How To Install cronie on CentOS 8

cronie is Cron daemon for executing programs at set times

Introduction

In this tutorial we learn how to install cronie on CentOS 8.

What is cronie

Cronie contains the standard UNIX daemon crond that runs specified programs at scheduled times and related tools. It is a fork of the original vixie-cron and has security and configuration enhancements like the ability to use pam and SELinux.

We can use yum or dnf to install cronie on CentOS 8. In this tutorial we discuss both methods but you only need to choose one of method to install cronie.

Install cronie on CentOS 8 Using dnf

Update yum database with dnf using the following command.

sudo dnf makecache --refresh

The output should look something like this:

CentOS Linux 8 - AppStream                                       43 kB/s | 4.3 kB     00:00    
CentOS Linux 8 - BaseOS                                          65 kB/s | 3.9 kB     00:00    
CentOS Linux 8 - ContinuousRelease                               43 kB/s | 3.0 kB     00:00    
CentOS Linux 8 - Extras                                          23 kB/s | 1.5 kB     00:00    
CentOS Linux 8 - FastTrack                                       40 kB/s | 3.0 kB     00:00    
CentOS Linux 8 - HighAvailability                                36 kB/s | 3.9 kB     00:00    
CentOS Linux 8 - Plus                                            24 kB/s | 1.5 kB     00:00    
CentOS Linux 8 - PowerTools                                      50 kB/s | 4.3 kB     00:00    
Extra Packages for Enterprise Linux Modular 8 - x86_64           13 kB/s | 9.2 kB     00:00    
Extra Packages for Enterprise Linux 8 - x86_64                   24 kB/s | 8.5 kB     00:00    
Metadata cache created.

After updating yum database, We can install cronie using dnf by running the following command:

sudo dnf -y install cronie

Install cronie on CentOS 8 Using yum

Update yum database with yum using the following command.

sudo yum makecache --refresh

The output should look something like this:

CentOS Linux 8 - AppStream                                       43 kB/s | 4.3 kB     00:00    
CentOS Linux 8 - BaseOS                                          65 kB/s | 3.9 kB     00:00    
CentOS Linux 8 - ContinuousRelease                               43 kB/s | 3.0 kB     00:00    
CentOS Linux 8 - Extras                                          23 kB/s | 1.5 kB     00:00    
CentOS Linux 8 - FastTrack                                       40 kB/s | 3.0 kB     00:00    
CentOS Linux 8 - HighAvailability                                36 kB/s | 3.9 kB     00:00    
CentOS Linux 8 - Plus                                            24 kB/s | 1.5 kB     00:00    
CentOS Linux 8 - PowerTools                                      50 kB/s | 4.3 kB     00:00    
Extra Packages for Enterprise Linux Modular 8 - x86_64           13 kB/s | 9.2 kB     00:00    
Extra Packages for Enterprise Linux 8 - x86_64                   24 kB/s | 8.5 kB     00:00    
Metadata cache created.

After updating yum database, We can install cronie using yum by running the following command:

sudo yum -y install cronie

How To Uninstall cronie on CentOS 8

To uninstall only the cronie package we can use the following command:

sudo dnf remove cronie

cronie Package Contents on CentOS 8

/etc/cron.d
/etc/cron.d/0hourly
/etc/cron.deny
/etc/pam.d/crond
/etc/sysconfig/crond
/lib/systemd/system/crond.service
/usr/bin/cronnext
/usr/bin/crontab
/usr/lib/.build-id
/usr/lib/.build-id/20
/usr/lib/.build-id/20/75713ea7f508632d8eb2af3c51ec59acc4aa52
/usr/lib/.build-id/32
/usr/lib/.build-id/32/811aea404298dee14ad8fd0b7b34cc9c001dab
/usr/lib/.build-id/f8
/usr/lib/.build-id/f8/e879a884df9d2370d9d1c14f2d2ccfa24fcf79
/usr/sbin/crond
/usr/share/doc/cronie
/usr/share/doc/cronie/AUTHORS
/usr/share/doc/cronie/ChangeLog
/usr/share/doc/cronie/README
/usr/share/licenses/cronie
/usr/share/licenses/cronie/COPYING
/usr/share/man/man1/cronnext.1.gz
/usr/share/man/man1/crontab.1.gz
/usr/share/man/man5/crontab.5.gz
/usr/share/man/man8/cron.8.gz
/usr/share/man/man8/crond.8.gz
/var/spool/cron

References

Summary

In this tutorial we learn how to install cronie on CentOS 8 using yum and dnf.