The following command searches for files over 20mb all over your hard disk
You can search a specific directory by specifying a directory such as find /var/www and the size can be modified by increasing or decreasing the +20000k
find / -type f -size +20000k -exec ls -lh {} \; | awk '{ print $9 ": " $5 }'
To change the timezone from the cli, the following command will be usefull, the command below changes the operating system timezone to Malta.
cp /usr/share/zoneinfo/Europe/Malta /etc/localtime
if you want to change it to a different country
ls /usr/share/zoneinfo/Europe
to see different countries in europe. and change the command the choose your country instead
to see Global
ls /usr/share/zoneinfo/
And select your Continent directory where you can find a larger list of places.
This is a simple tutorial, on how to download the Apache Httpd, compile and get it installed on your system. With a few basic modules on Cent0s 5.X
Lets start by downloading the latest source from the Apache site
example
cd /tmp
wget http://www.devlib.org/apache/httpd/httpd-2.2.11.tar.gz
Tar –xzvf httpd-2.2.11.tar.gz
cd httpd-2.2.11
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This is a simple tutorial, on how to download the php source, compile and get it installed on your system
Lets start by downloading the latest source from the php site
example
cd /tmp
wget http://www.php.net/get/php-5.2.10.tar.gz/from/uk.php.net/mirror
Tar –xzvf php-5.2.10.tar.gz
cd php-5.2.10
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GREP
grep essentially prints lines matching a pattern.
grep –options pattern file
The grep command has a lot of useful option, including:
Working with Permissions
Permissions determine how users can access resources on a system. System security is configured by the user’s UID (User ID), his GIDs (Group ID), (both primary and secondary), and the permissions on the object she is attempting to access.
Permission Trio Bits
The figure below shows the 10 positions (1 type bit and 3 trios of permission bits) that make up the permissions section of a file.
In Linux there are 6 run levels, basically being the following:
| Init Level | Description |
| 0 | This level is reserved for the shutdown phase. |
| 1 | Single-user mode (equivalent to Windows “safe mode”) |
| 2 | Multi-user setup without NFS (Network Filing System) |
| 3 | Full multi-user with networking, starting all required services |
| 4 | Typically unused but could be set to be a “custom” level. |
| 5 | Level 3 plus the X windows service i.e. the Linux GUI |
| 6 | Reserved for “reboot” only. |
| a | |
| alias | Create’s alias’s |
| apt-get | Package Manager for distro’s such as Ubuntu or debian based |
| aspell | Spell Checking tool |
| arp | Address Resolution Protocol, used to translate ip’s to hardware interface addresses |
| awk | Find and Replace text, database sort/validate/index |
| b | |
| bash | Bourne-Again SHell |
| bc | Arbitrary precision calculator language |
| bg | Launch in background |
| break | Quit a loop |
| builtin | Shell builtin |
| bzip2 | Compression / De-compression tool |
| c | Read the rest of this entry » |
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