Posted by jpluimers on 2017/06/08
The RouterOS scripting language you can use on Mikrotik device immediately shows it’s origin: the console.
As promised some links to questions I asked:
Posted in Development, Hardware, Internet, MikroTik, Network-and-equipment, Power User, RouterOS, routers, Scripting, Software Development, WinBox | 1 Comment »
Posted by jpluimers on 2017/06/07
When switching my DHCP to a Mikrotik CCR1009, both the AP7920 and AP7921 failed to get IP addresses. The APC7921 would look bounce between waiting and offered states like this:
The cause is the need of DHCP Option 43 (Vendor Class Identifier) specified in RFC2132 – based on [WayBack] RFC 2131 – Dynamic Host Configuration Protocol and [WayBack] RFC 1533 – DHCP Options and BOOTP Vendor Extensions – which I found first via these links:
Posted in Development, Internet, MikroTik, Power User, RouterOS, routers, Scripting, Software Development | 3 Comments »
Posted by jpluimers on 2017/06/01
The picture tricked me into thinking it was a Makefile for Tic-Tac-Toe, but it is in fact a 174 kilobyte makefile for Conways’ game of life which proofs that make macros are Turing complete.
Source: Makefile Assignments are Turing-Complete « null program
While running on my Mac, the recursivity will make it fail on lack of resources though.
If seen both these:
and
make[119]: /bin/sh: Resource temporarily unavailable
make[119]: *** wait: No child processes. Stop.
make[119]: *** Waiting for unfinished jobs....
make[119]: *** wait: No child processes. Stop.
–jeroen
Posted in Development, Makefile, Scripting, Software Development | Leave a Comment »
Posted by jpluimers on 2017/04/26
Printing Markdown with GitPrint
Simply view any Markdown file on GitHub, then in your URL bar replace the github.com part of the URL with gitprint.com — your markdown file will be rendered to a beautiful, printable PDF.
Try an example https://gitprint.com/jquery/jquery/blob/master/README.md
Every once in a while I feel like I’ve been living under a stone for years. Today is such a day as gitprint has been around since 2014 and I only noticed it until now.
It’s cool as it prints any github page (including Markdown, RestructuredText, etc) as a PDF file.
Notes:
Posted in Bookmarklet, Development, DVCS - Distributed Version Control, git, GitHub, jQuery, Software Development, Source Code Management, Web Browsers | Leave a Comment »
Posted by jpluimers on 2017/04/20
Note this works only when the VMs have VMware Tools installed (more on that below):
VMWare provides, not surprisingly, a built in tool for this, vmrun. It’s under
/Applications/VMware Fusion.app/Contents/Library/vmrunalthough it has moved around in other Fusion releases a bit.
🍺 vmrun list Total running VMs: 1 .docker/machine/machines/myvm.vmx
🍺 vmrun getGuestIPAddress ~/.docker/machine/machines/myvm.vmx 172.16.213.128
via: How do I find the IP address of a virtual machine using VMware Fusion? – Super User [WayBack]
vmrun [WayBack] is barely documented and most of is in PDF of which this is the most recent I could find: www.vmware.com/pdf/vix180_vmrun_command.pdf [WayBack]
Based on the above path, I added this to my ~/.bash_profile file:
alias vmrun='/Applications/VMware\ Fusion.app/Contents/Library/vmrun'
alias vmrun-list-running-VMs='vmrun list | grep vmx'
vmrun-list-ipv4-of-running-VMs()
{
vmrun-list-running-VMs | while read line ; do echo $line && vmrun getGuestIPAddress $line; done
}
Now I can do this:
$ vmrun-list-ipv4-of-running-VMs
/Users/jeroenp/VM/W81Entx64DelphiRegression.vmwarevm/W81Entx64.vmx
172.16.172.135
/Users/jeroenp/VM/diaspore-opensuse-Tumbleweed-x64.vmwarevm/diaspore-opensuse-Tumbleweed-x64.vmx
Error: The VMware Tools are not running in the virtual machine: /Users/jeroenp/VM/diaspore-opensuse-Tumbleweed-x64.vmwarevm/diaspore-opensuse-Tumbleweed-x64.vmx
$ vmrun-list-ipv4-of-running-VMs
/Users/jeroenp/VM/diaspore.opensuse-Tumbleweed-x64/diaspore.opensuse-Tumbleweed-x64.vmx
Error: Unable to get the IP address
/Users/jeroenp/VM/W81Entx64DelphiRegression.vmwarevm/W81Entx64.vmx
172.16.172.135
$ vmrun-list-ipv4-of-running-VMs
/Users/jeroenp/VM/diaspore.opensuse-Tumbleweed-x64/diaspore.opensuse-Tumbleweed-x64.vmx
Error: Unable to get the IP address
/Users/jeroenp/VM/W81Entx64DelphiRegression.vmwarevm/W81Entx64.vmx
172.16.172.135
$ vmrun-list-ipv4-of-running-VMs
/Users/jeroenp/VM/diaspore.opensuse-Tumbleweed-x64/diaspore.opensuse-Tumbleweed-x64.vmx
172.16.172.134
/Users/jeroenp/VM/W81Entx64DelphiRegression.vmwarevm/W81Entx64.vmx
172.16.172.135
$ vmrun-list-ipv4-of-running-VMs
/Users/jeroenp/VM/diaspore.opensuse-Tumbleweed-x64/diaspore.opensuse-Tumbleweed-x64.vmx
172.16.172.134
/Users/jeroenp/VM/W81Entx64DelphiRegression.vmwarevm/W81Entx64.vmx
172.16.172.142
These are the messages I observed:
Error: The VMware Tools are not running in the virtual machine: /Users/jeroenp/VM/diaspore-opensuse-Tumbleweed-x64.vmwarevm/diaspore-opensuse-Tumbleweed-x64.vmx
Error: Unable to get the IP address
172.16.172.135
The first one means a machine is running but has no VMware Tools installed. For an OpenSuSE machine you can install it with zypper install open-vm-tools, for other Linux systems read VMware Tools auf Ubuntu, Mint, CentOS oder openSUSE installieren | ITrig [WayBack]
Some more examples of vmrun for VMware Fusion are at Control VMware Fusion from the Command Line | James Reuben Knowles [WayBack]
–jeroen
Posted in *nix, bash, Development, Fusion, openSuSE, Power User, Scripting, Software Development, SuSE Linux, Tumbleweed, Virtualization, VMware | Leave a Comment »
Posted by jpluimers on 2017/04/18
Glueing together APIs requires working with JSON: parsing it, extracting it, transforming it. JQ is a fast, lightweight, flexible, CLI JSON processor, that does the job well. Learn how to use it by getting your hands dirty with a JSON blob that represents the open issues in the public Docker GitHub repository.
via: http://blog.librato.com/posts/jq-json – Joe C. Hecht – Google+
–jeroen
Source: http://blog.librato.com/posts/jq-json
Posted in bash, Development, JavaScript/ECMAScript, jq, JSON, Scripting, Software Development | Leave a Comment »
Posted by jpluimers on 2017/04/13
Cool: .bashrc generator: create your .bashrc PS1 with a drag and drop interface
–jeroen
http://bashrcgenerator.com/ – Joe C. Hecht – Google+
Posted in bash, Development, Scripting, Software Development | Leave a Comment »
Posted by jpluimers on 2017/04/13
How bad is the Windows command line really?
The Windows command line is bad. Very bad.
But it took until recently for old Windows versions – that out of the box had either no or poor PowerShell versions – to have slowly died.
So only now PowerShell finally has become an option that really works across all Windows versions I use. Go PowerShell!
–jeroen
Posted in Batch-Files, Development, PowerShell, Scripting, Software Development | Leave a Comment »
Posted by jpluimers on 2017/04/12
Blank imageFlair
Hosting Grumpydev Imageflair locally ended with two issues left: an empty image and my wish to include more complete StackExchange bits like the current StackExchange flair does.
I thought fixing the empty image would take a rainy day. It actually took a few rainy hours.
The culprit is that I didn’t have the Microsoft Core Fonts for the Web installed. Which was no coincidence as the free download of those from Microsoft terminated in 2002. The upside is that because of their licenses, they are available as open source and most linux distributions have a script package that will download these fonts. OpenSuSE has fetchmsttfonts for this.
Alternatively, you can use the web.archive.org to download manually, but that’s a tad tedious. But if you love tedious: Free downloads – TrueType core fonts for the Web.
zypper install fetchmsttfonts
That installs the fonts in:
/usr/share/fonts/truetypeThe drawback of having fetchmsttfonts is that the original Microsoft versions of these fonts are downloaded from corefonts.sourceforge.net each time the fetchmsttfonts package is updated, potentially overwriting newer versions of the fonts in that directory. If you don’t want that, use the trick at (not yet archived at the WayBack machine) font handling – install fetchmsttfonts, copy fonts, rpm -e fethmsttfonts, copy fonts back.
Having the fonts installed, I thought the only thing I needed to fix were the multiple references in config.php from that pointed to Arial.TTF. I took the poor man’s approach and just did this being in the directory of config.php:
cp /usr/share/fonts/truetype/arial.ttf Arial.TTF
Filled Imageflair
That didn’t work either: still no text showed.
So I decided to run imageFlair.php from the command line after setting $imageflair_debug = true; in config.php which then resulted in all sorts of warnings like
PHP Warning: imagettftext(): Could not find/open font
After reading I decided to build a small php-gd.tester.php script containing phpinfo(); and gd_info showing these portions for PHP GD (non-relevant bits stripped):
| Additional .ini files parsed | /etc/php5/conf.d/ctype.ini, /etc/php5/conf.d/dom.ini, /etc/php5/conf.d/gd.ini, /etc/php5/conf.d/iconv.ini, /etc/php5/conf.d/json.ini, /etc/php5/conf.d/mysql.ini, /etc/php5/conf.d/mysqli.ini, /etc/php5/conf.d/pdo.ini, /etc/php5/conf.d/pdo_mysql.ini, /etc/php5/conf.d/pdo_sqlite.ini, /etc/php5/conf.d/sqlite3.ini, /etc/php5/conf.d/tokenizer.ini, /etc/php5/conf.d/xmlreader.ini, /etc/php5/conf.d/xmlwriter.ini |
| GD Support | enabled |
| GD headers Version | 2.1.1 |
| GD library Version | 2.1.1 |
| FreeType Support | enabled |
| FreeType Linkage | with freetype |
| FreeType Version | 2.6.3 |
| GIF Read Support | enabled |
| GIF Create Support | enabled |
| JPEG Support | enabled |
| libJPEG Version | 8 |
| PNG Support | enabled |
| libPNG Version | 1.6.21 |
| WBMP Support | enabled |
| XPM Support | enabled |
| libXpm Version | 30411 |
| XBM Support | enabled |
| WebP Support | enabled |
And the gd_info dump:
| <?php | |
| echo "<h1>gd_info</h1>"; | |
| $gdInfo = gd_info(); | |
| echo "<table>"; | |
| foreach($gdInfo as $key=>$value) { | |
| echo "<tbody>"; | |
| echo "<tr>"; | |
| echo "<td class='e'>" . $key . "</td>"; | |
| echo "<td class='v'>" . $value . "</td>"; | |
| echo "</tbody>"; | |
| } | |
| echo "</table>"; | |
| ?> |
| GD Version | 2.1.1 |
| FreeType Support | 1 |
| FreeType Linkage | with freetype |
| T1Lib Support | |
| GIF Read Support | 1 |
| GIF Create Support | 1 |
| JPEG Support | 1 |
| PNG Support | 1 |
| WBMP Support | 1 |
| XPM Support | 1 |
| XBM Support | 1 |
| WebP Support | 1 |
| JIS-mapped Japanese Font Support |
Too bad though: no information on where it sources the fonts from.
Having no solution for the font rendering yet, I focussed at the lack of profile picture.
In the past, the images were generated with gravatar information in the JSON, but now that is empty. See for instance the output of http://superuser.com/users/flair/1.json versus his image http://superuser.com/users/flair/1.png
| { | |
| "id": 1, | |
| "gravatarHtml": { | |
| }, | |
| "profileUrl": "http:\/\/superuser.com\/users\/1\/jeff-atwood", | |
| "displayName": "Jeff Atwood", | |
| "reputation": "14,561", | |
| "badgeHtml": "<span title=\"24 gold badges\"><span class=\"badge1\">●<\/span><span class=\"badgecount\">24<\/span><\/span><span title=\"79 silver badges\"><span class=\"badge2\">●<\/span><span class=\"badgecount\">79<\/span><\/span><span title=\"109 bronze badges\"><span class=\"badge3\">●<\/span><span class=\"badgecount\">109<\/span><\/span>" | |
| } |
That reveals quite a change in the JSON that imageFlair expects. Actually there is a lot of HTML in there.
So decided to try http://superuser.com/users/flair/1 in addition to http://superuser.com/users/flair/1.json with this result:
| <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> | |
| <html xmlns="http://www.w3.org/1999/xhtml"> | |
| <head> | |
| <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> | |
| <style type="text/css"> | |
| .valuable-flair .userInfo .username a, .valuable-flair .mod-flair | |
| { | |
| color: #1086A4; | |
| } | |
| </style> | |
| <link rel="stylesheet" href="//sstatic.net/flair-Default.css" /> | |
| </head> | |
| <body> | |
| <div class="valuable-flair"> | |
| <div class="gravatar"> | |
| <a title="See my profile on Super User" target="_blank" href="http://superuser.com/users/1/jeff-atwood"><div class="gravatar-wrapper-50"><img src="https://www.gravatar.com/avatar/51d623f33f8b83095db84ff35e15dbe8?s=50&d=identicon&r=PG" alt="" width="50" height="50"></div></a> | |
| </div> | |
| <div class="userInfo"> | |
| <span class="username"><img src="http://superuser.com/favicon.ico" width="16" /><a href="http://superuser.com/users/1/jeff-atwood" target="_blank">Jeff Atwood</a><span class="mod-flair" title="moderator">♦</span></span> | |
| <br /> | |
| <span class="reputation-score" title="reputation score">14,561</span> | |
| <br /> | |
| <span title="24 gold badges"><span class="badge1">●</span><span class="badgecount">24</span></span><span title="79 silver badges"><span class="badge2">●</span><span class="badgecount">79</span></span><span title="109 bronze badges"><span class="badge3">●</span><span class="badgecount">109</span></span> | |
| </div> | |
| </div> | |
| </body> | |
| </html> |
Two downsides here:
Time for another rainy day (:
–jeroen
Posted in *nix, *nix-tools, bash, Development, Linux, openSuSE, PHP, Pingback, Power User, Scripting, Software Development, Stackoverflow, SuSE Linux | Leave a Comment »
Posted by jpluimers on 2017/04/11
In order to scan some local networks for unknown hosts (yes, on some sites you need to perform archeology), I needed the local IPv4 addresses, netmasks and CIDRs on my Mac running OS X.
Part of that is using ifconfig to get local inet information which however uses hexadecimal network masks and delivers no CIDRs.
SoI was a bit premature when I wrote about “This could be done by creating bash functions mask2cdr and cdr2mask, but that’s a bit too convoluted right now” in Getting the IP addresses of gmail MX servers – via Super User – dig isn’t enough.
I need mask2cdr now, so lets start with these two bash functions and their aliases:
Posted in *nix, *nix-tools, Apple, bash, Development, Mac OS X / OS X / MacOS, OS X 10.10 Yosemite, OS X 10.11 El Capitan, OS X 10.9 Mavericks, Power User, Scripting, Software Development | Leave a Comment »
The Wiert Corner - irregular stream of stuff 