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Editor to share with you how to install Anacron in Linux, I believe most people do not know much about it, so share this article for your reference, I hope you can learn a lot after reading this article, let's go to know it!

The basic principle of Linux Anacron

Unlike Cron, which runs as a daemon, Linux Anacron runs and terminates as a normal process. Anacron maintains a set of jobs that should be run, each with an associated run interval. Each time you run, Linux Anacron checks the job list to see if the specified time interval for a job has elapsed since it was run once. If so, Anacron will run the job.

This design approach means that Linux Anacron must run on a regular basis. The running Anacron section describes two methods. Each method has its own advantages and disadvantages. Generally speaking, Anacron is run by the root user, but the average user may also use Linux Anacron, as described in Linux Anacron's personal application.

Get and install Linux Anacron

Most Linux distributions include Anacron in their packages. Therefore, you can install the software by typing yum install anacron, apt-get install anacron, or something like that. If your distribution does not include the Linux Anacron package, you need to download and install the package from the source code. Unfortunately, the Anacron Web site does not contain a tarball link; you need to use Concurrent Versions System (CVS) to get the download:

Listing 1. Download Anacron from CVS

Cvs-d:pserver:anonymous@anacron.cvs.sourceforge.net:/cvsroot/anacron login

Cvs-Z3-d:pserver:anonymous@anacron.cvs.sourceforge.net:/cvsroot/anacron co-P anacron

After you enter a * * command, you will log in to the CVS library as a guest user. This will prompt you for a password. Just press the Enter key (no password is required for guest access). The second command downloads the Anacron source code to a subdirectory called anacron.

One of the disadvantages of using CVS to get Linux Anacron is that sometimes this method is unreliable. If the software is not fully compiled, you can try to solve the problem yourself, otherwise you will have to wait a day or two until someone else helps you fix the problem. If the problem persists, then * track the precompiled binaries, even if that means looking for files from another distribution.

A common bug in Anacron is gregor.c:79: error: assignment of read-only variable 'isleap'. The way to fix this bug is to edit line 79 of the gregor.c file and delete the string const at the beginning of the line.

Once you have the Linux Anacron source code, you can install it by following these steps (note that you don't need to perform these steps if you already have precompiled binaries installed for the distribution):

Change to the Linux Anacron directory created by cvs.

As an optional step, edit Makefile to adjust the software installation directory or other compilation details.

Enter make to build the software.

As root, enter make install to install the software.

After installing the software, you should continue to configure and run Anacron, whether you use the package management of the distribution or install it from the source code.

The above is all the contents of the article "how to install Anacron in Linux". Thank you for reading! I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!

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