Author Archives: Oliver Mueller

Mac OS X: Icons of Apps Disappeared from Launchpad

A Solution for OS X Yosemite and OS X El Capitan as well as older releases like OS X Mavericks Sometimes it is strange. Suddenly icons of apps are disappearing from the Launchpad. If you open the applications folder in … Continue reading

Posted in Mac, OS X | Tagged , , , | 3 Comments

Android Studio: What to Exclude While Importing a Project into Subversion?

If you put an Android Studio project under version control with Subversion, you will have to exclude some files from version control. Otherwise you will have local settings in your repository which will not work on other workstations. See what … Continue reading

Posted in Android, Android Studio, Subversion, Version control | Tagged , | 2 Comments

OS X: Some Icons Suddenly Disappeared in Finder

Suddenly some icons, not all, disappeared in my Finder on my MacBook.  A restart and clearing the caches could not solve this problem. Fortunately a reinstallation of OS X was not necessary because the solution was so simple…

Posted in Mac, Operating systems, OS X | Tagged , , | 1 Comment

OS X: Aquamacs and GNU Emacs — Keyboard Problems on the Mac

If you are — like I — one of those strange people who are not using a keyboard with US layout on a Mac, you might encounter a real problem while using the apps Aquamacs and GNU Emacs on OS … Continue reading

Posted in Emacs, Mac, OS X | Tagged , , , , , | 4 Comments

WebSphere Application Server: Jython Throws an IOException While Accessing Environment Variables

If you try to access an environment variable via Jython’s os.environ in wsadmin of WebSphere AS and you are on the “wrong” Windows release you will get an IOException telling you “Cannot run program “sh”: CreateProcess error=2, The system cannot … Continue reading

Posted in Java, Java EE, Jython, Programming, Python, WebSphere AS, Windows | Tagged , , | 5 Comments

ownCloud and Baikal: Problems Loading ICS Files into Calendar

When I tried to load an exported ICS file into Baikal’s calendar I encountered fatal problems. Most of the appointments could not be loaded. A similar problem occurred in conjunction with ownCloud’s calendar. The uploaded ICS file did not follow … Continue reading

Posted in Cloud, PHP | Tagged , , , , , , , , | 4 Comments

Renaming a Linux Volume Group Containing the Root File System

Not often, but sometimes you find yourself in situations where you have to rename a volume group on Linux. You have a base image in a virtualization platform, for example. You clone it and you realize that your preferred Linux … Continue reading

Posted in Linux, Operating systems, Virtualization | Tagged , , , , | 3 Comments

NetBeans 7.4 and Subversion CLI – a Problematic Couple with Self-signed Certificates

On my Windows PC my primary tool for accessing subversion repositories is TortoiseSVN. A while ago I updated to TortoiseSVN 1.8.4. This version of TortoiseSVN is based upon Subversion 1.8. So I migrated all my working copies from SVN 1.7 … Continue reading

Posted in IDE, NetBeans, Subversion, Version control | Tagged , , , | 4 Comments

Object-oriented implementation of RSA in PHP

With this blog post I release an object-oriented PHP implementation of the RSA public key algorithm. The implementation is based on Edsko de Vries’ non-object-oriented implementation. Additionally to the object-orientation I reimplemented the signature methods which are now based on … Continue reading

Posted in Cryptographic algorithm, Cryptography, PHP, Programming, RSA | Tagged , , , | 6 Comments

Display UIC on OpenVMS as easy as id on Unix and Linux

On Unix it is easy to get your numeric UID and the GIDs of your primary group and secondary groups. You call the program id simply. On OpenVMS it is not such easy to retrieve your numeric UIC which is … Continue reading

Posted in DCL, OpenVMS | Tagged , | 2 Comments