I'm checking commands that are being executed and I noticed these commands have been run. Are these normal commands and what are they doing?

1 Answer 1


Yes, they are a normal part of any Linux system.

groff is a text formatting program that is used to format and display man pages.

grotty, troff, nroff and preconv are helper programs used by groff. See their man pages (man grotty, man troff, ...) if you want to know the details.

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