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  Mads Madsen 09:26 on March 18, 2014 Permalink | Reply
  Tags: Python ( 2 )   

  http://sahandsaba.com/thirty-python-language-features-and-tricks-you-may-not-know.html

   

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• 

  Mads Madsen 10:20 on March 11, 2014 Permalink | Reply
  Tags: one-liner, search replace   

  One-liner search and replace 

  Shell

  katy:~ mm$ perl -pi.bak -e "s/search/replace/g" file.sql

  1	katy:~ mm$ perl -pi.bak -e "s/search/replace/g" file.sql

   
• 

  Mads Madsen 09:31 on February 14, 2014 Permalink | Reply
  Tags: 10.9, E155036, homebrew ( 3 ), Mac OS X ( 2 ), Maverick, subversion   

  Install old subversion on Mac OS X with homebrew (E155036) 

  Today I got a new macbook and I ran into a problem because the subversion installed on the laptop was too new for our subversion system.

  Error message:

  Shell

  svn: E155036: Working copy '/Users/mm/some/repository' is too old (format 10, created by Subversion 1.6)

  1	svn: E155036: Working copy '/Users/mm/some/repository' is too old (format 10, created by Subversion 1.6)

  So I had install an older version of subversion, here is how I did it.

  Tap homebrew versions.

  Shell

  katy:~ mm$ brew tap homebrew/versions Cloning into '/usr/local/Library/Taps/homebrew-versions'... remote: Reusing existing pack: 1654, done. remote: Counting objects: 7, done. remote: Compressing objects: 100% (7/7), done. remote: Total 1661 (delta 4), reused 0 (delta 0) Receiving objects: 100% (1661/1661), 544.38 KiB | 457.00 KiB/s, done. Resolving deltas: 100% (864/864), done. Checking connectivity... done Tapped 130 formula

  1 2 3 4 5 6 7 8 9 10

  katy:~ mm$ brew tap homebrew/versions Cloning into '/usr/local/Library/Taps/homebrew-versions'... remote: Reusing existing pack: 1654, done. remote: Counting objects: 7, done. remote: Compressing objects: 100% (7/7), done. remote: Total 1661 (delta 4), reused 0 (delta 0) Receiving objects: 100% (1661/1661), 544.38 KiB | 457.00 KiB/s, done. Resolving deltas: 100% (864/864), done. Checking connectivity... done Tapped 130 formula

  Install subversion16

  Shell

  katy:~ mm$ brew install subversion16

  1	katy:~ mm$ brew install subversion16

  Enjoy!

   
• 

  Mads Madsen 19:53 on February 13, 2014 Permalink | Reply
  Tags: CentOS ( 2 ), Debian ( 5 ), Linux ( 3 ), uid, usermod   

  Change a user’s UID 

  First login as root – Clean login – sudo will not work if you’re changing a UID on an already logged in user.

  Find the user’s old UID:

  Shell

  id user1

  1

  id user1

  uid=1000(user1) ….

  Change the UID:

  Shell

  usermod -u 1001 user1

  1	usermod -u 1001 user1

  Update files and directories owned by the user to the new UID:

  Shell

  find / -uid 1000 -exec chown -h 1001 '{}' \+

  1	find / -uid 1000 -exec chown -h 1001 '{}' \+

  Reboot and the UID has been changed.

   
• 

  Mads Madsen 23:04 on August 16, 2013 Permalink | Reply
  Tags: Scroll, Windows 8 ( 4 )   

  Reverse scroll direction on Windows 8 

  Powershell commands:

  PowerShell

  # View registry settings Get-ItemProperty HKLM:\SYSTEM\CurrentControlSet\Enum\HID\*\*\Device` Parameters FlipFlopWheel -EA 0 # Change registry settings # Reverse mouse wheel scroll FlipFlopWheel = 1 # Normal mouse wheel scroll FlipFlopWheel = 0 Get-ItemProperty HKLM:\SYSTEM\CurrentControlSet\Enum\HID\*\*\Device` Parameters FlipFlopWheel -EA 0 | ForEach-Object { Set-ItemProperty $_.PSPath FlipFlopWheel 1 } # The command for normal (non-inverted) scrolling has the `0` and `1` swapped: # Restore default scroll direction Get-ItemProperty HKLM:\SYSTEM\CurrentControlSet\Enum\HID\*\*\Device` Parameters FlipFlopWheel -EA 1 | ForEach-Object { Set-ItemProperty $_.PSPath FlipFlopWheel 0 }

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  # View registry settings Get-ItemProperty HKLM:\SYSTEM\CurrentControlSet\Enum\HID\*\*\Device` Parameters FlipFlopWheel -EA 0   # Change registry settings # Reverse mouse wheel scroll FlipFlopWheel = 1 # Normal mouse wheel scroll FlipFlopWheel = 0 Get-ItemProperty HKLM:\SYSTEM\CurrentControlSet\Enum\HID\*\*\Device` Parameters FlipFlopWheel -EA 0 | ForEach-Object { Set-ItemProperty $_.PSPath FlipFlopWheel 1 }   # The command for normal (non-inverted) scrolling has the `0` and `1` swapped: # Restore default scroll direction Get-ItemProperty HKLM:\SYSTEM\CurrentControlSet\Enum\HID\*\*\Device` Parameters FlipFlopWheel -EA 1 | ForEach-Object { Set-ItemProperty $_.PSPath FlipFlopWheel 0 }

   

  Switching around from Windows and Mac OS x can be a bit confusing, so I decided to reverse the scroll direction on my Windows machines, so they would feel the same as under Mac OS x.
  Here is how I did it:

  1. Find the Hardware ID for your mouse
     • Go to the mouse control panel
     • Select “Hardware” tab
     • Click “Properties” button
     • Select “Details” tab
     • From the drop-down list choose “Hardware IDs”
     • Save the VID*** entry ( e.g. VID_045E&PID_0039 )
  2. Find and change the corresponding configuration settings in the registry
     • Run regedit.exe (With administrator rights)
     • Navigate to the Key: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\HID
     • Find the Hardware ID entry of your mouse
     • Under all subkeys of the Hardware ID key look for the “DeviceParameters” key and change the “FlipFlopWheel” value from 0 to 1
  3. Making it work:
     • Unplug your mouse
     • Wait a few moments
     • Plug in your mouse

  Source: http://www.vvse.com/blog/blog/2012/02/27/reverse-scrolling-on-windows-7/

   
• 

  Mads Madsen 23:08 on April 30, 2013 Permalink | Reply
  Tags: nginx, rewrite, TYPO3 Flow   

  TYPO3 Flow nginx rewrite rules. 

  Tested on nginx 1.4 and nginx 1.2.

  Shell

  server { listen 80; server_name hostname; error_log /var/www/flow/logs/error.log debug; access_log /var/www/flow/logs/access.log combined; root /var/www/flow/Web; index index.html index.php; location ~ ^/_Resources/Persistent/ { rewrite "^/(_Resources/Persistent/.{40})/.+(\..+)" /$1$2 break; } location ~ ^/_Resources/ { access_log off; log_not_found off; expires max; break; } location ~* /favicon.ico { access_log off; log_not_found off; break; } location ~* /\.ht { deny all; access_log off; log_not_found off; break; } location / { try_files $uri $uri/ /index.php?$args; } location ~ \.php { fastcgi_split_path_info ^(.+\.php)(/.+)$; fastcgi_pass 127.0.0.1:9000; include /etc/nginx/fastcgi_params; fastcgi_index index.php; fastcgi_param FLOW_CONTEXT Development; fastcgi_param FLOW_REWRITEURLS 1; fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name; fastcgi_param SCRIPT_NAME $fastcgi_script_name; fastcgi_read_timeout 30m; } }

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  server {     listen 80;     server_name hostname;       error_log /var/www/flow/logs/error.log debug;     access_log /var/www/flow/logs/access.log combined;     root /var/www/flow/Web;     index index.html index.php;       location ~ ^/_Resources/Persistent/ {         rewrite "^/(_Resources/Persistent/.{40})/.+(\..+)" /$1$2 break;     }       location ~ ^/_Resources/ {         access_log off;         log_not_found off;         expires max;         break;     }       location ~* /favicon.ico {         access_log off;         log_not_found off;         break;     }       location ~* /\.ht {         deny all;         access_log off;         log_not_found off;         break;     }       location / {         try_files $uri $uri/ /index.php?$args;     }       location ~ \.php {         fastcgi_split_path_info ^(.+\.php)(/.+)$;         fastcgi_pass 127.0.0.1:9000;         include /etc/nginx/fastcgi_params;         fastcgi_index index.php;         fastcgi_param FLOW_CONTEXT Development;         fastcgi_param FLOW_REWRITEURLS 1;         fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;         fastcgi_param SCRIPT_NAME $fastcgi_script_name;         fastcgi_read_timeout 30m;     } }

   
• 

  Mads Madsen 21:46 on April 27, 2013 Permalink | Reply
  Tags: cmd ( 2 ), Hyper-V, netsh ( 2 ), Port forwarding, Windows 8 ( 4 )   

  Port forwarding in Windows 8 

  One of the drawbacks of Hyper-V on Windows 8 Pro, is that lack of NAT. Luckily Windows 8’s networking supports port proxies in netsh.

  PowerShell

  Host ip = 192.168.1.25 Guest ip = 192.168.137.147 netsh interface portproxy add v4tov4 listenport=22 listenaddress=192.168.1.25 connectport=22 connectaddress=192.168.137.147

  1 2 3 4

  Host ip = 192.168.1.25 Guest ip = 192.168.137.147   netsh interface portproxy add v4tov4 listenport=22 listenaddress=192.168.1.25 connectport=22 connectaddress=192.168.137.147

  Source: http://technet.microsoft.com/en-us/library/cc776297(v=ws.10).aspx

   
• 

  Mads Madsen 22:51 on April 17, 2013 Permalink | Reply
  Tags: CentOS ( 2 ), Debian ( 5 ), Linux ( 3 ), networking ( 2 ), udev   

  Fixing eth numbering 

  While moving virtual machines around, it will usually mean a change on MAC addresses on the networking interfaces, which will create new eth nodes on the machine.
  Reasons for the renaming of eth nodes on the machine, is due to the persistent mapping on Linux systems using udev.
  Fixing this is done by removing the entities in the /etc/udev/rules.d/70-persistent-net.rules and reboot the machine.

   
• 

  Mads Madsen 01:20 on April 16, 2013 Permalink | Reply
  Tags: Linux ( 3 ), PHP5 ( 3 ), WoL   

  Simple WoL script 

  Simple wake-on-lan script, to wake up a WoL enabled computer when it receives a connection. This script is currently running on an old router.

  It requires the wol command.

  PHP

  #!/usr/bin/php -q <?php if (!function_exists('pcntl_fork')) die('PCNTL functions not available on this PHP installation'); declare(ticks=1); //Configuration! $addressBind = '192.168.1.5'; $portBind = 10066; $wolEnabledIP = '192.168.1.3'; $wolEnabledNetwork = '192.168.1.255'; $wolEnabledMAC = '00:12:34:56:78:90'; //End-Configuration! $pid = pcntl_fork(); if ($pid == -1) { die('could not fork'); } else if ($pid) { exit; } else { //we are the child } if (posix_setsid() == -1) { die("could not detach from terminal"); } //Write pid $posid=posix_getpid(); $fp = fopen("/var/run/wol-daemon.pid", "w"); fwrite($fp, $posid); fclose($fp); //Signal handlers pcntl_signal(SIGTERM, "sig_handler"); pcntl_signal(SIGHUP, "sig_handler"); function sig_handler($signo) { switch ($signo) { case SIGTERM: exit; break; } } /* Allow the script to hang around waiting for connections. */ set_time_limit(0); //Turn on implicit output flushing so we see what we're getting as it comes in. ob_implicit_flush(); if (($sock = socket_create(AF_INET, SOCK_STREAM, SOL_TCP)) === false) { echo "socket_create() failed: reason: " . socket_strerror(socket_last_error()) . "\n"; } if (socket_bind($sock, $addressBind, $portBind) === false) { echo "socket_bind() failed: reason: " . socket_strerror(socket_last_error($sock)) . "\n"; } if (socket_listen($sock, 5) === false) { echo "socket_listen() failed: reason: " . socket_strerror(socket_last_error($sock)) . "\n"; } do { if (($msgsock = socket_accept($sock)) === false) { echo "socket_accept() failed: reason: " . socket_strerror(socket_last_error($sock)) . "\n"; break; } $fp = @fsockopen($wolEnabledIP, 139, $errno, $errstr, 1); //The WoL enabled computer is running Windows, that's why we are testing on port 139. if (!$fp) { $msg = "\nSince Celina is not up, I will try to wake her up for you\nPlease wait...\n"; socket_write($msgsock, $msg, strlen($msg)); pclose(popen("wol -i '.$wolEnabledNetwork.' -p 7 ".$wolEnabledMAC, "r")); while(true) { sleep(1); $fpC = @fsockopen($wolEnabledIP, 139, $errno, $errstr, 1); if (!$fpC) { continue; } else { $msg = "Celina is up and spinning, feel free get the hell out! ;-)\n"; socket_write($msgsock, $msg, strlen($msg)); break; } } } else { $msg = "\nCelina is up, so what is your point?\n"; socket_write($msgsock, $msg, strlen($msg)); fclose($fp); } socket_write($msgsock, $msg, strlen($msg)); socket_close($msgsock); } while (true); socket_close($sock);

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  #!/usr/bin/php -q   <?php if (!function_exists('pcntl_fork')) die('PCNTL functions not available on this PHP installation'); declare(ticks=1);   //Configuration! $addressBind = '192.168.1.5'; $portBind = 10066; $wolEnabledIP = '192.168.1.3'; $wolEnabledNetwork = '192.168.1.255'; $wolEnabledMAC = '00:12:34:56:78:90'; //End-Configuration!   $pid = pcntl_fork(); if ($pid == -1) {     die('could not fork'); } else if ($pid) {     exit; } else {     //we are the child } if (posix_setsid() == -1) {     die("could not detach from terminal"); }   //Write pid $posid=posix_getpid(); $fp = fopen("/var/run/wol-daemon.pid", "w"); fwrite($fp, $posid); fclose($fp);   //Signal handlers pcntl_signal(SIGTERM, "sig_handler"); pcntl_signal(SIGHUP, "sig_handler"); function sig_handler($signo) {     switch ($signo) {         case SIGTERM:             exit;             break;     } }   /* Allow the script to hang around waiting for connections. */ set_time_limit(0);   //Turn on implicit output flushing so we see what we're getting as it comes in. ob_implicit_flush();   if (($sock = socket_create(AF_INET, SOCK_STREAM, SOL_TCP)) === false) {     echo "socket_create() failed: reason: " . socket_strerror(socket_last_error()) . "\n"; }   if (socket_bind($sock, $addressBind, $portBind) === false) {     echo "socket_bind() failed: reason: " . socket_strerror(socket_last_error($sock)) . "\n"; }   if (socket_listen($sock, 5) === false) {     echo "socket_listen() failed: reason: " . socket_strerror(socket_last_error($sock)) . "\n"; }   do {     if (($msgsock = socket_accept($sock)) === false) {         echo "socket_accept() failed: reason: " . socket_strerror(socket_last_error($sock)) . "\n";         break;     }         $fp = @fsockopen($wolEnabledIP, 139, $errno, $errstr, 1); //The WoL enabled computer is running Windows, that's why we are testing on port 139.     if (!$fp) {         $msg = "\nSince Celina is not up, I will try to wake her up for you\nPlease wait...\n";         socket_write($msgsock, $msg, strlen($msg));         pclose(popen("wol -i '.$wolEnabledNetwork.' -p 7 ".$wolEnabledMAC, "r"));         while(true) {             sleep(1);             $fpC = @fsockopen($wolEnabledIP, 139, $errno, $errstr, 1);             if (!$fpC) {                 continue;             } else {                 $msg = "Celina is up and spinning, feel free get the hell out! ;-)\n";                 socket_write($msgsock, $msg, strlen($msg));                 break;             }         }     } else {         $msg = "\nCelina is up, so what is your point?\n";         socket_write($msgsock, $msg, strlen($msg));         fclose($fp);     }       socket_write($msgsock, $msg, strlen($msg));       socket_close($msgsock); } while (true);   socket_close($sock);

   
• 

  Mads Madsen 00:56 on April 16, 2013 Permalink | Reply
  Tags: Multicast, Namespaces, OOP ( 2 ), PHP5 ( 3 ), Sockets, Threading   

  WIP: “Simulated” auto scaling with PHP 

  Source: AutoScale on BitBucket

  General idea:
  Use a locale memcached database to keep an eye on load for the current server, using data from processes using resources on the node. (Eg. not connection time to database server, only pure processing power used on current node).

  Usage:
  Edit config.php.
  execute agent.php

  Todo:

  • Allow possibility to change testing to “loadavg”, as a source for determine load.