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Course Outline
Debian Distribution
What is Debian?
- Choosing Debian version
- Debian support and help
- Debian community
Console basics
- The shell prompt
- The shell prompt under X
- The root account and root shell prompt (su, sudo, running programs as root under X)
- GUI system administration tools
- Virtual consoles
- How to leave the command prompt
- How to shut down the system
- Recovering a sane console
- Additional package suggestions for the newbie
- An extra user account
- sudo configuration
The filesystem
- Filesystem permissions
- Control of permissions for newly created files: umask
- Permissions for groups of users (group)
- Timestamps
- Links
- Named pipes (FIFOs)
- Sockets
- Device files
- Special device files
- procfs and sysfs
Midnight Commander (MC)
- Customization of MC
- Starting MC
- File manager in MC
- Command-line tricks in MC
- The internal editor in MC
- The internal viewer in MC
- Auto-start features of MC
- FTP virtual filesystem of MC
The basic Unix-like work environment
- The login shell
- Customizing bash
- Special key strokes
- The pager
- Setting a default text editor
- How to quit vim
- Recording the shell activities
- Basic Unix commands
The simple shell command
- Command execution and environment variable
- "$LANG" variable
- "$PATH" variable
- "$HOME" variable
- Command line options
- Shell glob
- Return value of the command
- Typical command sequences and shell redirection
- Command alias
Unix-like text processing
- Unix text tools
- Regular expressions
- Replacement expressions
- Global substitution with regular expressions
- Extracting data from text file table
- Script snippets for piping commands
Debian package management
Debian package management prerequisites
- Package configuration
- Basic precautions
- Life with eternal upgrades
- Debian archive basics
- Package dependencies
- The event flow of the package management
- First response to package management troubles
Basic package management operations
- apt-get/apt-cachevs.aptitude
- Basic package management operations with the commandline
- Interactive use of aptitude
- Key bindings of aptitude
- Package views under aptitude
- Search method options with aptitude
- The aptitude regex formula
- Dependency resolution of aptitude
- Package activity logs
Examples of aptitude operations
- Listing packages with regex matching on package names
- Browsing with the regex matching
- Purging removed packages for good
- Tidying auto/manual install status
- System wide upgrade
Advanced package management operations
- Advanced package management operations with commandline
- Verification of installed package files
- Safeguarding for package problems
- Searching on the package metadata
Debian package management internals
- Archive metadata
- Top level "Release" file and authenticity
- Archive level "Release" files
- Fetching of the metadata for the package
- The package state for APT
- The package state for aptitude
- Local copies of the fetched packages
- Debian package file names
- The dpkg command
- The update-alternative command
- The dpkg-statoverride command
- The dpkg-divert command
Recovery from a broken system
- Incompatibility with old user configuration
- Different packages with overlapped files
- Fixing broken package script
- Rescue with the dpkg command
- Recovering package selection data
Tips for the package management
- How to pick Debian packages
- Packages from mixed source of archives
- Tweaking candidate version
- Updates and Backports
- Automatic download and upgrade of packages
- Limiting download bandwidth for APT
- Emergency downgrading
- Who uploaded the package?
- The equivs package
- Porting a package to the stable system
- Proxy server for APT
- Small public package archive
- Recording and copying system configuration
- Converting or installing an alien binary package
- Extracting package without dpkg
- More readings for the package management
The system initialization
- An overview of the boot strap process
- BIOS, boot loader, mini-Debian system
- The meaning of the runlevel
- The configuration of the runlevel
- The runlevel management example
- The default parameter for each init script
- The hostname
- The filesystem
- Network interface initialization
- Network service initialization
- The system message
- The kernel message
- The udev system
- The kernel module initialization
Authentication and Security
- Normal Unix authentication
- Managing account and password information
- Good password
- Creating encrypted password
- PAM and NSS
- Configuration files accessed by the PAM and NSS
- The modern centralized system management
- "Why GNU su does not support the wheel group"
- Stricter password rule
- Other access controls
- sudo
- SELinux, Apparmor
- Restricting access to some server services
- Security of authentication
- Secure password over the Internet
- Secure Shell
- Extra security measures for the Internet
- Securing the root password
Network setup
The basic network infrastructure
- The domain name
- The hostname resolution
- The network interface name
- The network address range for the LAN
- The network device support
The modern network configuration for desktop
- GUI network configuration tools
The low level network configuration
- Iproute2 commands
- Safe low level network operations
Network optimization
- Finding optimal MTU
- Setting MTU
- WAN TCP optimization
Netfilter infrastructure
Network applications
The mail system
- Modern mail service basics
- The mail configuration strategy for workstation
Mail transport agent (MTA) and Mail user agent (MUA)
- Overview of exim4
- Basic MUA- Mutt
Mail delivery agent (MDA) with filter
- maildrop configuration
- procmail configuration
- Redeliver mbox contents
POP3/IMAP4 server
The remote access server and utility (SSH)
- Basics of SSH
- Port forwarding for SMTP/POP3 tunneling
- Connecting without remote passwords
- Dealing with alien SSH clients
- Setting up ssh-agent
- How to shut down the remote system on SSH
- Troubleshooting SSH
Other network application servers
Other network application clients
The diagnosis of the system daemons
The X Window System
- Setting up desktop environment
- The server/client relationship
- The X server
- Starting the X Window System
- Starting X session with gdm
- Customizing the X session (classic method)
- Customizing the X session (new method)
- Connecting a remote X client via SSH
- Secure X terminal via the Internet
- X applications
- X office applications
- X utility applications
System tips
The screen program
- The use scenario for screen(1)
- Key bindings for the screen command
Data recording and presentation
- The log daemon
- Log analyzer
- Recording the shell activities cleanly
- Customized display of text data
- Customized display of time and date
- Colorized shell echo
- Colorized commands
- Recording the editor activities for complex repeats
- Recording the graphic image of an X application
- Recording changes in configuration files
Data storage tips
- Disk partition configuration
- Accessing partition using UUID
- Filesystem configuration
- Filesystem creation and integrity check
- Optimization of filesystem by mount options
- Optimization of filesystem via superblock
- Optimization of hard disk
- Using SMART to predict hard disk failure
- Expansion of usable storage space via LVM
- Expansion of usable storage space by mounting another partition
- Expansion of usable storage space using symlink
- Expansion of usable storage space using aufs
Data encryption tips
- Removable disk encryption with dm-crypt/LUKS
- Encrypted swap partition with dm-crypt
- Automatically encrypting files with eCryptfs
- Automatically mounting eCryptfs
Monitoring, controlling, and starting program activities
- Timing a process
- The scheduling priority
- The ps command
- The top command
- Listing files opened by a process
- Tracing program activities
- Identification of processes using files or sockets
- Repeating a command with a constant interval
- Repeating a command looping over files
- Starting a program from GUI
- Customizing program to be started
- Killing a process
- Scheduling tasks once
- Scheduling tasks regularly
- Alt-SysRq key
System maintenance tips
- Who is on the system?
- Warning everyone
- Hardware identification
- Hardware configuration
- System and hardware time
- The terminal configuration
- The sound infrastructure
- Disabling the screen saver
- Disabling beep sounds
- Memory usage
- System security and integrity check
The kernel
- Kernel parameters
- Kernel headers
- Compiling the kernel and related modules
- Compiling the kernel source: Debian standard method
- Compiling the module source: Debian standard method
- Non-free hardware drivers
Virtualized system
- Virtualization tools
- Virtualization work flow
- Mounting the virtual disk image file
- Chroot system
- Multiple desktop systems
Data management
Sharing, copying, and archiving
- Archive and compression tools
- Copy and synchronization tools
- Idioms for the archive
- Idioms for the copy
- Idioms for the selection of files
- Backup and recovery
- Backup utility suites
- An example script for the system backup
- A copy script for the data backup
- Removable storage device
- Sharing data via network
- Archive media
The binary data
- Viewing and editing binary data
- Manipulating files without mounting disk
- Data redundancy
- Data file recovery and forensic analysis
- Splitting a large file into small files
- Clearing file contents
- Dummy files
- Erasing an entire hard disk
- Erasing unused area of a hard disk
- Undeleting deleted but still open files
- Searching all hardlinks
- Invisible disk space consumption
Data security infrastructure
- Key management for GnuPG (signing and encrypting)
- The MD5 sum
35 Hours
Testimonials (5)
I liked that we also had to do exercises with each new thing learned
Daria
Course - Intermediate Unix
- adapting to all course participants - cool, illustrative examples
Katarzyna - Rossmann SDP Sp. z.o.o
Course - Introduction to Linux
Machine Translated
The right person in the right place, the presenter was brilliant, he presented the issues in an accessible way, explained them in detail, looked for solutions to problems, the pace of work was adequate to the issues discussed, plus perfect diction and a radio voice that made the presenter very easy to listen to. It was clear that this topic was his passion, he talked about it with great passion and commitment
Magdalena - Aplitt Sp. z o.o.
Course - Linux System Administration
Machine Translated
Very well structured and delivered information, a lot of practical exercises to help the knowledge transfer, the trainer responded to every question and helped everyone.
Catalin - DB Global Technology
Course - Linux Administration Fundamentals
Wojciech and NobleProg focused the itinerary to feet my needs.
