jglodek

//Super straightforward on Linux

sudo ssh -N -o StrictHostKeyChecking=no \
    -i ./certs/output/ssh-private-key \
    user@private.host \
    -L 5000:127.0.0.1:5000 
    
docker login localhost:5000 --username registry_user --password registry_password

// On Docker for Mac docker virtual machine has it's own 127.0.0.1 and can access your macbook localhost only via `host.docker.internal`

jglodek

function sequence(number) { return Array.apply(null, {length: number}).map(Function.call, Number);};

const begin = moment("2018.05.05", "YYYY.MM.DD");
const today = moment();
const daysCount = moment().diff(begin, "days");

const days = sequence(daysCount + 1).map((dayNo) => {
  return moment(today).subtract(dayNo, "days").format("YYYY.MM.DD");
})

jglodek

list files
docker ps -a

commit data to images

docker commit 91ea7799154c user/test_image1
docker commit e68f87d44923 user/test_image2
docker commit 439177e1f838 user/test_image3
docker commit 1fbf94e114ff user/test_image4

jglodek

$(cat build.sbt | grep '[ \t]*version :=' | sed 's/.*"\(.*\)".*/\1/')

jglodek

$(cat package.json | grep "version" | sed 's/.*"\(.*\)".*/\1/')

or

$(node -p "require('./package.json').version")

if you have node (not the case for some docker images)

jglodek

# ./p.bin is /opt/docker/p.bin
# 1 is the PID of java
jmap -dump:format=b,file=./p.bin 1 

docker cp <containerId>:/file/path/within/container /host/path/target

docker cp <containerId>:/opt/docker/p.bin .

scp -o StrictHostKeyChecking=no -i $(echo $ssh_private_key_location) user@example.com:/home/core/p.bin .

jglodek

#We're creating a nginx + a ECHO SERVER
# in nginx we play around the config
# echo server will show us the WYMIWYG (WHAT YOU MEAN IS WHAT YOU GET) when we do requests to the nginx

# run containers for debug
docker run --detach --name nginx -p 80:80 nginx
docker run --detach --name echo -P jmalloc/echo-server

# enter the server
docker exec -ti nginx bash

jglodek

# find icloud files
cd $HOME/Library/Mobile Documents/com~apple~CloudDocs

# test run crontab 
find $HOME/Library/Mobile\ Documents/com\~apple\~CloudDocs -type d -name node_modules -exec touch {}/.nosync \;

# add crontab with vim so it runs every couple of hours
EDITOR=vim crontab -e

0 */2 * * * find $HOME/Library/Mobile\ Documents/com\~apple\~CloudDocs -type d -name node_modules -exec touch {}/.nosync \;

jglodek

uploadify() {
    echo "echo '"${$(cat $1 | base64)}${$(echo "' | base64 --decode > $1")}
}

#usage uploadify logo.png
#copy + paste on any terminal anywhere in the interwebs

jglodek

#command that says battery low if <8% 
ioreg -l |awk 'BEGIN{FS="=";max=0;cur=0;} $1~/CurrentCapacity/{cur=$2}  $1~/MaxCapacity/{max=$2} END{if (cur/max*100<8) {"say battery low" | getline result} else {print "battery OK"}}'

#crontab editor 
crontab -e

#crontab entry that does this once every 60s
* * * * * ioreg -l |awk 'BEGIN{FS="=";max=0;cur=0;} $1~/CurrentCapacity/{cur=$2}  $1~/MaxCapacity/{max=$2} END{if (cur/max*100<8) {"say battery low" | getline result} else {print "battery OK"}}'