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→Redirection (Standard Input, Standard Output, Standard Error)
[[Image:stdin-symbol.png|thumb|right|250px|The '''standard input''' ('''stdin''') symbol that describes where a Unix/Linux command receives '''input''']]
'''Standard input''' ('''stdin''') is a term which describes from where a command receives '''input'''.<br>
This would apply only to Unix/Linux commands that accept stdin input <br>(like ''cat'', ''more'', ''less'', ''sort'', ''grep'', ''head'', ''tail'', ''tr'', ''cut'', ''wc'', etc.).<br>
''Examples:''
