Re: NSString and special characters

[Jason Coco]

On Aug 22, 2008, at 05:26 , Vladimir Sokolov wrote:

2008/8/22, Bill Bumgarner <[EMAIL PROTECTED]>:

On Aug 22, 2008, at 1:00 AM, Vladimir Sokolov wrote:

Hello All,

I am working on a command line tool. I use
NSArray *params = [[NSProcessInfo processInfo] arguments]
to get a list of command line parameters.
Then I use
NSString *param1 = [params objectAtIndex:1];
to get it.

But when I pass for example >...myapplication test$test
param1 got "testest" instead of  ""test$test"

It means as I understand that $ is interpreted as special character.

So my question is how to pass a parameter with $ inside?
And are there any other special characters which are interpreted as
special
one?

how the shell parses command lines.


doesn't have a value and, thus, you end up with 'testest'.

That is, all argument processing has been completed long before your
command line tool is even launched.


used and how your command line tool is launched.  As well, APIs for

fork()/exec*() combinations may or may not behave similarly.

So -- the real questions:

What is launching your command line tool?

Do you really need an argument with a $ character in it?



Have you read this book?  http://tinyurl.com/6kxxgc

b.bum

To be clear, this has nothing to do with NSString and everything to do with As Michael D alluded to, the shell is seeing $test and "expanding" the $t to be the value of -- typically -- the environment variable 't', which Now, the syntax and rules for substitution change depending on the shell launching processes such as NSTask, popen(), system(), and the various Most command line tools avoid such characters for the reasons stated above.

Thanks for your messages.

Now I see my problem ( Learn Unix! :))


Now for the test I am launching my tool in bash.

The $ character is part of the user password, that is why I need to use it.

process's argument list without any special privileges.

Jason

If you're using bash you can surround the argument in single quotes (e.g., 'test$test') and it won't do any expansion. However, it's a really bad idea to pass a password on the command line in Unix in general because any application can read your

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