Linux shell scripting if statement help please?

Question

why wont this work: ??/

#!/bin/bash

#Date: 05/11/2012
#Author: James Miller

# This program will calculate the grade and display
# the letter grade of CST8102 class. The program will
# calculate only using integers

echo ""
echo "Please only enter integers only and no decimal numbers"

echo ""
echo "Enter assignment mark (0 to 40): "
read assignment


#error checking for assignment
if [$assignmen > 4] || [$assignment < 0];
then
echo "please re-enter grade: "
read assingment
fi

#echo "Enter test1 mark (0 to 15): "
#read test1
#echo "Enter test2 mark (0 to 15): "
#read test2
#echo "Enter Final Exam mark (1 to 30): "
#read exam

Answer 1

if (( [$assignment > 40] || [$assignment < 0] ));

then echo "Invalid assignment mark: $assignment" && exit

fi



# If you want to loop until a valid mark is entered, use the while syntax.

Answer 2

i think of of you're complicated extremism and fundamentalism. The be unsleeping fundamentalism has earned a damaging connotation, yet became in user-friendly terms meant as a reaction to religious liberalism. An extremist must be somebody that shoots an abortionist indoors the call of life, a fundamentalist is somebody who insists on doing Christianity the way the scriptures say.

Answer 3

if [$assignmen > 4] || [$assignment < 0];

# missing a t in assignment also..

# mind your whitespace in spite of what they tell you



if [ $assignment > 4 ] || [ $assignment < 0 ];

Answer 4

< in bash is "-lt"

> is "-gt"