1

#!/bin/bash -x
if [ -f $1 ]
then
echo "it is a ordinary file"
fi

Script 29: If Statement 2

#!/bin/bash
if [ $(id -u) = "0" ]; then
echo "you are not logged in as a root"
fi

Script 30: If Statement 3

#!/bin/bash
echo "enter dob"
read birthday
today=`date -I`
if test "$birthday" = "$today"
then
echo "hello happy birthday"
else
echo
echo "sorry to dissappoint you"
fi