127.0.0.1 is a special address that always points to local system (localhost) and is used for the testing of various services. The network 127.0.0.0/8 is a loopback network of the local system. It enables server-client communication on a single system.
- Title Page
- Copyright and Credits
- Dedication
- About Packt
- Contributors
- Preface
- Getting Started with CentOS 7
- Command-Line and Filesystem Navigation
- Managing Text Files
- User and Group Management
- Managing File Permissions
- Process Management
- Understanding processes
- Viewing current processes
- Listing running processes
- The ps command
- Displaying processes running from the current shell
- Displaying all processes by their user
- Displaying all processes in different formats
- Sorting processes based on different parameters
- Displaying processes by user
- Displaying process information by name
- Displaying process details by PID
- Displaying a process hierarchy in a tree style
- Displaying the child processes of a parent
- Displaying the thread of a process
- Displaying the pid of a process if the process name is known
- Using the pstree command
- The ps command
- Finding the PID of a running process
- Listing running processes
- Communicating with processes using signals
- Monitoring processes and load averages
- Managing a processes' priority with nice and renice
- Controlling jobs on the command line
- Summary
- Managing Networking in CentOS
- Linux networking concepts
- Using Linux networking commands
- Managing a network with nmcli
- Editing network configuration files
- Configuring hostnames and name resolutions
- Accessing remote logins with SSH
- Transferring files in Linux
- Summary
- Software Package Management
- Managing applications using RPM
- Managing applications using YUM
- Understanding the YUM package manager
- Using the YUM command line
- Finding an application using yum
- Installing applications using YUM
- Displaying packages and their information with YUM
- Removing applications using yum
- Updating applications and the system using yum
- Managing groups of applications using YUM
- Using YUM history
- Managing application repositories using YUM
- Handling other miscellaneous options of yum
- Managing official and third-party repositories
- Creating custom repositories
- Summary
- Overview of Essential Advance Utilities
- Understanding system logging
- Understanding how to control the system and services
- Understanding SELinux concepts
- Understanding firewall concepts in CentOS 7
- Summary
- Other Books You May Enjoy
Loopback address
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