[Linux bash] Why is this not working?

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eitama | # 1 | 2010-03-11, 16:23 | Report

I've been at this for 3 hours now.
It's not wrorking.

Code:

#!/bin/sh

#my=`/sbin/ifconfig usb0`
my="abcd"

if [ $my == "*bc*" ]
then
        echo "Ok"
else
        echo "Not ok"
fi

This prints "Not ok" when i would expect it to print Ok.

I ran this on my phone using putty.

On the other hand :

this works :

Code:

#!/bin/sh

#my=`/sbin/ifconfig usb0`
my="abcd"

if [ $my == "abcd" ]
then
        echo "Ok"
else
        echo "Not ok"
fi

Please help

gobuki | # 2 | 2010-03-11, 16:31 | Report

I didn't know that * is working like that with strings. Is it? It's expanded to filesystem objects names in bash.

If you are sure this should work. How about using #!/bin/bash? :-)

eitama | # 3 | 2010-03-11, 16:41 | Report

As far as I know, glob works with == yes,

But, there is no bash on the N900, busybox....

fatalsaint | # 4 | 2010-03-11, 16:41 | Report

Code:

#!/bin/sh

#my=`/sbin/ifconfig usb0`
my="abcd"

if [ "$my" == *bc* ]
then
        echo "Ok"
else
        echo "Not ok"
fi

Maybe?

eitama | # 5 | 2010-03-11, 16:45 | Report

Originally Posted by fatalsaint View Post

Code:

#!/bin/sh

#my=`/sbin/ifconfig usb0`
my="abcd"

if [ "$my" == *bc* ]
then
        echo "Ok"
else
        echo "Not ok"
fi

Maybe?

Doesn't matter, still won't work.
The thing that is not working is the * (asterisks).

What I am ultimately trying to do is check if usb0 is RUNNING.

JosefA | # 6 | 2010-03-11, 16:46 | Report

PHP Code:


			
#!/bin/bash



my="abcd"



if [[ $my = *bc* ]]

then

        echo "Ok"

else

        echo "Not ok"

fi

eitama | # 7 | 2010-03-11, 16:48 | Report

Originally Posted by JosefA View Post

PHP Code:


			
#!/bin/bash



my="abcd"



if [[ $my = *bc* ]]

then

        echo "Ok"

else

        echo "Not ok"

fi

I don't have BASH on my N900.

kopele | # 8 | 2010-03-11, 16:48 | Report

Comparing strings like this is a form of regex which requires you use double square brackets around it: if [[ ]]

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JosefA | # 9 | 2010-03-11, 16:51 | Report

The point is, look at the difference between that and your code. The point isn't "do you have bash on your N900". I don't either.

fatalsaint | # 10 | 2010-03-11, 16:53 | Report

Oops.. I forgot the double brackets.

I knew the lack of quotes on the *bc* though...

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