0.0:Prints all lines of a file that contain a string 0.1:Count the number of lines that contain string 0.2:Ignore case 0.3:Number the displayed lines, starting at 1 0.4:Print lines that do not contain the string 1.0:file 1.1:string 2.0:Cannot open file 2.1:No such file 2.2:Cannot change to directory