input : shell commands filtering : remove semi-colon and all invalid filenames and chars in paths sink : run ls in a dir

Command line args filtering : check if there is only numbers sink : run ls in a dir

Command line args filtering : check if there is only numbers sink : run ls in a dir

Command line args filtering : check if there is only numbers sink : run ls in a dir

Command line args filtering : check if there is only numbers sink : run ls in a dir

Command line args filtering : check if there is only numbers sink : run ls in a dir

Command line args filtering : check if there is only numbers sink : run ls in a dir

Command line args filtering : check if there is only numbers sink : run ls in a dir

Command line args filtering : check if there is only numbers sink : run ls in a dir

Command line args filtering : check if there is only numbers sink : run ls in a dir

Command line args filtering : check if there is only numbers sink : run ls in a dir

Command line args filtering : check if there is only numbers sink : run ls in a dir

Command line args filtering : check if there is only numbers sink : run ls in a dir

Command line args filtering : check if there is only numbers sink : run ls in a dir

Command line args filtering : check if there is only numbers sink : run ls in a dir

Command line args filtering : check if there is only numbers sink : run ls in a dir

Command line args filtering : check if there is only numbers sink : run ls in a dir

Command line args filtering : check if there is only numbers sink : run ls in a dir

Command line args filtering : check if there is only numbers sink : run ls in a dir

Command line args filtering : check if there is only numbers sink : run ls in a dir

Command line args filtering : check if there is only numbers sink : run ls in a dir

Command line args filtering : check if there is only numbers sink : run ls in a dir

Command line args filtering : check if there is only numbers sink : run ls in a dir

Command line args filtering : check if there is only numbers sink : run ls in a dir

Command line args filtering : check if there is only numbers sink : run ls in a dir