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:
 * epel:
 * extras:
 * updates:
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
 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

  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


Sample usage of crontabe :

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