You want to redirect the output of the ls command to the ls-output file which already exists. The output should be appended to the file; it should not overwrite the existing content. Which command accomplishes this task?
You have a /tmp/data directory containing the files .file, file1, and file2. You want to delete the directory and its content. In a terminal window, which command accomplishes this?
You want to delete a certain print job from the laser print queue. Using the lpq command, you determined the job number of this job as 1234. Which command lets you delete that job?