# Miscellaneous Stuff

## FAQ: How do I download the Cisco VPN client?

For some reason, the software can only be downloaded from the [Software Center](http://www.cisco.com/pcgi-bin/tablebuild.pl/vpnclient-3des) by [registered customers](http://www.cisco.com/en/US/products/sw/secursw/ps2308/products_qanda_item09186a00801c2dbe.shtml#downloadvpnclient).

## HOWTO: Uninstall DivX

DivX Version 6.7 installs Applications/DivX/Uninstall DivX for Mac.app that
can be used to uninstall DivX.  (Installing 6.7 will supposedly upgrade all
existing DivX bits.)

## INFO: Handling missing methods in various languages

    PHP: __call
    Perl: AUTOLOAD
    Ruby: method_missing
    Python: __getattribute__
    JavaScript: ???
      FF 3+: __defineGetter__
  
See:

  * <http://langexplr.blogspot.com/2008/02/handling-call-to-missing-method-in_06.html>
  * <http://langexplr.blogspot.com/2008/02/handling-call-to-missing-method-in.html>
  * <http://developer.mozilla.org/en/docs/Core_JavaScript_1.5_Guide:Creating_New_Objects:Defining_Getters_and_Setters>
  * <http://blog.iffy.us/?p=43>

## INFO: MD5SUM HASH OF A ZERO-LENGTH FILE

d41d8cd98f00b204e9800998ecf8427e

## INFO: SHA1SUM HASH OF A ZERO-LENGTH FILE

adc83b19e793491b1c6ea0fd8b46cd9f32e592fc

## INFO: MD5SUM HASH OF A FILE WITH A SINGLE NEWLINE

68b329da9893e34099c7d8ad5cb9c940
  
## INFO: SHA1SUM HASH OF A ZERO-LENGTH FILE

da39a3ee5e6b4b0d3255bfef95601890afd80709
  
## HOWTO: FIND FLASH URL

(If a regular "view source" doesn't work or is difficult:) there's
probably a better way, but one way is to use Firefox's Firebug add-on,
select the "Net" tab, then choose the "Flash" option.  This should
list all the Flash URLs that appear on the page; right-clicking allows
you to copy the location to the clip-board.

## REGEXP: PARSE ENTRIES IN A COMBINED LOG FILE

(Perl regexps, but can be adapted.)

Parse a line of the combined logfile:

    m{
      (\S+)\s      # Remote host
      (\S+)\s      # Remote logname (from identd, if supplied)
      (\S+)\s      # Remote user
      \[(\d{2}/\w+/\d{4}\:\d{2}\:\d{2}\:\d{2}\s+.+?)\]\s # Time
      "(\w+\s\S+\s\w+\/\d+\.\d+)"\s # First line of request
      (\d+)\s      # Status
      (\d+|-)\s?   # Bytes sent, excluding HTTP headers
      (?:"(\S+)"\s # Referer (sic)
      "(.+?)")?    # User-Agent
    }ox;

Parse the first line of the request:

    m{
      (\w+)\s         # Method
      (\S+)\s         # URL
      (\w+\/\d+\.\d+) # Version
    }ox;

## FAQ: WHAT'S THE SpryMediaUK_Grid COOKIE?

It stores the per-site configuration settings for Spry Media's ["Grid"
bookmarklet](http://sprymedia.co.uk/article/Grid).

## HOWTO: Do reverse DNS query for a range of addresses

    $ for n in $(seq 1 254) ; do dig -x 217.70.191.$n +short ; done