Final answer:
To redirect stdin, you can use the '<' symbol followed by the input file name. To redirect stdout, you can use the '>' symbol followed by the output file name. To redirect stderr, you can use the '2>' symbol followed by the error file name. To redirect both stdout and stderr to the same file, you can use the '>' symbol followed by the file name.
Step-by-step explanation:
Redirecting stdin, stdout, and stderr is a common task in computer programming. To redirect stdin, you can use the '<' symbol followed by the input file name to specify a file as the input source. For example, 'program < input.txt' will read input from the 'input.txt' file instead of the standard input.
To redirect stdout, you can use the '>' symbol followed by the output file name to specify a file as the output destination. For example, 'program > output.txt' will write the program's output to the 'output.txt' file instead of the standard output.
Similarly, to redirect stderr, you can use the '2>' symbol followed by the error file name to specify a file as the error destination. For example, 'program 2> error.txt' will write the program's error messages to the 'error.txt' file instead of the standard error.
If you want to redirect both stdout and stderr to the same file, you can use the '>' symbol followed by the file name for both stdout and stderr redirection. For example, 'program > output.txt 2>&1' will redirect both stdout and stderr to the 'output.txt' file.