find a process
ps -aef
search for string
grep node
find a process called node
ps -aef | grep node
pgrep node
find a process named node and kill it
ps -aef | grep node
kill -9 {pid}
pkill node
follow the tail/end of a text file:
tail -f {logfile}
get help/manual for command:
man {command}
run server in background
nohup node server.js &
check what sudo permissions your user has:
sudo -l
example for running command as sudo:
sudo pkill
yum is the package manager for centOS
yum install {command}
example:
yum install nginx
start/stop nginx service
sudo service nginx {start/stop}
put foreground process to sleep
CONTROL-Z
wake up the last process you put to sleep
fg
show all sleeping processes
jobs
emacs/vi editor
emacs/vi {file}
detach the session and run in the background.
nohup node server.js &
change the default pw through SSH
passwd {username}
**see the menue of nano **
man nano
create account
sudo adduser {your uname}
give the sudo right to new user
sudo visudo
# User privilege specification -----> add new user
give the user ssh right
sudo nano /etc/ssh/sshd_config
#change to no to disable tunnelled clear text passwords ----> PasswordAuthentication yes
restart server
sudo nano /etc/ssh/sshd_config
exit ssh
exit
hide hidden files
defaults write com.apple.finder AppleShowAllFiles -bool {true/false}
start a http server
python -m SimpleHTTPServer 3000