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 vote332 views1 answer
Change run directory dockerfile
Shell/Bash
15 votes349 views6 answers
Flutter app release
Shell/Bash
5 votes351 views1 answer
Npm to fix lint issues
Shell/Bash
8 votes343 views2 answers
Bash switch case
Shell/Bash
0 vote381 views1 answer
How to fix network issues on ubuntu
Shell/Bash
0 vote334 views1 answer
Install Sublime in Linux (Stable)
Shell/Bash
0 vote333 views1 answer
Linssid linux mint 20
Shell/Bash
-1 vote344 views1 answer
Onedrive ubuntu 20.04
Shell/Bash
19 votes389 views2 answers
What to add to gitignore
Shell/Bash
1 vote317 views1 answer
Command line history search
Shell/Bash