Advertisement Updated by Bertel King, Jr. on June 22nd 2017 You’ve made the switch from Windows or Mac OS X, and now you’re looking for applications to install. Or maybe you’re a long-time Linux user who’s keeping an eye out for what’s new. Either way, you’ve come to the right place. You’ve already picked a Linux distro and have settled on a desktop environment. Most of the software below is free and open source. A few require you to download an installer from a website. Browsers Firefox Firefox has lost market share over the years, but it remains the best fully open source browser around. Chrome/Chromium By some measures, Chrome is now the king of the hill. Opera Opera isn’t open source, but it is free. Web (Epiphany) Browser There aren’t many browsers developed explicitly for Linux. QupZilla None of the above browsers look quite at home on the KDE Plasma desktop. Email Thunderbird Thunderbird is the email client from Mozilla. Geary Evolution KMail Claws Mail Instant Messaging Pidgin Empathy WPS Office
Matriux | Free hacking linuxTestMy.net Broadband Internet Speed TestProcess Management | Process Descriptor and the Task StructureThis chapter is from the book Threads of execution, often shortened to threads, are the objects of activity within the process. Each thread includes a unique program counter, process stack, and set of processor registers. The kernel schedules individual threads, not processes. In traditional Unix systems, each process consists of one thread. In modern systems, however, multithreaded programs—those that consist of more than one thread—are common. On modern operating systems, processes provide two virtualizations: a virtualized processor and virtual memory. A program itself is not a process; a process is an active program and related resources. A process begins its life when, not surprisingly, it is created. Often, immediately after a fork it is desirable to execute a new, different, program. Another name for a process is a task. Allocating the Process Descriptor The new structure also makes it rather easy to calculate offsets of its values for use in assembly code. Process State
PentooASCII Art—Holidays and Events—New Year's EveMore ASCII HolidaysMore ASCII ArtMain PageHow the Kernel Manages Your MemoryAfter examining the virtual address layout of a process, we turn to the kernel and its mechanisms for managing user memory. Here is gonzo again: Linux processes are implemented in the kernel as instances of task_struct, the process descriptor. The mm field in task_struct points to the memory descriptor, mm_struct, which is an executive summary of a program’s memory. It stores the start and end of memory segments as shown above, the number of physical memory pages used by the process (rss stands for Resident Set Size), the amount of virtual address space used, and other tidbits. Within the memory descriptor we also find the two work horses for managing program memory: the set of virtual memory areas and the page tables. Each virtual memory area (VMA) is a contiguous range of virtual addresses; these areas never overlap. In Windows, the EPROCESS block is roughly a mix of task_struct and mm_struct. Linux has functions to read and set each flag in a PTE. Things could have been different.
How to Install Backtrack 5 - Backtrack TutorialsUpdated: December 22, 2012 Download the Backtrack 5 ISO Head over to: Then click the download button. After that, you will be able to pick the version of backtrack that you want. Setting up a Virtual Machine A virtual machine (VM) is the software implementation of a physical computer. To start, you’re going to need to get VM software. Whichever VM software you go with, make sure it has a way to network with other VMs. I will be use VMware Workstation, but these programs are very similar in function. After everything is installed and running, click “Create new virtual machine”. Next you’re going to select “Installer disc image file” then browse for the backtrack 5 ISO. Select the operating system as linux, and the version as Ubuntu. Give the virtual machine a name such as “Backtrack 5 R3” and select a location for where you want to save the virtual machine files. When asked how much you want the virtual disk drive to be, you want at least 25 GB.