How to Redirect the Standard Input, Output, and ErrorStreams?

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How to Redirect the Standard Input, Output, and ErrorStreams?..

Answer / manavalan

0 (zero) refers to the standard input & often abbreviated as stdin.
1 refers to standard output (stdout)
2 refers to standard error (stderr)

Redirecting Standard Error :

The 2 in 2> refers to stderr.

$ lsash /usr/bin 2> commands-error.txt

Redirecting both Standard Ouput & Standard Error.

Use 2>&1 Syntax to redirect standard error to the same location as standard output .

$ ls /usr2222/bin > command.txt 2>&1

Redirecting Both stderr & stdout at Once

$ ls /usr2222/bin &> command.txt

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