Special symbols in the shell

* Multiple

? 1 x

# annotation Characters

\ de-Righteous characters

| Pipe character

$ as a prefix for variables, used for variables

!$ using the last parameter of the previous command

; Used in the middle of two commands to write in one line

~ User's Home directory

& command dropped into the background like sleep &

> Redirection

>> Chasing heavier orientation

2> Error Redirection

2>> Error Append redirect

< reverse redirect

[] denotes one of the ranges such as [0-9]

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Special symbols in the shell