How to set a crontab to run command on the last day of every month.
Linux crontab alone cannot specify the last day of a month or its first Saturday. These scripts add that control to scheduled commands.
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How to broadcast a message to all users and direct message to some user
Administrators have several ways to send messages to users logged in to a text-mode system. This article covers broadcasting to all users and sending directly to one user.
MySQL replication: 'show master status' shows 'Empty set (0.00 sec)'
After preparing two servers for MySQL replication with identical data, the next step is setting up replication. This requires running show master status to check…
Install OpenVZ OS level virtualization on CentOS
OpenVZ is an OS-level server virtualization solution, also called container virtualization. It is popular for Virtual Private Servers (VPSs), each called a container.
Introducing Putty Manager
For PuTTY fans, I have a new tool to introduce. It is useful when you need several remote sessions and must run commands on multiple machines at once: Putty Manager. To use it, you need PuTTY…
How to install dig, host and nslookup commands on your system
If dig, host, or nslookup is missing on your Linux machine, you may have used a minimal installation on CentOS 6 or RHEL 6, or selected no packages during installation.
After Installed DirectAdmin, the admin user cannot login
If you cannot log in to the control panel after installing DirectAdmin, admin may be missing from /usr/local/directadmin/data/admin/admin.list or the admin user directory may not exist.
How to delete messages from mail queue
How to delete messages from the queues of different MTAs, using an example mail queue to show the available commands.
Format NTFS partition on external hard drive from CentOS / RHEL linux
After writing about mounting NTFS on CentOS / RHEL, I wanted to share how Linux can format a hard disk with an NTFS filesystem without using Windows.