Workbook 2 Filesystem Basics: Chapter 6 Examining Files

Question 1

What command tells you a file’s type (ex: HTML document, MP3, gzip, etc)?

Answer 1

file command [56]

Question 2

Using the cat command, how can you output all characters, including control characters?

Answer 2

cat -A [57]

Question 3

Using the cat command, how can you number line output?

Answer 3

cat -n [57]

Question 4

Using the cat command, how can you “ Squeeze” multiple adjacent blank lines into a single blank line

Answer 4

cat -s [57]

Question 5

What navigation command in less and more moves you back one full screen?

Answer 5

PgUp [57]

Question 6

How many lines do the head and tail command output by default?

Answer 6

10 lines [58]

Question 7

Using the head command, give two command lines that output the first 5 lines of file1 and that suppress the header lines.

Answer 7

head -n 5 -q [58]

Question 8

Using the tail command, give one command lines that output the last line of every file in /etc
and that suppress the header lines.

Answer 8

tail -n 1 -q /etc* [60]

Question 9

Give one application of the tail command’s –f option.

Answer 9

tail -f is a follow switch that appended to a file [60]