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Overview

linux

Linux Commands

Change owner of a folders recursively
sudo chown -R work ./

Check OS

cat /etc/os-release

List users

cat /etc/passwd

Change password

sudo passwd <username>

Check storage

df -h 
sudo fdisk -l

List all Users

awk -F: '{ if ($3 >= 1000 && $3 != 65534) print $1 }' /etc/passwd

List all groups

cat /etc/group

Create a group

sudo groupadd docker

Create user

sudo adduser bitwarden
sudo passwd bitwarden

Login to a specific user

su bitwarden

Add user to a group

sudo usermod -aG docker bitwarden

Change permission of directory

sudo chmod -R 700 /opt/bitwarden
sudo chown -R bitwarden:bitwarden /opt/bitwarden

Check networks reachability

ping <private_ip> 5433

telnet <private_ip> 5433

port already in use troubleshooting

sudo lsof -i :8080
kill <pid_number>

Watch gpu

watch -n 1 nvidia-smi

Watch cpu temp

  • sudo apt install lm-sensors
watch -n 2 sensors

Watch cpu MHz

watch -n 1 "cat /proc/cpuinfo | grep 'MHz'"