grapplinghook.org

I wanted an example of a class containing a struct and how you reference it.

Here is a complete c++ program.

#include <iostream>         // Required if your program does any I/O

struct stick
{
int length;
int thickness;
};

class hand
{
public:
hand();  // constructor
stick poolCue;

};

hand::hand()
{
std::cout << “\nGreetings from the constructor!\n”;
}

int main()
{
hand my;  // new hand called my
my.poolCue.length = 8;
system(”pause”);

return 0;
}

I got this error today. Here was my code.

ifstream inData;

while (!inData.eof())
{
cout << “doing something…” << endl;
cout << info;
inData.get(info);
}
inData.close();ifstream inData;
It was the inData.get that was blowing it up.

Not because that line was bad, but because info was the wrong variable type.

It was declared as an a char array

char info[256]

when it needed to be a plain ol

char info

So there.

I spent a while yesterday searching for a way to do a friendly name on an email sent by sendmail.

I had a line like this:

/usr/sbin/sendmail -bm -f mike_doughty@demo.com recipientguy@grapplinghook.org < $message

What I was hoping for was something like this:

/usr/sbin/sendmail -bm -f "Mr. Excitement" <mike_doughty@demo.com> recipientguy@grapplinghook.org  < $message

I tried every permutation I could think of of the above, and nothing worked.

And Google was playing coy with me. Oh, that Google!

As near as I can figure, the line above is only the envelope information which is not actually transmitted to your email recipient.

Here’s how I ended up doing it:

$msg =  "To: Mr. Excitement <mike_doughty@demo.com>\n";

$msg .=  "From: recipientguy@grapplinghook.org\n";

$msg .=  "Subject: Success at last\n";

/usr/sbin/sendmail -bm -f "Mr. Excitement" <mike_doughty@demo.com> recipientguy@grapplinghook.org  < $message

So there is a simple sendmail example for you. Enjoy.

If you need to change unix group in the context of a session, you can use the newgrp command.

Just a little factoid that couldn’t be found in easily in Google.  Until now.

Man it was hard to find curl sftp examples, sftp command line syntax for curl, or sftp push examples on the web.

So here is one that shows an sftp push to a target directory:

curl -T newfile.txt -u root:mysecretpassword sftp://192.168.30.24/targetdir/

you can also do that as

curl –upload-file newfile.txt -u -u root:mysecretpassword sftp://192.168.30.24/targetdir/

Did you see the way the slash trails off the end, like the spoiler on a fine Italian sportscar?  Remember that, it won’t work without it.  You’ll get a “curl: (9) Upload failed: Permission denied” error.

SFTP error:

Couldn’t get handle: Permission denied

*** sorry: 50 Put cmd fails

Meaning: trying to ‘put’ the file into a directory that doesn’t exist.

Synergy is a great software app that lets you use a single mouse and keyboard with several computers.  I have a linux box and a windows box side by side with two monitors, and my mouse pointer can move seamlessly from the windows screen to the linux screen, and the keyboard switches over automatically when that happens.

But once in a while my synergy client (i.e. the one that does not have the keyboard and mouse plugged into it) has a problem, which requires a bit of configuration.  Only a second, really.  Except that due to the nature of the problem, I have no keyboard or mouse available!  Well, that’s not exactly true, I keep a mouse plugged into it all the time for just such an emergency, but a second keyboard takes up too many desk-acres, and I got tired of switching USB plugs around.

So what I sought was a virtual keyboard - a keyboard on the screen that I can click on with the mouse.  Google turned up a bunch of weird results, including some pay-for products.

But little did I realize that there is a free virtual keyboard program built into windows!

Just go to Start; All Programs; Accessories; Accessibility; On-Screen Keyboard.   Perfect, free and already installed.

To fix the error message

URL file-access is disabled in the server configuration

edit your /etc/php.ini.

There are two parameters to look at:  allow_url_fopen and allow_url_include.

Make sure those are both set to ‘On’.

Then do a service httpd restart.

That fixed me.

After installing apache and php on Linux, everything appeared to be working.

Php files did their proper php thing, html was interpreted correctly, and all seemed right with the world.

Then I tried embedding some php in a file ending in .html and it didn’t work.

For example:

<html>

<H1>Free Beer at my place</H1>

<? php

echo “Wait, how about your place instead?”;

?>

</html>

On my Linux box I had to edit /etc/httpd/conf/httpd.conf (you backed that file up first, didn’t you?) to include:

AddType application/x-httpd-php .php .htm .html

Then after a service httpd restart, my embedded php was then able to execute.

Everyplace I google for finding php version mentions the phpinfo function.  But is there a way to find your php version besides phpinfo?

Phpinfo seems to require you to be running a webserver, and in this case I’m not.

I was able to see my version by executing ‘php version’ at the command line.

Also, ‘php -i’ gives much info, though it outputs it in html format.