Syntax Error: Unexpected End of File

I'm trying to write a bash script that takes three positive integers and lets you know what kind of triangle they'd make. However, I keep getting the "syntax error: unexpected end of file" message. Or, if I try to change my script, I have to fix another problem and then come back to the same syntax error.
This is my script:

#! /bin/bash -x

if [[ $# -gt 3 ]]
then
echo "A triangle only has three sides."
fi
elif [[ $# -lt 3 ]]
then
echo "A triangle has more sides than that - try three."
fi
elif [[ $# -eq 3 ]]
while [[ $1+$2<=$3 || $1+$3<=$2 || $2+$3<=$1 ]]
do
echo "These lengths can't be made into a triangle
Who do you think I am, Pythagorus? Try another three positive integers."
done

while [[ $1+$2>$3 && $1+$3>$2 && $2+$3>$1 ]]
while [[ $1*$1+$2*$2=$3*$3 || $1*$1+$3*$3=$2*$3 || $1*$1+$3*$3=$2*$2 ]]
do
echo "This is right triangle. Not right as in 'correct,' as in 'the legs make a 90 degree angle.'"
done
while [[ $1!=$2 && $2!=$3 ]]
do
echo "This is a scalene triangle."
done
while [[ $1=$2 || $1=%3 || $2=$3 ]]
do
echo "This is an isosceles triangle."
done
while [[ $1=$2 && $2=$3 ]]
do
echo "This is an equilateral triangle."
done

if [[ $1<1 ]]
then
echo "Hey, that first length isn't a positive integer."
fi
if [[ $1<1 ]]
then
echo "Hey, that second length isn't a positive integer."
fi
if [[ $1<1 ]]
then
echo "Hey, that third length isn't a positive integer."
fi


I've worked on this for so long, and even if I fix the syntax error I'm afraid I'll just run into more problems. Could anyone help me try to get this script up and running?

Thanks.

At the top of the script you have:

Code:

---

if [condition]
then
[statements]
fi
elif [condition]
then
[statements]
fi

---

I'm pretty sure this should be more like:

Code:

---

if [condition]
then
[statements]
elif [condition]
then
[statements]
fi

---

This is the sort of thing that confuses the interpreter, and has it looking for 'if' closes rather than file ends...

At first glance, the only weird thing I can see is this:

Code:

---

[[ $1=$2 || $1=%3 || $2=$3 ]]

---

maybe that typo is messing around with your script

try to change it to this:

Code:

---

[[ $1=$2 || $1=$3 || $2=$3 ]]

---

Hi.

Trying to match decision and loop begin-end token pairs:

Code:

---

Unexpected: elif found outside if-fi at line 7.
 Unexpected: fi found without prior matching if at line 10.
 Unexpected: elif found outside if-fi at line 11.
 Expected then, but got at line 12: while [[ $1+$2<=$3 || $1+$3<=$2 || $2+$3<=$1 ]]
 Expected do, but got at line 19: while [[ $1*$1+$2*$2=$3*$3 || $1*$1+$3*$3=$2*$3 || $1*$1+$3*$3=$2*$2 ]]
 Unbalanced: (do - done) count: 1

---

Good luck ... cheers, drl

Break the problem into its constitutent parts and test each one separately, e.g.:

Code:

---

is_equilateral()
{
 [ $1 -eq $2 ] && [ $2 -eq $3 ]
}

is_isosceles()
{
 [ $1 -eq $2 ] || [ $2 -eq $3 ] || [ $1 -eq $3 ]
}

is_nottriangle()
{
 [ $(( $1 + $2 )) -lt $3 ] ||
 [ $(( $1 + $3 )) -lt $2 ] ||
 [ $(( $2 + $3 )) -lt $1 ]
}

is_num()
{
 case $1 in
  *[!0-9]*) return 1 ;;
 esac
}

if ! is_num "$1$2$3"
then
  echo non-digit given
elif is_nottriangle "$1" "$2" "$3"
then
  echo not a triangle
elif is_equilateral "$1" "$2" "$3"
then
  echo equilateral
elif is_isosceles  "$1" "$2" "$3"
then
  echo isosceles
else
  echo scalene
fi

---