Newly Released RedHat EX300 Exam PDF

• usermod -G sysusers jeff
• usermod -G sysuser marion
• Verify by reading /etc/group file

Note:

Using usermod command we can make user belongs to different group. There are two types of group one primary and another is secondary. Primary group can be only one but user can belong to more than one group as secondary.

usermod -g groupname username - To change the primary group of the user. usermod -G groupname username - To make user belongs to secondary group.

1. groupadd sysusers groupadd command is used to create the group and all group information is stored in /etc/group file.

When user creates the file/directory, user owner will be user itself and group owner will be the primary group of the user.

There is one Special Permission SGID, when you set the SGID bit on directory. When users create the file/directory automatically owner group will be same as a parent.

1. chmod g+s /data

2. Verify using: ls -ld /data

You will get: drwxrws---

• rpm -ivh ftp://server1.example.com/pub/zsh-*
• Package will install

rpm command is used to install, update and remove the package, -i means install, -v means verbose and -h means display the hash mark.