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42FileChecker Manual

• Known Issues
• What is Bash
• What is a bash script
• What is 42FileChecker
• Contributing to 42FileChecker
  • Tip: Rebasing a Pull Request
• Bash syntax: Variables
  • 1. Declaration
  • 2. Substitution
  • 3. Positional and special parameters
• Bash syntax: Conditions
  • 1. Conditional expressions
  • 2. If-then-else
  • 3. Case-in
• Bash syntax: Functions
  • 1. Syntax of a function
  • 2. Local and global variables
  • 3. Arguments of a function
  • 4. Passing an array as argument
• Bash builtin commands
• Bash tools: Awk
  • 1. How to use AWK
  • 2. How works AWK
  • 3. AWK built-in variables
  • 4. BEGIN and END statements
  • 4. Simple AWK examples
• Bash tools: Cat
• Bash tools: Grep
• Bash tools: Sed
• Bash sample code: auto-update (git tool)
• Bash sample code: Create an interactive menu
  • Sample code
  • Tip: Convert ASCII number into numeric value
  • Tip: Check if an index is valid
  • Tip: Evaluate a string as a command line
• Bash sample code: Animated spinner with a time out
  • Sample code
  • Tip: Arithmetic operation with floating numbers
  • Tip: Check if a process ID has terminated
  • Tip: Move the first character to the end of a string
• Bash sample code: static var test
• Bash sample code: Check the basic rules of a makefile
  • Sample code
  • Tip: Check if a file or a directory exists
  • Tip: Read a whole file into a variable
  • Tip: Find a string in a file using awk
  • Tip: Get inode of a file
• Bash sample code: forbidden functions test
• Bash sample code: Memory leak test script
  • Sample code
  • Tip: Execute a program in background and get its process ID
  • Tip: Difference between kill -9 and kill -15
  • Tip: Why using process ID instead of program name
• Bash sample code: Create a speed test
  • Sample code
  • Tip: Redirect outputs of a command line
  • Tip: Count the number of lines of a file
  • Tip: Execute a command and save the result in a variable