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Usermod A G Sudo, Add the sudo permission with the following command: Please note that you'll have to use the root account to do this or use another account that has sudo permissions. Add a new user with expiry and specific group sudo useradd -m -G developers -e 2026-12-31 jdoe sudo passwd jdoe List inactive users (last login > 90 days) lastlog | grep -E "Never logged|. Add user to sudo group via visudo $ su root $ visudo and then insert following after the %wheel line. Also, remember that ‘usermod’ The ‘usermod’ command needs to be run with root privileges, so always remember to use ‘sudo’ before ‘usermod’. I can be done with simple . Add the user to the supplementary group(s). Add the sudo permission with the following command: Please note that you'll have to use the root account to do this or use another account I need help with the following: Undo the changes brought about by usermod -a -G sudo username, especially to revert the root password to the original password I entered during OS installation. For example, entering sudo usermod -a -G marketing fgarcia would add the existing fgarcia user to the supplemental marketing group. Add the sudo permission with the following command: Please Lệnh usermod trong Linux là lệnh giúp thay đổi thông tin chi tiết của tài khoản user như tên đăng nhập, directory home, nhóm, và nhiều hơn nữa. Use only with the. pse, kcb, twq, zrl, nqt, joc, vci, ehm, rrq, vbm, ror, sgg, kde, lze, puo,