Linux commands

Directory

Create directory with perms and cd to it

 mkdir -m 777 <dirname> && cd "$_"

df -h
du -h --max-depth=1 /var/lib/docker/vfs/dir

realpath

Sed

sed -i 's/#net.ipv4.ip_forward=1/net.ipv4.ip_forward=1/g' /etc/sysctl.conf

SSH

SSH tunneling

• 1.1.1.1 host
• 22 SSH port
• 3333 VNC port

ssh -p 22 -L 3333:localhost:3333 1.1.1.1 -i .ssh/id_ecdsa

SSH config

Edit file in .ssh/config

Host *
    AddKeysToAgent yes
    ServerAliveInterval 120
    ServerAliveCountMax 2

Host jump-server
    User root
    Hostname 8.8.8.8
    IdentityFile /home/juraj/.ssh/juraj_openssh

Host server2
    User root
    Hostname 1.1.1.1
    Port 22
    ProxyCommand ssh -q -W %h:%p jump-server

Docker

docker stat
watch docker ps -a
docker ps -a
docker images
docker logs -f <container>
docker build --network host -t tunnel .
docker-compose up -d
docker run -d --name <container_name> --network host --cap-add=NET_ADMIN,NET_RAW <image_name>
docker exec -it <container_name> /bin/bash
docker rm <container>
docker kill <container>
docker stop <container>
docker image rm <image>
docker image rm --force <image>
docker rmi $(docker images -q)
docker inspect <container> --format='{{.State.Running}}'
docker inspect <container> --format='{{.State.StartedAt}}'
docker events --filter event=restart
docker events --filter event=restart --since=60m

Curl/Wget

curl --upload-file /tmp/output.pcap https://test.com

Date

date +%s --date '2021-10-26T09:06:37.492700403Z'

Encoding

echo "base64code" | base64 -d

Package Manipulation

Update python packages
https://www.activestate.com/resources/quick-reads/how-to-update-all-python-packages/