The Triangle BASH scripting

For this script we are going to take in a number via a command line argument. We are then going to draw a triangle facing right the size of the number the user entered by counting up and then counting back down (See the test cases to get a better picture of what I mean). For this script you will need to

Name This Script: triangle

Take an integer via a command line argument (DO NOT PROMPT THE USER FOR A NUMBER)

If a number is not given when executing the script, error out and alert to the user that they must provide a number. Use exit code 10 if this occurs

Using a for loop, construct the loop that will echo out the spear

Depending on the number you are on, that is what will be echoed out. For Example:

If we are at integer 5. The following will be echoed out: 55555

You will need to nest a loop within a loop. Multiple loops will be required to complete the assignment

Limit the inputted integer to be no bigger than 10. If violated, alert and exit with exit code 20.