The chmod calculator is the script to have handy when setting permissions

Chmod
Permission	Owner	Group	Other
Read
Write
Execute

This free script provided by
History Linux Kit

Mysql Time.

The Tutorial help you to make an example from Time Now in Mysql. In this Tutorial we use now ( ) keywords in Mysql which returns you the current time.

Query systen time.

Open console.

Login in mysql.

run query: select time(now())as Timenow;

mysql> select time(now())as Timenow;
+----------+
| Timenow  |
+----------+
| 09:40:20 |
+----------+
1 row in set (0.00 sec)

 

How I can change the time zone of a node on Redhat

How I can change the time zone of a node on Redhat.

Open consola.

The file containing the configuration is located in /etc/localtime. Make a copy of the file and copy the configuration file time zone that is yours. The configuration files are located in /usr/share/zoneinfo

In my case my time zone is Madrid Spain.

[root@vic ~]# ls -la /usr/share/zoneinfo/Europe/Madrid
-rw-r--r-- 1 root root 2593 jun 26 03:43 /usr/share/zoneinfo/Europe/Madrid

Make a copy.

[root@vic ~]# cp /etc/localtime /etc/localtime_bk

Configure new zone.

[root@vic ~]# cp /usr/share/zoneinfo/Europe/Madrid /etc/localtime

cp: overwrite /etc/localtime'? (y/n) Y

Problem solved.