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How to identify whether the machine supports para virtual guests?
If the machine supports para virtual guests, then you should see a “pae” flag in /proc/info. This means – the machine has PAE support and can run para virtual guests. [root@unixfoo root]# cat...
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hugepages
Hugepages is a mechanism that allows the Linux kernel to utilise the multiple page size capabilities of modern hardware architectures. Linux uses pages as the basic unit of memory, where physical...
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Hardening the TCP/IP stack to SYN attacks
Hardening the TCP/IP stack to SYN attacks Mariusz Burdach 2003-09-10 Most people know how problematic protection against SYN denial of service attacks can be. Several methods, more or less effective,...
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How to build rpm package from source file (*.src.rpm) ?
How to build rpm package from source file (*.src.rpm) ? # rpmbuild –rebuild *.src.rpm Most probably, you’ll find the sources in /root/rpmbuild/SOURCES and the RPM file in /root/rpmbuild/RPMS . If not,...
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TLB – HugePage …
Translation lookaside buffer (TLB) là CPU cache để cache các virtual-to-physical memory address translation, TLB được sử dụng bởi memory management TLB là 1 table gồm chứa các các entry (mỗi entry là...
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Note about ps
Trong lệnh ps thì -e là show dạng standard syntax, còn a là dạng BSD syntax vd : ps -e => Standard syntax ps ax => BSD syntax ps -ejH & ps axjf: show process theo tree ps ax : chỉ show...
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Variables in Linux
The env, set, and printenv commands display all environment variables and their values. env and set are also used to set environment variables and are often incorporated directly into the shell set :...
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How to install MYTOP
Description: “mytop is a console-based (non-gui) tool for monitoring the threads and overall performance of a MySQL 3.22.x, 3.23.x” ( http://jeremy.zawodny.com/mysql/mytop/ ) Note: Is necessary to...
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Installing and Updating Metasploit Framework
1. download and untar metasploit framework $ wget http://metasploit.com/tools/framework-x.x.tar.gz $ tar xvzf framework-x.x.tar.gz $ cd framework* 2. install ruby # yum -y install ruby 3. install...
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Note LPI trong ngày (31/07/2008)
http://analyz3r.blogspot.com/2008/07/note-lpi-trong-ngy-31072008.html
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