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Linux Feed

Linux Support, Oracle Linux, Red Hat Enterprise Linux, SUSE, Oracle Unbreakable Enterprise Kernel and the Oracle Unbreakable Linux Support Program (ULN) resources, news, and support articles.

Google Transparency Report :- Saferemail

If you’re sending confidential information by mail, you wouldn’t put it in a postcard. Find out how secure your email is in a new section of our Transparency Report:http://www.google.com/transparencyreport/saferemail/

CentOS – Hostname Change

 
To change host name in CentOS use following steps:
Open /etc/sysconfig/network file
$ vim /etc/sysconfig/network
Now modifiy HOSTNAME= value
HOSTNAME=my.domain.com
my.domain.com is desired host for my machine, similarly we can use other valid domain names.
Next edit /etc/hosts file, here we need to change the host that is associated to your main IPaddress for your server.

CentOS – Hostname Change

 
To change host name in CentOS use following steps:
Open /etc/sysconfig/network file
$ vim /etc/sysconfig/network
Now modifiy HOSTNAME= value
HOSTNAME=my.domain.com
my.domain.com is desired host for my machine, similarly we can use other valid domain names.
Next edit /etc/hosts file, here we need to change the host that is associated to your main IPaddress for your server.

Create slide show from pictures - part 1

After you upload your pictures from your digital camera to your Linux computer, you want to view them without having to manually open each one. This post explains how to create a slide show from a set of picture files using ffmpeg, a command-line tool. My next post turns to Imagination, a GUI-based tool, to achieve the same goal.

Installing and Compiling Mankai Common Lisp on CentOS 5

ManKai Common Lisp (MKCL) aims to be a full implementation of the Common Lisp language in compliance with the ANSI X3J13 Common Lisp standard.
MKCL supports the operating systems Linux and Microsoft Windows, running on top of Intel x86 or AMD64 compatible processors.
For more information on installation of MKCL, do look at http://common-lisp.net/project/mkcl/

Installing and Compiling Mankai Common Lisp on CentOS 5

ManKai Common Lisp (MKCL) aims to be a full implementation of the Common Lisp language in compliance with the ANSI X3J13 Common Lisp standard.
MKCL supports the operating systems Linux and Microsoft Windows, running on top of Intel x86 or AMD64 compatible processors.
For more information on installation of MKCL, do look at http://common-lisp.net/project/mkcl/

How to automate video screen grabs using ffmpeg

Part 1 of this 2-part series explains how to use VLC, a GUI-based video player, to capture single still frames from a video file. If you are taking many snapshots, you may find the manual VLC method too laborious. This post shows how to automate the capture process using ffmpeg, a command-line tool. Extract frame at a given instant The first scenario is to simply take a single snapshot at a given time instant.

keepalived mail notification

 
To get mail alerts from keepalived(on every start change from MASTER to BACKUP or BACKUP to Master) we need to add following code in keepalived.conf file:
global_defs {
  notification_email {
    user@hostname.com
  }
  notification_email_from lb-alert@hostname.com
  smtp_server your.smtpserver..com
  smtp_connect_timeout 30
}

Next add following line in keepalived.conf’s vrrp_instance VI_1 block:
smtp_alert
After adding smtp_alert in vrrp_instance VI_1 block your code looks like below:

keepalived mail notification

 
To get mail alerts from keepalived(on every start change from MASTER to BACKUP or BACKUP to Master) we need to add following code in keepalived.conf file:
global_defs {
  notification_email {
    user@hostname.com
  }
  notification_email_from lb-alert@hostname.com
  smtp_server your.smtpserver..com
  smtp_connect_timeout 30
}

Next add following line in keepalived.conf’s vrrp_instance VI_1 block:
smtp_alert
After adding smtp_alert in vrrp_instance VI_1 block your code looks like below:

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