Do You Know the New Names for Linux Network Interfaces?

Do you know how to check the IP address of a Linux server? “Of course!”, you say, and you type this: $ ifconfig eth0 Not anymore! Both the command ifconfig and the interface name eth0 have been obsolete for a few years now. However, many organizations still use something like Red Hat Enterprise Linux 6, […]
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Red Hat’s NetworkManager and Firewall Daemon — Nice Ideas, But Not For My Server

I have a suggestion that may look strange at first, but bear with me: Red Hat Enterprise Linux includes two core networking services that should be disabled. Red Hat provides two operating systems, Fedora and Red Hat Enterprise Linux or RHEL. My suggestion makes more sense when we consider how RHEL is developed. Both Fedora […]
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How to Transition from init to systemd: Controlling Services

Last week I showed you how to determine your current run state and figure out what that really means. Let’s control some services to tune the state of our system! The systemctl command is the master tool for controlling and querying the systemd system and service manager. Both it and the related journalctl command truncate […]
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How to Transition from init to systemd: Getting Started

The change from classic init to systemd is a really big one. Some may even say controversial! A few old standbys still work — for now — as automatic workarounds. We can still do major state changes with reboot, halt, and poweroff; by running init with a numerical argument, and with shutdown. Also, Red Hat’s […]
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How Does Linux Boot? Part 6: Replacing init With systemd – What You Need to Know

Last week I mentioned that systemd has replaced the traditional init program in Linux. Let’s see some capabilities it adds! Systemd organizes tasks into units which can include initializing hardware, mounting file systems, and starting services that will daemonize and run in the background. The active units are those which are enabled (that is, configured […]
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