Cybersecurity Ops with bash

Index

Symbols

• ! (exclamation mark)
  • bang, Implementation, Implementation
  • negating characters in pattern matching, Pattern Matching in bash
• !! (history) operator, Searching by File Size
• " " (quotation marks, double)
  • field separator in user-agent strings, Identifying Anomalies in Data
  • no pattern matching in, Pattern Matching in bash
  • surrounding strings in echo command, Variables
• #! (shebang) line, From Command Line to Script
• $ (dollar sign)
  • bash prompt, Command-Line Illustrations
  • in regular expressions, Anchors and Word Boundaries
  • inside double parentheses, Conditionals
  • preceding variable names, Variables, Gathering Windows Logfiles
• $# shell variable
  • giving total number of function arguments, Function Arguments
  • returning total number of parameters in a script, Positional Parameters, Gathering Windows Logfiles
• $'string' construct, Gathering Windows Logfiles
• $( ) syntax, Checking for a Breached Email Address
  • running command in a subshell, Variables
  • running function in a subshell, Returning Values
• $(( )) dollar-double-parens syntax, Creating Your Own Crypto
• $0 identifier
  • functions and, Function Arguments
  • parameter holding script name, Positional Parameters
• $1, $2, etc. (positional parameters), Looping, Gathering Windows Logfiles
  • for parameters passed into scripts, Positional Parameters
  • indicating function arguments, Function Arguments
  • shifting, Searching by File Type
• $? variable, Conditionals, Searching by File Type, Implementation, Implementation
• $HOSTNAME variable, Implementation
• $PATH variable, Identifying Other ...