Linux cheatsheet

# open/edit the GHC compiler seetings
code $(stack ghc -- --print-libdir)/settings

# searh process using the port
lsof -i tcp:<port>

# kill a process
sudo kill -9 <pid>

# list process
ps auxwww

# resourcs usages
htop

# stop ntp
sudo service ntp stop

#change server time
sudo date -s '2016-11-01 04:58:00'

# Adding SSH identitites/keys to terminal session
ssh-add ~/.ssh/id_rsa

# Switching ssh port to 443
sed -i 's/Port 22/Port 443/' /etc/ssh/sshd_config

# Restarting ssh
systemctl restart ssh

# List mounted devices
df -h

# List file sizes
du -h

# Monitor the ouput of a command in real time
watch <comman>
# i.e.: watch df -h

# File to add SSH Keys
nano ~/.ssh/authorized_keys

# List open ports
netstat -l

# Show current net iface IP
ifconfig |grep inet

# Nginx
# Checking if the config files are okay
sudo nginx -t

# Cheking the logs of a service
sudo journalctl -u <service-name>

# Restartin audio devices on a mac
sudo kill -9 `ps ax|grep 'coreaudio[a-z]' | awk '{print $1}'`