CUSP PUI - Class 1

CUSP 2018

Using Docker Image

CUSP 2018

Using Docker Image

Using Docker Image

Using Docker Image

CUSP 2018

CUSP 2018

Demystifying

HANDS ON

Demystifying

HANDS ON

- Download the github repo: 
https://github.com/Mohitsharma44/ucsl-image

- Make sure you have done the following:

    # created an account on https://hub.docker.com
    # installed docker
    # installed docker-compose^
    # pulled the ucsl-image
(docker pull mohitsharma44/ucsl-image:latest)

^ Linux users: 
​- sudo curl -L https://github.com/docker/compose/releases/download/1.22.0/docker-compose-$(uname -s)-$(uname -m) -o /usr/local/bin/docker-compose.
- sudo chmod +x /usr/local/bin/docker-compose

Demystifying

HANDS ON

Make sure everything is working

docker --version

docker-compose --version

:Make sure you get No Errors:

Demystifying

HANDS ON

Fire up the container

cd ucsl-image/image

docker-compose up
(you can pass -d flag to run it as daemon)

HANDS ON

Demystifying

Saving the Current state of Container

docker commit -m "Added x package" 
ucsl-container mohitsharma44/ucsl-image:latest

docker commit -m <commit_msg> <container_id/name>

<repository>:[tag]

e.g.

CUSP 2018

Demystifying

Pushing an image to a registry^

docker push mohitsharma44/ucsl-image:latest

docker push <repository>:[tag]

e.g.

CUSP 2018

^ We will be using docker hub, so create an account first.

^ You may also need to type docker login in the terminal.

HANDS ON

Demystifying

docker stop ucsl-container -t 5

docker stop <container_name/id> [-t time_to_kill]

e.g.

^ Just stopping the container will not delete your data

CUSP 2018

HANDS ON

Demystifying

docker rm -f ucsl-container

docker rm -f <container_name/id>

e.g.

^ To remove an already stopped container, don't use -f flag

CUSP 2018

HANDS ON

CUSP 2018

CUSP 2018

Learning by doing

Fire up your terminal

CUSP 2018

Learning by doing

1. Open your File Browser 
2. go to Downloads directory

cd ~/Downloads

~ is the expansion of your home directory

Changing directory

CUSP 2018

Learning by doing

1. Open your File Browser 
2. go to Downloads directory

ls -lht ~/Downloads

~ is the expansion of your home directory

long format

human readable format

sort by time

Listing contents of a directory

CUSP 2018

Learning by doing

1. Open your File Browser
2. Go to Downloads 
3. Click on New Folder. 
4.Name it PUIrocks

mkdir ~/Downloads/PUIrocks

~ is the expansion of your home directory

Creating directorY

CUSP 2018

Learning by doing

1. Open your File Browser
2. Go to Downloads
3. Right-Click on PUIrocks -> Delete

rm -rf ~/Downloads/PUIrocks

~ is the expansion of your home directory

Removing directories

recursive

force

CUSP 2018

Learning by doing

1. Open your File Browser

pwd

current working directory

CUSP 2018

Learning by doing

1. Open your File Browser
2. Go to A, Right Click -> Copy
3. Go to B, Right Click -> Paste

cp -rp /path/to/A /path/to/B

copying files from A to B

recursive

preserve:
timestamps
ownership
mode

CUSP 2018

Learning by doing

1. Open your File Browser
2. Go to A, Right Click -> Move
3. Go to B, Right Click -> Paste

mv /path/to/A /path/to/B

Moving files from A to B

Mac doesn't have Move to option

CUSP 2018

Learning by doing

1. Open your File Browser
2. Go to Directory with the file.
3. Open the file

more /path/to/file

Print contents of file

cat -l /path/to/file

line numbers

less /path/to/file

most /path/to/file

CUSP 2018

Learning by doing

1. Open your File Browser
2. Type string in search bar

grep -rli "foo" /path/to/*.py

Find a string in File/ Directory

recursively

file name

ignore case

wild card

CUSP 2018

Learning by doing

1. fuhgeddaboudit

redirecting I/O

Learning by doing

redirect output of one command as an input to the next

Counting number of directories

ls ~/Downloads | wc -l

pipe

line count

Output to a file

echo "Hello World" > myfile.txt

echo "Bye" >> myfile.txt

overwrite

append

Learning by doing

process manipulation

List all processes

ps -ef

Find your specific process

ps aux

OR

CUSP 2018

ps -ef | grep -i <parent_process>

Learning by doing

process manipulation

Kill specific Process

CUSP 2018

1. ps -ef | grep -i <parent_process>
2. kill -9 <pid>

OR

pkill -9 <name>

Learning by doing

history

Access history

CUSP 2018

history

reverse-i-search

ctrl + r