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Unix Quiz Unix

Point out the incorrect statement regarding standard input , output and error :

The terminal is the standard source for input and the standard output and standard error destination for most UNIX commands
All data sources and destinations are treated as files in UNIX.
The three standard files have a file descriptor 0 - standard output file 1 - standard input file 2 - standard error file
The input , output and error output can be redirected to a file other than the standard file using file descriptors and the > or < symbol.
The output and error can be redirected in the append mode to add the redirected output or error to an existing file using the >> symbol.

Answer:
The three standard files have a file descriptor 0 - standard output file 1 - standard input file 2 - standard error file

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