command line commands

Question 1

what is the man (command shortcut) command?

e.g. man cat

Answer 1

it gives you the manual for the given command shortcut (in this case, cat, or catalog)

Question 2

what is the cat (file name) command?

Answer 2

you can use cat (file) to print the contents of one file, or more than one by simply adding more arguments to the command line

e.g.
cat laziness.txt impatience.txt

it can also be used with the > command to combine the contents of files INTO new files, like this:
cat laziness.txt impatience.txt hubris.txt > three-virtues.txt

the above would create a new file named “three-virtues.txt”

Question 3

what is the ls (file name) command?

Answer 3

it gives you a list of ALL the files in a directory. simply type the argument “ls” w/nothing else

Question 4

what is the cat (file name) command?

Question 5

what is the pwd command?

Answer 5

it prints the name (file path) of the current working directory

Question 6

what is the ls command?

Answer 6

it gives you a list of files in a directory

Question 7

what is the echo command?

Answer 7

it allows you to write a line of text, and you can write to a file like this:

echo ‘Hello, World!’ > hello.txt

Question 8

what is the mcdir command?

Answer 8

it makes directories, like this:

mcdir parent

Question 9

what is the touch command?

Answer 9

it changes the file timestamp

use the man touch comment for more info

Question 10

what is the mv command?

Answer 10

it allows u to move or rename files

e.g.
mv poikemon pokemon fixes pokemon’s spelling by changing it

Question 11

what is the rm command?

Answer 11

it removes files or directories

e.g.
rm lol.txt for files or
rm kill-me/ for files

Question 12

what is the rm command?

Answer 12

copy files or directories
e.g.
cp and-then.txt no-and-then.txt
copies the former to a new file, the latter