Ubuntu know username

whoami
or
echo $USER

Change username ubuntu

# -l changes login name
# -d changes home directory
# -m copies over contents from old home directory
usermod -l <newname> -d /home/<newname> -m <oldname>

# NOTE: will not work if you are currently logged on as user
# - workaround by temporarily enabling root account and running above command there
# [sudo passwd root] 
# - after root account has been used to change username lock it using
# [sudo passwd -l root]

Source: hepeng.me

Ubuntu know username

echo $USER

Source: askubuntu.com

Similar codes

0 vote306 views1 answer
Set mdp user ubuntu
Shell/Bash
10 votes311 views4 answers
Expo install
Shell/Bash
0 vote324 views3 answers
Ubuntu Not Found The requested URL was not found on this server. Apache/2.4.41 (Ubuntu) Server at localhost Port 80
Shell/Bash
3 votes358 views1 answer
Find how many lines in a file linux
Shell/Bash
0 vote315 views1 answer
Remote root directory jenkins centos
Shell/Bash
0 vote269 views1 answer
Linux grep regex return match
Shell/Bash
0 vote280 views1 answer
Cognito terraform module
Shell/Bash
0 vote295 views1 answer
Ubuntu bionic update security has sum mismatch
Shell/Bash
1 vote256 views1 answer
How to kill all tmux sessions (or at least multiple sessions) from the CLI?
Shell/Bash
1 vote274 views1 answer
Vscode disable powershell integrated console
Shell/Bash