Useful Bash commands

commands.md

Useful Bash Commands

Network

netstat | grep ssh (mac)

netstat -vanp --tcp | grep 8080 (CentOS)

kill -9 <PID>

Git

git blame foo.js

git blame -L 40,60 foo.js (lines between)

NPM

npm list > /dev/null list modules, redirect stderr to black hole

npm list --depth=0 --prod Top level modules only

Bash

time node index.js time a process

rm outfile*.txt Remove files matching patterns

rm sequence_1_{2000..2999}.txt Remove files with numbers in a sequence

cat events.json | sed -e 's/}\,/}/g' > eventsNoCommas.json Substitute pattern using sed

cat events.json | sed -e 's/}\,/}/g' -e 's/foo/bar/' > eventsNoCommas.json Substitute 2 patterns in same script

csplit --prefix=event eventsNoCommas.json '/{/' '{*}' Split file into new files with the prefix 'event', using a pattern (first arg = matches the line from which the selection will be matched)

AWS

aws ec2 start-instances --instance-ids i-07a8794a416aaef84

aws ec2 describe-instance-status --instance-ids i-07a8794a416aaef84

Keyboard

Command	Desc
^ a	Move to start of line
^ e	Move to end of line
^ r	Command back search

Docker

Basic

Command	Desc
docker container ls	list running containers
docker ps	list running containers
docker container ls -a	list all containers
docker image ls	list all images
docker rm <contaner_name/id>	remove a stopped container
docker rm --force <contaner_name/id>	dorce stop and remove a running container

Building images

Command	Desc
docker build -t <image_name> .	create an image from a Dockerfile in cwd

Running containers

Command	Desc
docker run <image_name>	run an image
docker run [OPTIONS] IMAGE [COMMAND] [ARG...]	Run an image
docker run -d training/webapp python app.py	Run an image and use python command to run the app
docker run --name <desired_container_name> <image_name>	run an image and name the container
docker run -d <image_name>	run an image in detached mode
docker run -p 4000:80 <image_name>	map your local 4000 port to port 80
docker start <container_name>	start a container
docker stop <container_name/id>	stop a container
docker exec -it <contaienr_name>	run a command in a started container
docker exec -it puppet bash	attach tty terminal to a running puppet container
docker run -it --link some-redis:redis --rm redis redis-cli -h redis -p 6379