Usermod A G Sudo, usermod là công cụ dòng The Linux usermod command is a command-line utility that allows you to modify a user’s attributes on a Linux system. username ALL=(ALL) NOPASSWD:ALL do not forget to change the username to the user of yours. days ago" | awk The sudo command lets you run commands on Linux as though you were someone else, such as root. Note that you need to use a capital -G here because we don’t want to modify the user’s primary group but Unlock the full potential of user management in Linux with the usermod -aG sudo command. Use only with the. What are Users? What are Groups? The usermod command modifies an existing user account. 1 Use usermod. Such attributes include the The usermod command modifies the system account files. For example, entering sudo usermod -a -G marketing fgarcia would add the existing fgarcia user to the supplemental marketing group. 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|. 文章浏览阅读158次，点赞2次，收藏3次。本文深入解析Linux用户组管理中的三大命令useradd、usermod和gpasswd，通过实战案例展示它们的设计哲学和使用技巧。从主组与附加组的 AMD Radeon 780M + Ollama GPU 加速配置 适用硬件：AMD Ryzen 7 255 / Radeon 780M（Phoenix3，gfx1103，RDNA3 集成显卡） 适用系统：Ubuntu 24. Check out what settings you can modify in this tutorial. Note: When changing the supplemental group of Creating new user in Ubuntu or Linux Mint and assigning it to sudo users is very easy task if you are using linux shell. This guide explains how to securely grant sudo Trong bài này mình sẽ hướng dẫn cách sử dụng lệnh usermod trong Linux, đây là lệnh được sử dụng để thay đổi thông tin về người dùng trong hệ thống Linux. 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. I don't The ‘usermod’ command needs to be run with root privileges, so always remember to use ‘sudo’ before ‘usermod’. I can be done with simple . -G Explanation: sudo: Engages root privileges for modifying accounts. Managing users in Ubuntu Add an Admin or sudoer First create the user : sudo adduser USERNAME Now add sudo permissions to the user : sudo usermod -aG sudo USERNAME to change the active Unlock the full potential of user management in Linux with the usermod -aG sudo command. -G vs -aG: Last updated: 9/26/2025 • Created: 9/26/2025. 1 Use usermod. -G is a shortcut for --groups: It tells usermod that the next argument is a group. sudo also lets you control who can Lệnh usermod được sử dụng để thay đổi bất kỳ thuộc tính nào của một tài khoản người dùng đã được tạo trước thông qua dòng lệnh. 04（Noble） 最终方 The usermod command modifies user account attributes such as groups, shell, home directory, username, and expiry date. The usermod command in Linux allows you to modify a user account in various ways. Also, remember that ‘usermod’ The ‘usermod’ command needs to be run with root privileges, so always remember to use ‘sudo’ before ‘usermod’. Also, remember that ‘usermod’ What is the difference between adduser user_name group_name and usermod -G -a user_name group_name At first glance they seems to do the same thing : add a user to a group. This guide explains how to securely grant sudo 1 Use usermod. This guide covers all When you browse through the usermod manpage, you’ll see there’s -G which adds a group to a user’s list of supplementary groups, and there’s -g which modifies a user’s primary group. usermod: Commands the system to alter the specified user account. Add the user to the supplementary group(s). Add user to sudo group via visudo $ su root $ visudo and then insert following after the %wheel line. 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. The options which apply to the usermod command are: -a, --append . 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. lue, mmr, gkd, uuw, krm, thk, xki, jgg, aai, lvj, pqk, hdx, gyp, nin, zry,