• OSCP Review - Proctored Version
• Setting up PostGresql Replication with Loadbalancing with PGPOOL II
• Rotate your video with ffmpeg
• Cut Video file with ffmpeg
• Configure postfix to use Sendgrid as default Relay
• Wordpress Admin Security
• Touch command tips and tricks
• Bash - Convert a comma separated list to any Array
• Random Wake up of Windows Machine from Sleep mode
• Installing newer or multiple version of python on Centos
• Postfix Queue Management
• Build 32 bit application or libraries on 64 bit machine
• Nagios Bash script to monitor Domain Expiration
• Resize Partition with parted
• Centos / Redhat 7 Switching back to iptables
• SELinux Tutorial
• New Apache : Authz_core:error Client Denied by Server Configuration
• Postfix - Sender address rejected: User unknown in virtual mailbox table
• Filtering capture files with wire shark
• Postfix Spam Control
• Postfix Commands
• Samba Share Fedora 20
• Mounting NTFS Filesystem
• NTP Reflection Attack
• VMware ESXI packet capture
• ZIP tips and tricks in Linux
• Root Alias with Qmail
• Chrooting Users with SFTP
• Iptables initial Configuration
• Log Messages with specific prefix to a separate file
• Download RPM Packages with yum
• Email Server Utilities
• Block Chinese Spam
• Php Display only number of characters from string
• Execute Windows Batch File from php
• Terminating a windows process with a Batch File
• Running a query without affecting slave
• Turn off ethernet negotiation Linux
• Open SSL commands
• MySQL root grant permission denied
• Printing Content past a specific string From a file
• yum update error: Error: pkgKey doesn't exist in repo base
• Enabling Passive FTP Connections through IPTABLES
• Bash Get Extension from filename
• Configure Postfix as a backup MX
• Remote Desktop Login Success / Failure Email Notification
• Accessing a URL protected by htpasswd (Basic Auth) with php
• Installing Gluster FileSystem in Centos
• Kamailio Errors and Solutions
• Kamailio Log Management
• Centos Net Install URLs
• Installing PHP Time Zone Database
• Implementing Disk Quota
• Disabling SELINUX
• Crontab Format
• Starting and Stopping NFS Service
• Bash script to check for valid IP
• Bash Command and output History
• Running interactive command or script over ssh
• Resize Image with Bash Script
• Using IFS variable in shell scripts
• Mounting Windows Share to Linux
• Linux filesystem check utility
• SED Tutorial with examples
• Gluster Filesystem Troubleshooting
• Apache - Disable script execution upload directory
• Linux Top Command
• Sample SPF Record for a single Email Server
• Shell Script to Check the Status of MySQL Replication
• Turn on ping response on windows servers with windows firewall turned on
• Manually Installing vmware remote console plugin
• cannot start session without errors
• Configure PPTP VPN Server
• VLAN
• Shell Script to Create and Grant Privilege to a new user
• Extending an LVM With FreeSpace
• Installing Mono Tools in Centos
• Mysqldump Tips and Tricks
• Starting and stopping vmware from linux shell
• Generate Certificate signing request (CSR) with openssl
• Permission denied: proxy: HTTP
• mysql master master replication with ssl encryption
• Changing ethernet name in Vmware
• Install OSsec on Centos
• Spam Filtering with postifx and pcre
• install rar unrar in centos
• Adding default gateway outside subnet
• Shell script to ssh to a remote host without specifying the port
• Apache rewrite sample rules
• Debug apache rewrite
• Bash one liners
• Samba Tutorial
• Archiving and compressing tuotorials tar and gzip
• Shell Script to Backup all tables separately
• Postfix Tips and Tricks
• Apache Rewrite Cheat Sheet
• Apache rewrite tutorials
• Install Redmine with ruby and thin on Centos
• bash script to cd to a path
• Javascript hide element on click
• Shell script to display recipient email from message id - postfix
• ftp access to files outside base directory
• Zabbix Installation guide
• Installing and configuring lighttpd with php support
• php tips and tricks
• Zabbix Tutorials
• Creating a NFS Share
• Shell Script to check filesize
• Shell scripting tutorials
• Regular Expressions
• FFMPEG Commands tips and tricks.
• Call a url from bash script
• Useful Find Commands
• Bash Script to check if a host is alive
• Adding a Start/Stop Script to chkconfig
• Export Putty Sessions
• Sample mysql queries
• Handling arguments in bash
• Handling parameters in Bash
• Check Load average
• Nice and Renice
• Shell Script to Backup and Rotate Mysql Database
• Writing Iptables rules by hand
• Sample Kickstart file for Redhat / Centos
• write to a file using php
• shell script to monitor port and notify by email
• One liner to change ssh port
• Shell script to run command on multiple servers
• C,C++ compiler cannot create executables
• System Monitoring , disk,cpu and memory
• connect to 127.0.0.1[127.0.0.1]:10024: Connection refused.
• Using remote mail server with postfix.
• Common Ports
• Iptables tutorial and examples
• Awk Tutorials and examples
• Using TcpDump to monitor network activity
• Adding colors to shell scripts
• Bash Tutorials and snippets
• Compile error : undefined reference to pthread_once and dlopen
• Shell Script to Calculate Memory Usage by A Process
• Bash Add numbers output in a shell
• Php Session Timeout
• Additional Yum Repositories
• Mysql Tips and Tricks
• Css Cheat Sheet
• Finding and optimizing fragmented tables in mysql
• Reset Postfix Admin password
• Shared Libraries
• Grep Tutorials
• Find Dell service tag
• cut awk
• Wget Tutorials
• Delete Master Boot Record (MBR)
• Compression Utilities
• Nagios Installation on Centos
• Apache Security
• Rootkit Hunter--check if your system has been compromised
• Securing Server with Iptables ( Block Except )
• Block Ports in IPtables
• Redirect or forward ports in iptables
• Optimize MySQL From my-large.cnf
• Monitoring Mysql Variables
• Password Protected tar files
• MySql Performance Tuning and utilities
• Clear network share password
• Create a swap file
• Css Quick Notes
• Delete all files except
• Mysql Troubleshooting
• php compile error configure: error: Cannot find libmysqlclient under /usr
• Rename mutiple files
• Shell script to backup/restore an existing svn repository
• PHP basic compile options when buidling from source
• Compile individual php module
• Compile mysql client library with utf 8 support
• Copy preserving symlinks
• Xuggler
• Label an Additional Parition
• Vmware Rescan Hard Drives
• Apache force use https
• Utilities Download
• Server Security Verification Tips and Tricks
• Using TCP Wrappers
• View Cronjobs For All Users
• Centos Testing Repo
• Mysql Master Master Replication
• List Installed perl modules
• Central Log Server with Rsyslog and Php Log Con with TLS/SSL with TCP
• Add new mysql slave to an existing replication
• Replicating An Existing Database MySQL
• MySQL Replication Switch Master/Slave
• apache init script
• Compiling an additional module for apache
• Uninstall Perl Module
• Yum Tips and Tricks
• View Last failed login attempts
• Tutorial on logrotate
• Shared Library errors
• Email Piping with Postfix
• Set server logs to be sent to an email address
• View Disk Usage for all directories
• Shell script to delete files and folders older than x days
• Test Hard Drive Health Status (SMART)
• Force Unmount busy drive
• Rebuild RPM Database
• Strange characters in pstree
• Putty Tips and Tricks
• Add Delete ip address to interface
• Email Notification on Login On Linux Machines
• Asterisk Tips
• Repair broken MySQL Replication
• Default Gateway issue with Multiple Network Cards
• Citrix Xen Center Tutorials
• Flush mail queue with various mail servers
• Install Postfix,mysql,Dovecot in Centos
• Remount Filesystem in Maintenance Mode (RW)
• Installing Cygwin
• String Manipulation in bash script
• Password Change Plugin with roundcubemail
• mysql grant privileges
• Add hard drive in xen center
• Split into array in bash
• Check Null string in bash
• asterisk convert sound to g729
• Php AGI For Asterisk
• Crontab Format
• Share a bash Shell using screen
• SSH Neat Tips and Tricks
• Password protect using htaccess
• Apache Deny access to files or extensions
• Deny Access from an IP
• Useful Find Tips and Tricks
• Load balancing in Apache
• Apache Prevent Directory Listing
• php preg match
• Export CSV Php
• Read post variables
• Block Sites by IP
• Rsync to synchronize directory
• Shell Script Disk Usage Notification
• Common Sendmail Issues
• Create an ISO image in linux
• View Extensions with Call forwarding enabled
• Cisco ACL - Insert New line
• Backup restore mysql database
• Sudo Tips and Tricks
• Vsftpd With Mysql backened
• Setting default group permission on a directory
• Set Time zone In Linux
• SCP
• Ip Authentication in Kamailio
• Create View for simplifying LCR tables
• Iptables Neat Tips
• Kamailio Nat Traversal using RTPProxy
• Using LCR with kamailio
• Compiling additional modules kamailio
• Using Ngrep To capture network activity
• Install kamailio from source Centos
• Rest Mysql root Password
• Using grep to display line that doesnot start with a pattern
• Use cron to sync time using ntp
• Sed Find a value between pattern
• Delete leading spaces vi
• Block by url and url keywords in squid
• Configure DNS Server With Views
• Substract file 1 content from file 2
• Remove Files from a List
• Vi editor Tutorial and examples
• Configure Linux As a router
• Cloning disk image in Vmware Server via Command
• Configuring a Dynamic DNS Server
• Passwordless SSH
• Change login background in windows 7
• Adding a machine to samba
• Creating Alternating colors in a table
• Asterisk Log to A File
• IO Redirection In Linux
• Installing A Custom Repo
• Asterisk VoiceMail DialPlan
• Asterisk Greetings Based on Time and Date
• Time based Dial Plans in Asterisk
• Asterisk–Creating an Auto Attendant
• RPM Uninstall error–multiple matches
• Accessing Microsoft SQL Database from Linux Boxes
• Export MySQL data to csv using php script
• Import CSV file to database using PHP
• Export result of MySQL Query to CSV Format