Commands Flashcards
How to see your path to the root directory
pwd
delete file1.txt
rm file1.txt
move file1.txt
mv file1.txt file2.txt
create a dir1
mkdir dir1
delete empty directory dir1
rm -d dir1
delete populated dir2
rm -r
change to dir1
cd dir1
see all processes running
ps
delete a single running process
kill [PID]
delete all running processes called Run_Prog
killall Run_Prog
create empty text file1
touch file1.txt
list contents of current directory
ls
what does “echo” do?
prints to the terminal
how to create and move in to ex1.txt
vi ex1.txt
edit in vi
press “i”
get out of edit mode in vi
esc
save in vi
:w
quit in vi
:q
for ping, the _ the number, the better the connection
lower
clear the console
clear
how to display the last 5 commands used
history-5
how to find how ls work
whatis ls
how to find out where python program is located
which python
how to check current memory usage
top
save and quit in vi
:x
what is a kernal?
central component of an operating system that manages operations of computer and hardware.
what are the 3 main parts of a Unix OS?
the kernel, the shell, and user commands and applications
what order do these go in in Unix: Shell, app, kernel, hardware?
app - shell - kernel - hardware
What is the DSN
Deep Space Network
Where are the antennas for the DSN?
- Mojave desert
- outside Madrid Spain
- outside Canberra Australia
If a spacecraft is past the _, the DSN is the only practical way to contact it
Moon
What is the dark room?
The control center for the DSN
_ _ get passed around at mission critical events
Lucky peanuts
The darkroom is called the _ of the _
- center
- universe
how to change back to root directory in one command
cd ~
move file1.txt to directory [dir2]
mv file1.txt /dir2
