Nagios® Specialist
8+ years hands-on experience in various Nagios and Linux projects* Nagios / Icinga Clusters for large environments
* Analysis, Design
* Linux and Windows Monitoring
* Plug-In Development
* Front-End Design
* Performance Tuning
* Integration, Automation
* Training
CV profile:
Norbert Uwe Klein
Neue Häuser 16
01877 Schmölln-Putzkau
Germany
Tel. +491624919289
norbert.klein@infosecprojects.net
USt-IdNr.: DE247960288
Insurance
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Notes for Linux Administrators
Linux Notepad
Libre Office SDK Java spreadsheet example
Simple load testing of the Apache2 webserver with ab
The command awk
Use Allrights to backup and restore file permissions suid sgid sticky bits owners and groups
How to burn a single file or directory with growisofs
Use basename to get the filename from a path
Bash scripts for text file manipulations
How to change the file permissions with chmod and chown
How to create cronjobs
The command cut
The command date
The command diff
Retrieve DNS information with dig
How to disable a Linux user account
Example telnet ESMTP session with SMTP AUTH
How to extract a single database from a full MySQL dump
How to use fdisk within a shell script
The command file
The command find
How to find processes associated with open ports
For loops as one-liners and within shell scripts
The command fuser
Encrypting and decrypting files with GnuPG
Creating .htpasswd and .htaccess files from the command line
The internal field separator IFS
The if statement in bash scripts and as a oneliner
The commands kill and jobs
Create large files with random content
Reboot with magic sys requests
Mysql commands
How to find the name of the linux distribution
The command pgrep
The command pmap
Configure Postfix as a relay client
The command procinfo
The command pstree
Running MySQL queries from a shell script or from the command line
How to plan a Nagios monitoring project
The command recode
How to save and restore the partition table
Use screen to return to a session on a remote server even if the connection has been closed
The command sed
How to rewrite the sender address in Postfix
How to find out the current shell type
Show logins with the command last
Examples of SNMP requests
The command split
How to redirect stdin, stdout, stderr and use simple interprocess communication
Process examination with strace
Display and set Linux kernel parameters with sysctl
The command tar
Basic commands and tips for the text editor Vim
Get a nice directory overview in the shell with tree
Control permissions of new files and directories with umask
How to handle unusual file or directory names
The command watch
The command wc