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Linux top 50 cmd - Rm

rm is used to delete specified files. With the -r option (Warning: This can be dangerous!), rm will recursively remove files. Therefore if, as root, you type the command rm -r /, you had better have a good backup because all your files are now gone. This is a good command to use in conjunction with the find command to find files owned by a certain user or in a certain group, and delete them. By default, the rm command does not remove directories.