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 NAME     
 SYNOPSIS     
 DESCRIPTION     
 |  |  |  | Echo writes its arguments separated by blanks and terminated by
    a newline on the standard output. Option −n suppresses the newline. 
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 SOURCE     
 DIAGNOSTICS     
 |  |  |  | If echo draws an error while writing to standard output, the exit
    status is write error. Otherwise the exit status is empty. 
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