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 ⌘ Web Mechanic ⌘ 

Bash Scripting

 metacharacters 

These are 'special' characters, and mean different things depending on how they are used.

They are: space, tab, newline and any of these:

‘|’, ‘&’, ‘;’, ‘(’, ‘)’, ‘<’, or ‘>’

Typically they just separate words, but if you DO need to use them they need to be quoted.