while-loop

Thomas23 · 05-24-2004, 07:30 AM

This works:

cat $hulp | while IFS=: read a1 a2 a3
do
some things
done

What is wrong with this one?

cat $hulp | while [ IFS=: read a1 a2 a3 ] && [ !$HTTP_COOKIE ]
do
some things
done

wapcaplet · 05-24-2004, 10:46 AM

Maybe the assignment statement? I think that this:

Code:

IFS=: read a1 a2 a3

Should be this:

Code:

IFS := read a1 a2 a3

At least, with bash I'm fairly sure that's the correct assignment syntax...

Hko · 05-24-2004, 11:23 AM

Quote:

What is wrong with this one?

cat $hulp | while [ IFS=: read a1 a2 a3 ] && [ !$HTTP_COOKIE ]
do
some things
done

Don't use the square brackets around "IFS=: read a1 a2 a3". They are use for testing things. In this case you are not testing enything...

In "[ !$HTTP_COOKIE ]" the square brackets are needed probably, but it's not very clear what you want to do in this case. The syntax is wrong. If $HTTP_COOKIE contains a file name, and you want to test if that file does not exist, use:

Code:

cat $hulp | while [ IFS=: read a1 a2 a3 ] && [ ! -f $HTTP_COOKIE ]
do
some things
done

if ypu want to do something else with this part, tell us what it is that you would like it to do.

Thomas23 · 05-24-2004, 02:04 PM

i want to test if a cookie exists...

so testing if the cookie is a file isn't what i'm lokking for...

cat $hulp | while [ IFS=: read a1 a2 a3 ] && [ ! -f $HTTP_COOKIE ]
do
some things
done

Greetings from Holland,
Thomas

Hko · 05-24-2004, 03:35 PM

Quote:

i want to test if a cookie exists...

What kind of string does $HTTP_COOKIE contain? A cookie_ID, like "1618210828" ?

And what does a line in the file $hulp look like? Does it have a field that has the cookie_ID you want to check for?

Please provide this info, it's not very clear what you would like to test.

Quote:

cat $hulp | while [ IFS=: read a1 a2 a3 ] && [ ! -f $HTTP_COOKIE ]

This part: "[ IFS=: read a1 a2 a3 ]" is still not correct. Remove the '[' and ']'.

Quote:

Greetings from Holland,

Dacht ik al :-) vanwege "hulp".