Passing options like -l or --word to commands, or parsing them in scripts

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41 views

Understanding passwd --keep-tokens

On GNU/Linux, I do have trouble understanding the meaning of the --keep-tokens option for passwd. As it doesn't seem to be much used as I am not able to find any examples and only online copies of man ...
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Why is rm -r the same as rm -R?

If you look in the rm man page you see that rm -r, rm -R, and rm --recursive are all the same. -r, -R, --recursive remove directories and their contents recursively When using options, I'm ...
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rpm :deptype flags explained

On Fedora 20 (Heisenbug) I issed the following command … rpm --query --queryformat="%{REQUIREFLAGS:deptype}\n" --all | sort --unique --dictionary-order … to get all possible :deptype ...