User and host name

Add or change user in Linux

See http://www.debianadmin.com/...

sudo adduser <username>  
(setting password is automatically asked, and home directory created)

then set the home dir of new user to be owned by new user, with sudo chown <user>:<user> /home/<user>  

to make the new user belong to same groups as first user, find groups of the first user with..
groups <user>  
then add the new user to each group..
sudo adduser <user> <group>  


also, add the new user to the sudoers file, or sudo group

If replacing the first user (i.e. changing the name) copy content of /home/first-user to /home/new-user with.. sudo rsync -arult /home/olduser/* /home/newuser  
to remove a user..
sudo userdel <user>  
or to remove the home dir with it
sudo userdel -r <user>  

Problems may start appearing, like MLT in kdenlive calling all clips invalid, ffmpeg cannot open filters.... so these need permissions changed in the right places, or else re-installing them if in the case of migrating to a new user.


Change the host/server name
sudo nano /etc/hostname /etc/hosts  
change it in those files - twice in /etc/hosts

then restart the server
sudo sh -c /etc/init.d/hostname.sh start