Redirect all output to file in Bash [duplicate]

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I know that in Linux, to redirect output from the screen to a file, I can either use the > or tee. However, I’m not sure why part of the output is still output to the screen and not written to the file.

Is there a way to redirect all output to file?

9 s
9

That part is written to stderr, use 2> to redirect it. For example:

foo > stdout.txt 2> stderr.txt

or if you want in same file:

foo > allout.txt 2>&1

Note: this works in (ba)sh, check your shell for proper syntax

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