What command would you use to create an empty file without opening it to
edit it? create [filename] touch [filename] mkfile [filename]. What command would be best if you will looking for specific text within a file(s)? sed grep awk. What should you type to send the last 20 lines of a text file to STDIN? last –n 20 [filename] end -20 [filename] tail -20 [filename]. Which commands can you use to list all files in current directory? ls -al dir -v list -all. The command output can be sent to files using what special symbol? | > &. What character would you use to negate a range of characters in a regular expression? % ^ !. What command would you use to find all files under the current directory whose owner is not root? find ./ -type f ! -user root find ./ -type f ! -owner root find ./ -not -type f -user root. What command is the best for determine file type or contents? wich type file.