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Linux command to change UID and GID

Let us see some examples and commands to change a user and group ID in Linux:
To assign a new UID to user called foo, enter:
# usermod -u 2005 foo

To assign a new GID to group called foo, enter:

# groupmod -g 3000 foo

Verify that you changed UID and GID for given users with the help of ls command:
# ls -l
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