This is a very typical case, the need to create a temp file on the command line quickly. Opening editor, writing content, save file and quit editor is not the fastest possible way. A faster way is to use the cat command with the name of the file and write contents of the file and give the end-of-file character (Ctrl-D).

Create Temporary File Without Editor on Command Line

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Memcached is a high-performance, distributed memory object caching system, generic in nature, but originally intended for use in speeding up dynamic web applications by alleviating database load. Memcached is a very useful also in other cases, than only dynamic web applications.

This guide explains howto install Memcached 1.4.4 current stable version of distributed memory object caching system on CentOS 5.4, Fedora 12 and Red Hat RHEL 5.4. Fedora 12 has Memcached 1.4.4 as default so extra repositories is not needed on Fedora 12.

Install Memcached 1.4.4 Distributed Memory Object Caching System

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This is quick guide howto find files and directories quick and efficiently on Linux with locate command. Linux find command is outdated, slow and complicated to use, so locate command is much better option.

Locate basic usage find files and directories

locate file
# example
locate httpd.conf
 
locate path
# example
locate /X11/

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This is a quick method with using cURL to check that Apache Compression with mod_gzip and mod_deflate is working. Only the remote server headers are needed.

Check that the Apache Compression is Working

Get headers

curl -I -H 'Accept-Encoding: gzip,deflate' http://www.if-not-true-then-false.com

-I option which will make just HEAD request to server and get headers.
-H option add header for accecpt content-encondig gzip and deflate.

Check headers

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Yum history and Yum history list

yum history lists all latest yum operations and yum history list list all operations or just selected package operations