Newbie (VERY) trying to make a tcsh script.

[_DrMario_]

Hey I'm trying to make a script in tcsh but I'm getting some errors and I have some problems.

The script ask the user for a Internet provider and search in a file (car) full of emails to give some stats on how many people use that provider.

What's in the file car : First name, Name, email, date

The script :

echo "Enter the Internet Provider"
set providerName = "$<"
grep $providerName car >providerFile

Now after that, the problems start:

1. I want to assign the variable nb1 to the number of lines in the file providerFile.

I tried : set nb1 = $(wc -l providerFile) but it doesn't work.
I tried @ nb1 = $(wc -l providerFile) and it doesn't work and anyway, wc doesn't return a numerical value.

I think the error says Wrong file name or something.

Any ideas?

2. Even if I manage to make part 1 work, after that I need to create another variable called nb2 that contains the number of lines in the file car.

After that , I would need to be able to do mathematical operations with the 2 variables but the problem is that wc -l returns something like : 4 providerFile.
How do I make it so that it returns only a number? Or can I only cut it?

And if I can only cut it, I suppose I won't be able to do mathematical operations with the 2 variables (and assign the result to another variable)?

I could really use some help.

Thanks.

[windumi]

your requirement seem a little complicate, maybe you can have a try on perl to solve the problem....

[a thing]

http://www.faqs.org/faqs/unix-faq/shell/csh-whynot/

You'll also get a lot more support with Bash scripts.

[CodeRoot]

#!/bin/tcsh -f
echo "Enter the Internet Provider"
set providerName = "$<"
set nb1 = `grep $providerName car | wc -l`
set nb2 = `cat car | wc -l`

For arithmetic operations, do a 'man tcsh' and read up on '@' as a command....

(It is true that some/certain things are "harder" to do in csh/tcsh than in bash or perl... )

[scm]

http://www.faqs.org/faqs/unix-faq/shell/csh-whynot/

You'll also get a lot more support with Bash scripts.

That's because csh and its derivatives are appalling for scripting. Bourne et al are the professionals' choice for good reason.