delete route commandline linux terminal


waiting for network configuration error

I have found the cause of this is having any interfaces defined in /etc/network/interfaces ( besides lo ) defined as auto. To correct this problem, the recommended solution is to remove your interfaces from this file, and set them up with network manager. Leaving /etc/network/interfaces looking like the default:

Around 25 lines down in the file you will see a section:

NTP server install on linux

I installed NTP server on Ubuntu Server 10.04 using:

The NTP daemon seems working and listening on the 123 port.

However, I was not able to get the time from another machine:

Remove  previous version


If you have ntpd installed on another machine, you can use your first server in the servers list of your ntp.conf file, or can synchronize one time with the -q option, as follows:


NFS Server and Client Installation on CentOS 7

The NFS server exposes the internal directory as the /export folder, which is bind-mounted on the host. The Docker host then mounts this folder using the NFS protocol to its /mnt folder. Then a so-called infrastructure container is created which binds the mount folder.

For Ubuntu :


NFS server on CentOS 7.

Network File System (NFS) is a popular distributed filesystem protocol that enables users to mount remote directories on their server.

hostname and IP as


Now create the

Now we will share the NFS directory over the network a follows:

nano /etc/exports

We will make two sharing points  /home and /var/nfsshare. Edit the exports file as follows:

Note is the IP of client machine, if you wish that any other client should access it you need to add the it IP wise other wise you can add “*” instead of IP for all IP access.

Condition is that it must be pingable at both ends.

start the NFS service:

Again we need to add the NFS service override in CentOS 7 firewall-cmd public zone service as:

Now we are ready with the NFS server part.

Client Side


Permanent NFS mounting

Add the entries like this:

Note is the server NFS-share  IP address, it will vary in your case.

This will make the permanent mount of the NFS-share.



Grub Booting



Finally, you can call up a specific menu interface with the configfile command as in:

Next, start GRUB, either with the grub executable you built in Linux or by rebooting with the GRUB floppy. If GRUB starts in menu mode, press c to go to command-line mode. Enter the following commands at the grub prompt:


How to Install Red5 0.9 on Ubuntu

If they aren’t already installed, add the following to /etc/apt/sources.list

Then, install some required libraries

Now, download and install Red5