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Shell programming practice - Weather scripts
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-Ian! D. Allen idallen@idallen.ca

Scripts must start with a correct DAT2330 preamble and assignment label.

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Part I - datsubmit 25
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Write an executable shell script that prompts for a city code and then
fetches the temperature for that city and displays it:

    $ ./temp25.sh
    ./temp25.sh: Enter city code:
    yow
    The temperature at yow is 5°C

    $ ./temp25.sh >out
    ./temp25.sh: Enter city code:
    yow
    $ cat out
    The temperature at yow is 5°C

Note that the prompt must not appear on standard output.

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Part II - datsubmit 26
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Modify the script to display the city code in UPPER CASE:

    $ ./temp26.sh
    ./temp26.sh: Enter city code:
    yow
    The temperature at YOW is 5°C

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Part III - datsubmit 27
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Modify the script to also fetch and display the city name:

    $ ./temp27.sh
    ./temp27.sh: Enter city code:
    yow
    The temperature at YOW Ottawa  North (Kanata - Orleans) is 5°C

Hint: Find a pattern that always appears on the same line as the city name.
      Capture that line, then split it to get just the city part.

Optional: Compress repeated blanks into one single blank using "tr".

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Part IV - datsubmit 28
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Modify the script to do three city codes at once (no loop):

    $ ./temp28.sh
    ./temp28.sh: Enter three city codes separated by blanks:
    yow yph yul
    YOW Ottawa North (Kanata - Orleans) 5°C YPH Inukjuak 1°C YUL Montréal 6°C

Note: You do not have to check for missing city input yet.
      You do not need to do a loop; repeat the code for each city.

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Part V - datsubmit 29
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Modify the script to put the three city codes in alphabetical order:

    $ ./temp29.sh
    ./temp29.sh: Enter three city codes separated by blanks:
    yul yow yph
    YOW Ottawa North (Kanata - Orleans) 5°C YPH Inukjuak 1°C YUL Montréal 6°C

Hint: You can't sort things unless the things are on separate lines.
      Put the things on separate lines and then sort them.  Find a way
      to pick out the individual words after you have sorted them.