CentOS 6 Auto Starting Apache httpd Start at Boot

CentOS Auto Starting Apache httpd Automatic Start with System

In the example shown in the image below, Cent OS was accessed through an SSH connection utilizing Putty.

In the image below, the same process or procedure to set Apache httpd to automatically start with the system was done using a VMware console access via vSphere Client.

Auto-start Apache httpd service at boot time 

 The process and steps are simple and straight forward.

Let's look for the status of httpd to see whether is is setup to auto-start with the system during reboot , restarts, etc.
1. Run the command chkconfig --list | grep http  .
       For the output, you will see a series of OFF settings as shown in the accompanying images.

2.  Run the command chkconfig httpd on 
        There is no output to this command.
          If completed successful, ie. no errors, the command prompt is returned on the next line.

3. Run the command from step 1 again to confirm,  chkconfig --list | grep http

      In step 1 we saw a series of OFFs, after set to on we see ONs instead
                   

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Command Line to Find Dell Service Tag HP Serial Number

Command Line to Find Dell Service Tag HP Serial Number

A standard command line window can be used to find a Dell service tag. BCM command line utilities do not have to be installed, neither does DRAC or iDRAC have to be configured or even enabled. It is accomplished using Windows Management built-in functionality. 

Desktops or Servers Service Tag or Serial Number

On an HP system, the serial number can be easily retrieved by starting a command prompt and entering or typing in : WMIC BIOS GET SERIALNUMBER  (the command can be upper or lower case). On  Dell system, PC or server,  the same command line will return the service tag of the system for the serial number. 

Command line to get the serial number or service tag of a white-box computer 

On  a "white-box" system you might get the serial number if it has been entered into the field which is queried by the command line to determine the service tag or serial number of the system.  Commonly however, when trying to acquire the serial number using Windows Management the results "To Be Filled by O.E.M." . 

Linux Command line to get the Dell service tag or HP serial number

The ability toe retrieve the service tag or serial number of a system is not limited to Windows operating systems. It is also possible on Linux based systems. On Cent OS or Red Hat Linux for example, the following command line utility can be executed to retrieve the serial number or Dell service tag.

Command To Find Out Dell Service Tag

      # dmidecode | grep -i serial      

or 

      # dmidecode -t 1

You may have to install DMIDECODE first if it is not available. 

This can be done by executing the following: 

       

# yum -y install dmidecode

Display the SID of the Logged User

Not related to serial numbers or service tags however a useful command that's been buried and not widely used since it's unknown is the whoami command . A Windows Command prompt CLI window is all that is needed. If shown this command to fellow techs , experienced techs, that often work with user profiles and windows system registries. They are shocked how quick it is to obtain the logged in user SID. With the need for even PowerShell, just a windows command prompt.
open a command prompt window on any version of windows, and enter 

 

              c:\> whoami /user   

and hit enter.

I have the output of the command to display the SID of the logged in user in this short post.

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