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 vote132 views1 answer
Unix delete file contents only
Shell/Bash
2 votes152 views1 answer
Batch loop through folders in a directory
Shell/Bash
0 vote125 views1 answer
Install vim in alpine
Shell/Bash
0 vote135 views1 answer
OMV install script
Shell/Bash
0 vote121 views1 answer
UINSTALL EVERTYHING INNO
Shell/Bash
2 votes129 views1 answer
Gcloud
Shell/Bash
24 votes140 views6 answers
Pull remote branch git
Shell/Bash
4 votes119 views1 answer
Permissions 0644 for '/root/.ssh/id_rsa' are too open.
Shell/Bash
10 votes137 views4 answers
Git revert uncommitted changes
Shell/Bash
2 votes151 views1 answer
Start multiple bash processes and wait for all to complete
Shell/Bash