How to Install crontab on CentOS 6.2

Question :
When i try to edit and create the crontab on my CentOS 6.2 server, i get the following message:

[root@centos62 ~]# crontab -e
bash: crontab: command not found

Answer :
On linux CentOS 6.2 minimum installation, crontab package does not installed or included. Crontab is the program used to install, remove or list the tables used to drive the cron daemon. cron is a daemon to execute scheduled commands. Cron should be started from /etc/rc.d/init.d or /etc/init.d.

In order to use crontab, you have to install using the following command :

[root@centos62 ~]# yum install vixie-cron -y

Example :

[root@centos62 ~]# yum install vixie-cron -y
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
 * base: mirror.averse.net
 * epel: ftp.jaist.ac.jp
 * extras: mirror.averse.net
 * updates: mirror.issp.co.th
Setting up Install Process
Resolving Dependencies
--> Running transaction check
---> Package cronie.i686 0:1.4.4-7.el6 will be installed
--> Processing Dependency: dailyjobs for package: cronie-1.4.4-7.el6.i686
--> Processing Dependency: /usr/sbin/sendmail for package: cronie-1.4.4-7.el6.i686
--> Running transaction check
---> Package cronie-anacron.i686 0:1.4.4-7.el6 will be installed
--> Processing Dependency: crontabs for package: cronie-anacron-1.4.4-7.el6.i686
---> Package exim.i686 0:4.72-2.el6 will be installed
--> Running transaction check
---> Package crontabs.noarch 0:1.10-33.el6 will be installed
--> Finished Dependency Resolution

Dependencies Resolved

====================================================================================================
 Package                 Arch            Version                Repository                     Size
====================================================================================================
Installing:
 cronie                  i686            1.4.4-7.el6            CentOS6.2-Repository           70 k
Installing for dependencies:
 cronie-anacron          i686            1.4.4-7.el6            CentOS6.2-Repository           29 k
 crontabs                noarch          1.10-33.el6            CentOS6.2-Repository           10 k
 exim                    i686            4.72-2.el6             epel                          1.2 M

Transaction Summary
====================================================================================================
Install       4 Package(s)

Total download size: 1.3 M
Installed size: 3.9 M
Downloading Packages:
(1/4): exim-4.72-2.el6.i686.rpm                                              | 1.2 MB     00:11
----------------------------------------------------------------------------------------------------
Total                                                               111 kB/s | 1.3 MB     00:12
Running rpm_check_debug
Running Transaction Test
Transaction Test Succeeded
Running Transaction
  Installing : exim-4.72-2.el6.i686                                                             1/4
  Installing : cronie-1.4.4-7.el6.i686                                                          2/4
  Installing : crontabs-1.10-33.el6.noarch                                                      3/4
  Installing : cronie-anacron-1.4.4-7.el6.i686                                                  4/4

Installed:
  cronie.i686 0:1.4.4-7.el6

Dependency Installed:
  cronie-anacron.i686 0:1.4.4-7.el6     crontabs.noarch 0:1.10-33.el6     exim.i686 0:4.72-2.el6

Complete!

Sample usage of crontabe :

[root@centos62 ~]# crontab -e
# Used to update Cacti
*/5 * * * * /usr/share/cacti/poller.php >> /var/log/cacti 2>&1

How to Reset the Directory Manager Password on RHEL 7 / CentOS 7
How to Reset the Directory Manager Password on RHEL 7 / CentOS 7

It is best practice to remember passwords, but because too many passwords, sometimes we forget. We are not encouraged to write the password on any paper or share the password...

How to Find Big Files Size on Linux RHEL/CentOS
How to Find Big Files Size on Linux RHEL/CentOS

As the linux administrator, sometimes we have to identify which files are most take much space in the linux server resulting in low free space. Low disk space can also...

Why Linux users should worry about malware and what they can do about it
Why Linux users should worry about malware and what they can do about it

Don’t drop your guard just because you’re running Linux. Preventing the spread of malware and/or dealing with the consequences of infection are a fact of life when using computers. If...

How to Reset Forgotten Root Password on Linux RHEL 7/CentOS 7
How to Reset Forgotten Root Password on Linux RHEL 7/CentOS 7

This article will explain the steps to reset a lost root password or to reset forgotten root password on Linux RHEL 7 or CentOS 7. Basically, the steps will adding...

How to Update CentOS or Upgrade CentOS to the Latest Version
How to Update CentOS or Upgrade CentOS to the Latest Version

Recently, the latest version of CentOS 7.3 was released. All users of CentOS 7.0, 7.1 and 7.2 can upgrade their system to the most recent. This quick guide will explain...

How to Change your WordPress Username, Nickname and Display Name in MySQL
How to Change your WordPress Username, Nickname and Display Name in MySQL

After you create an account log in WordPress, you may want to change your WordPress username, as appropriate or due to security reason. However, you can not do this from...

How to Enable SSH Root Login on Ubuntu 16.04
How to Enable SSH Root Login on Ubuntu 16.04

As what we wrote in the previous article on how to allow SSH root on Ubuntu 14.04, after installing a fresh new copy of Ubuntu 16.04 LTS, we find that...

How to Change UUID of Linux Partition on CentOS 7
How to Change UUID of Linux Partition on CentOS 7

UUID (Universally Unique IDentifier) should be unique and it is used to identify storage devices on a linux system. If you cloned a virtual machine from vCenter, the metadata containing...

1 Comment

Leave a Reply

Your email address will not be published. Required fields are marked *