The shell redirection that will write standard output and standard error output to a file named `filename` is:
B. `>filename 2>&1`
In this redirection, `>filename` redirects standard output to the file `filename`, and `2>&1` redirects standard error (file descriptor 2) to the same location as standard output (file descriptor 1), which is the file `filename`. This way, both standard output and standard error are written to the same file.
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DuboisNicolasDuclair
1 year, 4 months ago