These are symbols that you can use at the Unix shell prompt as part of a command.
SymbolMeaning
|a Unix pipe
>redirect standard output
<redirect standard input
>>redirect and append standard output
;separate commands on same line
( )group commands on same line
/separator in a pathname
~(tilde) your home directory
~johnthe home directory of the user john
.present working directory
..parent of present working directory
*Wildcard match of any number of charcters in a filename
?Wildcard match of exactly one character in a filename
[ ]Wildcard match of any one character enclosed in these brackets in a filename
&process command in background
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