Linux – What defines a user account?
Explains Linux user account concept and related files with an example.Read answer to: "Linux – What defines a user account?"
View ArticleUnderstanding /etc/passwd File Format
Q. Can you explain /etc/passwd file format for Linux and UNIX operating systems?Read answer to: "Understanding /etc/passwd File Format"
View ArticleUnderstanding /etc/shadow file
Q. Can you explain /etc/shadow file used under Linux or UNIX? A. /etc/shadow file stores actual password in encrypted format for user's account with additional properties related to user password i.e....
View ArticleUnderstanding /etc/group File
Can you explain me the format of /etc/group user group file under Linux / UNIX operating systems?Read answer to: "Understanding /etc/group File"
View ArticleHow To: UNIX Add A User To A Group
How do I add a user to a group under Sun Solaris UNIX operating system from a shell prompt or command line?Read answer to: "How To: UNIX Add A User To A Group"
View ArticleUNIX / Linux Command To Check Existing Groups and Users
How do I check the existing Linux / UNIX users and groups under Linux / UNIX operating system?Read answer to: "UNIX / Linux Command To Check Existing Groups and Users"
View ArticleGrep Count Lines If a String / Word Matches
How do I count lines if given word or string matches for each input file under Linux or UNIX operating systems?Read answer to: "Grep Count Lines If a String / Word Matches"
View ArticleLinux / UNIX: Change Bash To KSH Shell
How do I change my current login shell from bash to ksh under Linux or UNIX or Apple OS X operating systems?Read answer to: "Linux / UNIX: Change Bash To KSH Shell"
View ArticleUbuntu: Rename an Account [ User ID ]
How do I rename a user name from 'tom' to 'jerry' under Ubuntu Linux?Read answer to: "Ubuntu: Rename an Account [ User ID ]"
View ArticleLinux Change Password
How do I change my own password as well as the passwords of other users as required under Linux operating system without using GUI systems?Read answer to: "Linux Change Password"
View ArticleLinux Command: List All Users In The System
I'm a new Linux sys admin and I'm unable to find the command to list all users on my RHEL server. What is the command to list users under Linux operating systems?Read answer to: "Linux Command: List...
View ArticleLinux / Unix: users Command Examples
I am a new Linux and Unix system user. How do I list current users on Linux or Unix-like operating system using shell prompt?Read answer to: "Linux / Unix: users Command Examples"
View ArticleHow to force users to use secure passwords on Ubuntu/Debian Linux
My Linux shell user can modify their password using the passwd command. How can I force users to choose the secure password that will prevent users from using stupid passwords like "abc123",...
View Articleuserdel: user vivek is currently used by process 749 error and fix on Linux
I am trying to delete a user named vivek using the userdel command as followsuserdel -r vivek userdel: user vivek is currently used by process 749 How do I fix this problem and delete username vivek on...
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