Index
A note on the digital index
A link in an index entry is displayed as the section title in which that entry appears. Because some sections have multiple index markers, it is not unusual for an entry to have several links to the same section. Clicking on any link will take you directly to the place in the text in which the marker appears.
Symbols
- & (ampersand), Example #1
- && (Boolean and), Example #1
- < > (angle brackets), Functions
- ' (backquotes), Command substitution, Checking process status and sending alerts
- command quoting in bash, Checking process status and sending alerts
- command substitution, Command substitution
- \ (backslash), Objective 1: Work on the Command Line
- escaping shell metacharacters, Objective 1: Work on the Command Line
- ^ (caret), beginning of line matching in regular expressions, mod_rewrite
- { } (curly braces), enclosing function body, Functions
- $ (dollar sign), Conventions Used in This Book, Aliases, Configuration files, File tests, Variables, Checking process status and sending alerts
- $# variable, Configuration files
- $( ) notation, command quoting, Checking process status and sending alerts
- $? variable, File tests
- in variable names, Aliases, Variables
- user prompt, Conventions Used in This Book
- ! (exclamation mark), Boolean not operator, Example #1
- # (hash mark), Conventions Used in This Book, /etc/printcap, Configuration files, Executable files, bash
- #! (she-bang line), Executable files
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