Linux wildcard characters

Wildcard characters are commonly used in bash environments:

* represents all (0 to more) characters

? Represents any of 1 characters

; Delimiters for successive different commands

# Configuration file comments

| Pipeline

~ User's Home directory

-Previous Directory

$ required symbol before the $ variable

/path delimiter

> or 1> Overlay redirect

>> Chasing heavier orientation

< input redirection

<< Append input Redirection

' Single quotation mark does not have variable substitution function, the output is WYSIWYG

"Double quotes with variable substitution function, output after parsing a variable, no quotation marks equivalent to double quotation marks (slightly different when there are parameters)

' Anti-quotes, the middle command will be executed first, equivalent $ ()

The middle of {} is a chunk combination or a content sequence such as: {1..5}, {A. D

! "Non" in logical operation!

&& when a command executes successfully, the following command is executed

|| The current one instruction execution failure is = when the following instruction is executed

.. Top level Directory

. Current directory

Linux wildcard characters