Linux wildcard characters

* represents any number of characters

? represents any one character

; delimiters for successive different commands

# configuration file Comments

| Piping

~ User's home directory

- Last directory

$ the symbol to be added before the variable

/ Path delimited symbols

> or 1> Redirect, overwrite

>> Chase weighted, append

< Input REDIRECT

<< Append input Redirection

2> Error Output

' single quotes, no variable substitution function, the output is WYSIWYG

" double quotation marks, with variable displacement function, after parsing the variable output

` anti-quotes, two "middle for command, will be executed first, equivalent $ ()

the middle of {} is a command block combination or a content sequence

! non (not) in logical operation

&& when a command executes successfully, the following command is executed, and the logical operation

|| When an instruction execution fails at the current time, the following instruction is executed, or in the logical operation

.. Top level directory

. current directory

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Linux wildcard characters