Welcome to the Unix Tree. Here you can browse the source code and manuals of various old versions of UNIX. For every file, you can also find related files from other versions: this can help show how the different versions of UNIX are related.
The X Window System (more commonly called X11) on Mac OS X provides significant opportunities for Mac OS X developers. Based on the open source XFree86 project, X11 for Mac OS X is compatible, fast, and fully integrated with Mac OS X. It includes the full
SSH (secure shell) is a program enabling secure access to remote filesystems. Not everyone is aware of other powerful SSH capabilities, such as passwordless login, automatic execution of commands on a remote system or even mounting a remote folder using S
Adopt 10 good habits that improve your UNIX® command line efficiency -- and break away from bad usage patterns in the process. This article takes you step-by-step through several good, but too often neglected, techniques for command-line operations. Lear
Perhaps you rarely face it, but once you do, you surely know what's wrong: lack of free memory, or Out of Memory (OOM). The results are typical: you can no longer allocate more memory and the kernel kills a task (usually the current running one). Heavy sw
memcached is a distributed memory caching system that was originally developed by Danga Interactive for LiveJournal. It is used to speed up dynamic database-driven websites by caching data and objects in memory to reduce the amount the database needs to b
Do you need to resolve the segmentation fault while using the atexit handler function on AIX® 5.2? This article explores techniques that can be used to resolve program crashes resulting from missing atexit handlers.