Error with ./install.sh

I managed to get rid of the error at line 15: if [ $revision = "1" ] by changing it to this: if [ $revision: = "1" ] so no unary operator error now.

Again the demo clock.py file runs but not the pi zero.

Thanks

You seem to be having spurious colons there, and a semicolon turning into a colon. Is there something about the way you're creating the file?

Theo

All I did was copy and paste the new file instal.sh

And why not? This is the canonical way of getting files from git. A lot of things can go wrong just by copying the raw file.

--
Ottavio Caruso

What did you paste it into ?

-- Steve O'Hara-Smith | Directable Mirror Arrays C:\>WIN | A better way to focus the sun The computer obeys and wins. | licences available see You lose and Bill collects. |

On Wed, 30 Sep 2020 20:16:25 +0100, RobH declaimed the following:

Don't know if indentation means anything to the shell, but your top file has a ";" where the second has a ":".

""" When the shell sees a semicolon (;) on a command line, it's treated as a command separator -- basically like pressing the ENTER key to execute a command. """

Based upon

the "then" is taken as a command (the examples all put it on the line UNDER the "if") so the ";" is likely correct. No idea what the ":" version was doing with it... Other than not seeing the "then" as a command.

And here, both of the lines from the second file have ":" at the end. You seem to have /something/ that seems to have created a lot of ":" where they don't belong.

--
	Wulfraed                 Dennis Lee Bieber         AF6VN 
	wlfraed@ix.netcom.com    http://wlfraed.microdiversity.freeddns.org/

On Wed, 30 Sep 2020 20:37:01 +0100, RobH declaimed the following:

Which is probably the wrong way to "fix" this.

The most likely reason for the "unary operator" message is that $revision has no value, making the statement

if [ = "1" ]

I'm guessing here, but one possible solution is to make the line

if [ "$revision" = "1" ]

hence ensuring you have an empty STRING on the left, and not a missing argument. IE:

if [ "" = "1"]

The REAL fix is to find out why the variable revision has not been set to a value!

--
	Wulfraed                 Dennis Lee Bieber         AF6VN 
	wlfraed@ix.netcom.com    http://wlfraed.microdiversity.freeddns.org/

On Wed, 30 Sep 2020 20:37:01 +0100, RobH declaimed the following:

Addendum to my immediately prior post...

Read the section "Empty Variables"

--
	Wulfraed                 Dennis Lee Bieber         AF6VN 
	wlfraed@ix.netcom.com    http://wlfraed.microdiversity.freeddns.org/

Dude, he can't even copy-paste, so don't let hem do git.

Then why the hell are you posting in this thread?

What happens when you run: python -c "import RPi.GPIO as GPIO; print GPIO.RPI_REVISION" from the command line? In install.sh this sets the revision variable.

--

Chris Elvidge, England

Why are you copying and pasting instead of downloading? Depending on the copy source, you're possibly adding extra newlines that you don't know about. (I know that copying from the output of more will do that, while copying from the output of cat won't.) Just run this:

wget

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