Table of contents

• IT at D-PHYS
  • IT Services Group (ISG)
  • How IT works at D-PHYS
    • The players
    • Accounts
    • Main IT services provided by ISG
  • Some pieces of advice from us. Pretty please with sugar on top.
  • Where to go from here?
• IT and Information Security
• Linux Basics (I)
  • Index
    • Introduction to Linux
    • File systems
    • File Permissions
    • Secure Shell (SSH)
    • Regular expressions
    • Basic shell commands
• Introduction to Linux
  • Index
    • Operating Systems
    • Open source software
    • Command Line Interface (CLI)
• Operating Systems
  • The Linux kernel
  • Multi-user systems
    • Users
    • Groups
• Open source software
  • Linux distributions
• Command Line Interface (CLI)
  • Terminal emulators
  • Shell
• File systems
  • Index
    • File names
    • Hard links
    • Single directory tree
• File names
  • Absolute and relative paths
  • More absolute paths
  • Hidden files
• Hard links
  • Directory Entries and Index Nodes
• Single directory tree
• File Permissions
  • Index
    • Basic file permissions
    • Representation of file permissions
• Basic file permissions
  • Access types
    • File access
    • Directory access
  • Access classes
  • Special permissions
    • Special permissions on files
    • Special permissions on directories
• Representation of file permissions
  • Symbolical representation
  • Numerical representation
• Secure Shell (SSH)
  • Index
    • First time connections
    • SSH login with password
    • Public Key Cryptography
    • Generating SSH keys
• First time connections
• SSH login with password
• Public Key Cryptography
• Generating SSH keys
  • Authorized keys
  • Graphical programs
• Regular expressions
  • Index
    • POSIX regular expressions
    • Shell Globbing
• POSIX regular expressions
  • Characters
  • Character classes
  • Quantifiers
    • Greedy and reluctant matches
  • Alternatives
  • Groups
• Shell Globbing
  • Path name expansion
    • Expandable expressions
  • Examples
• Basic shell commands
  • Index
    • Basic file operation using the command line
    • manipulate files
    • ls - List files
    • top - Interactive view of system resources and processes
    • man - View documentation
• Basic file operation using the command line
  • Changing the working directory
  • Inspecting directory contents
  • Creating and deleting directories
  • Moving and renaming files
• manipulate files
• ls - List files
  • File type
  • permissions
  • modification time
  • other useful options
• top - Interactive view of system resources and processes
• man - View documentation
  • Searching man pages
  • man page sections
• Linux Basics (II)
  • Index
    • Input/Output redirection
    • Shell Variables
    • Scripting
• Input/Output redirection
  • Index
    • File Descriptors
    • I/O Redirection
• File Descriptors
  • Representation of File Descriptors
  • Standard File Descriptors
• I/O Redirection
  • Redirection Operators
• Shell Variables
  • Index
    • Variables
    • Defining Variables
    • Important environment variables
    • Permanent changes to the environment
• Variables
  • Names
  • Types
  • Exception to Inheritance
• Defining Variables
  • Inspecting Variables
  • Using Variables
  • Special variables
• Important environment variables
• Permanent changes to the environment
  • User specific environment
  • Systemwide environment
• Scripting
  • Index
    • Script Interpreter
    • Conditional Statements
    • Tests
    • Loops
• Script Interpreter
• Conditional Statements
• Tests
  • Test operations
    • Numerical comparison
    • String comparison
    • File tests
    • Boolean operators
• Loops
  • Loop-while and Loop-until
• Python Ecosystem (I)
  • Index
    • Interpreter Management
    • Package Management
    • Virtual Environments
    • Tools around pip and venv
    • Best Practices
    • Noteworthy Packages
• Python Ecosystem (II)
  • Index
    • Editors, IDE and REPL
    • Formatter and Linter
    • String Formatting
    • Regular Expressions
• Python Ecosystem (III)
  • Index
    • Reading and writing files
    • Data types and file formats
    • Reading config parameters
    • Automation
• System aspects
  • Anatomy of a scientific computing problem
    • The science part
    • The computing part
    • Data analysis
  • Computational limits
    • Implementation or algorithmic challenges
    • Computational limits induced by hardware
  • The hardware itself
  • The “size” of a scientific computing problem
    • Yes, it fits
    • No, it doesn’t fit
  • Hardware architectures and limiting interconnects
    • The CPU
    • Single-CPU node
    • Non-uniform memory architecture
    • Cluster
    • Cloud
  • Implications and specialities
    • Keeping everything busy
    • Parallelism vs IPC costs
    • SIMD
  • Storage
    • Local storage
    • Network storage
    • Storage as a bottleneck
  • Limits revisited
    • Yes, independent tasks
    • No, I have communication between my tasks
  • The software side
    • Programming languages
    • Optimizations
  • Tips, hints and anecdotes
  • Web content
  • Glossary