How to add jQuery Thickbox on Ajax Generated Pages

The jQuery thickbox plugin is fantastic. All you have to do is include the js file, and give the elements that require a jQuery thickbox, a class of thickbox. Like below;

<a class="thickbox" href="thickboxexample.php?height=600&width=600">jQuery Thickbox Example</a>

The thickbox plugin then automically!! attaches its events to those elements. For ease of use this is great, but it has its limitations, because the events are attached on page load.
What happens when you want to attach a thickbox to an element that is generated via an ajax call?
Well you’re gonna kick yourself! You simply need to re-call the the thickbox initialise function within your ajax call, just like the example below:

$.ajax({
    type:       "GET",
    url:        "/ajax-content.php",
    cache:      false,
    data:       "f=foo&b=bar",
    loading:    $('.loading').html(""),
    success:    function(html) {
                    $("#ajaxContent").html(html);
                    //re-attach thickbox
                    tb_init('a.thickbox, area.thickbox, input.thickbox');
                }
});

I am assuming that you already know how to make an ajax call using jQuery, so I won’t explain the above code, except for the fact that a call is made to tb_init() after the ajax response. This is the thickbox initialise function which attaches its events to your selected elements.

How To Use PHP to Force a File Download

PHP allows you to change the HTTP headers of files that you're writing, so that you can force a file to be downloaded that normally the browser would load in the same window. This is perfect for files like PDFs, document files, images, and video that you want your customers to download rather than read online.

Here's How:

1. Upload the file you want to make available for download to your Web server. For example,

   huge_document.pdf

2. Edit a new PHP file - I recommend naming it the same name as your downloaded file, only with the extension .php. For example:

   huge_document.php

3. Open the PHP block:

   <?php

4. On the next line, set the HTTP header:

   header('Content-disposition: attachment; filename=huge_document.pdf');

5. Then set the MIME-type of the file:

   header('Content-type: application/pdf');

6. Point to the file you want to download:

   readfile('huge_document.pdf');

7. Then close the PHP block and save the file:

   ?>[/blockquote>

8. Your PHP file should look like this:

   <?php
   header('Content-disposition: attachment; filename=huge_document.pdf');
   header('Content-type: application/pdf');
   readfile('huge_document.pdf');
   ?>

9. Link to your PHP file as a download link. For example:

   <a href="huge_document.php">Download my huge document (PDF)</a>

Tips:

1. There should be no spaces or carriage returns anywhere in the file. Blank lines will cause PHP to default to text/html and your file won't download.

What You Need

• The file to be downloaded
• The MIME type of the file

How to send email from the Linux command line

The Linux command line can be very powerful once you know how to use it. You can parse data, monitor processes, and do a lot of other useful and cool things using it. There often comes a need to generate a report and mail it out. It could be as simple a requirement as a notification that the day’s backup went through fine, or did not. I’ll help you get started with sending mails from the Linux command line and in shell scripts. We will also cover sending attachments from the command line. We will begin with the “mail” command.

MAIL

First run a quick test to make sure the “sendmail” application is installed and working correctly. Execute the following command, replacing “you@youremailid.com” with your e-mail address.
# mail -s “Hello world” you@youremailid.com
Hit the return key and you will come to a new line. Enter the text “This is a test from my server”. Follow up the text by hitting the return key again. Then hit the key combination of Control+D to continue. The command prompt will ask you if you want to mark a copy of the mail to any other address, hit Control+D again. Check your mailbox. This command will send out a mail to the email id mentioned with the subject, “Hello world”.
To add content to the body of the mail while running the command you can use the following options. If you want to add text on your own:
# echo “This will go into the body of the mail.” | mail -s “Hello world” you@youremailid.com
And if you want mail to read the content from a file:
# mail -s “Hello world” you@youremailid.com < /home/calvin/application.log
Some other useful options in the mail command are:
-s subject (The subject of the mail)
-c email-address (Mark a copy to this “email-address”, or CC)
-b email-address (Mark a blind carbon copy to this “email-address”, or BCC)
Here’s how you might use these options:
# echo “Welcome to the world of Calvin n Hobbes” | mail -s “Hello world” calvin@cnh.com -c hobbes@cnh.com -b susie.derkins@cnh.com

MUTT

One of major drawbacks of using the mail command is that it does not support the sending of attachments. mutt, on the other hand, does support it. I’ve found this feature particularly useful for scripts that generate non-textual reports or backups which are relatively small in size which I’d like to backup elsewhere. Of course, mutt allows you to do a lot more than just send attachments. It is a much more complete command line mail client than the “mail” command. Right now we’ll just explore the basic stuff we might need often. Here’s how you would attach a file to a mail:
# echo “Sending an attachment.” | mutt -a backup.zip -s “attachment” calvin@cnh.com
This command will send a mail to calvin@cnh.com with the subject (-s) “attachment”, the body text “Sending an attachment.”, containing the attachment (-a) backup.zip. Like with the mail command you can use the “-c” option to mark a copy to another mail id.

SENDING MAIL FROM A SHELL SCRIPT

Now, with the basics covered you can send mails from your shell scripts. Here’s a simple shell script that gives you a reading of the usage of space on your partitions and mails the data to you.

#!/bin/bash
df -h | mail -s “disk space report” calvin@cnh.com

Save these lines in a file on your Linux server and run it. You should receive a mail containing the results of the command. If, however, you need to send more data than just this you will need to write the data to a text file and enter it into the mail body while composing the mail. Here’s and example of a shell script that gets the disk usage as well as the memory usage, writes the data into a temporary file, and then enters it all into the body of the mail being sent out:

#!/bin/bash
df -h > /tmp/mail_report.log
free -m >> /tmp/mail_report.log
mail -s “disk and RAM report” calvin@cnh.com < /tmp/mail_report.log

Now here’s a more complicated problem. You have to take a backup of a few files and mail then out. First the directory to be mailed out is archived. Then it is sent as an email attachment using mutt. Here’s a script to do just that:

#!/bin/bash
tar -zcf /tmp/backup.tar.gz /home/calvin/files
echo | mutt -a /tmp/backup.tar.gz -s “daily backup of data” calvin@cnh.com

The echo at the start of the last line adds a blank into the body of the mail being set out.
This should get you started with sending mails form the Linux command line and from shell scripts. Read up the “man page” for both mail and mutt for more options.