linux/usage/scripting

[kaybee]

Follwing the instructions at http://www.raspberrypi.org/documentatio ... ripting.md, results in:

./fun-script: line 1: 1: command not found

I am Using Raspbian, on Raspberry Pi B. Any ideas?

Thanks,

kaybee

[DirkS]

Are you sure that link is correct? I get a 404 error...

Gr
Dirk.

[DirkS]

I checked the docs on github...

Did you maybe type 'While' instead of 'while'?

Gr.
Dirk.

[rpdom]

I just tried the script as shown and got the same result.

Changing it from

Code: Select all

while 1
do
echo Raspberry Pi!
done

to

Code: Select all

while true
do
echo Raspberry Pi!
done

works

[B.Goode]

The man page for /bin/bash says the argument to while must be a command: it is the return status of that command that is checked. Presumably an integer is not processed as a command and does not have a return value.

I have raised this as an 'Issue' on the github site for the RPF documentation. https://github.com/raspberrypi/documentation/issues/134

[Joe Schmoe]

Incidentally, the more "idiomatic" way to do this is:

Code: Select all

while :;do
…
done

[B.Goode]

The tutorial referred to has now been corrected.

[kaybee]

All:
Thanks guys, being new to this, I was confused. It's interesting that:

while true
do
echo Raspberry Pi!
done

was actually corrected to:

while :
do
echo Raspberry Pi!
done


on the tutorial. Both work.

Thanks again