Ubuntu: How to install the Classic Desktop in Ubuntu 11.10 (Oneiric Ocelot)
Ubuntu 11.10 will not include the classic GNOME desktop which is available alongside Unity in Ubuntu 11.04. Ubuntu 11.10 will automatically use Unity as its default session and fall back to Unity 2D for those whose computers do not support 3D graphics. But if you truly want to go back to Ubuntu Classic Desktop without Unity, then this tutorial will show you how to do it easily. All that’s requires is installing a few extra packages and performing a tweak here and there.
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FreeBSD: How to set up an UPnP Internet Gateway Device (IGD) with MiniUPnP and FreeBSD 9.0
Universal Plug and Play (UPnP) is a set of networking protocols that permits networked devices, such as personal computers, printers, Internet gateways, Wi-Fi access points and mobile devices to seamlessly discover each other's presence on the network and establish functional network services for data sharing, communications, and entertainment.
The MiniUPnP project offers software which supports the UPnP Internet Gateway Device (IGD) specifications.
For the purposes of this article I'll assume you're familiar with setting up NAT under FreeBSD using OpenBSD Packet Filter. I'll also assume that your machine is up, routing and translating traffic correctly and is protected by OpenBSD Packet Filter (PF).
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Ubuntu: How to build and install Linksys AE1000 Wireless-N linux driver on Ubuntu 11.10
Cisco Linksys AE1000 provides high performance wireless network connectivity for any desktop or laptop computer. The range and data transfer rate achieved by its Wi-Fi Certified N technology rival that of a wired network without the inconvenience and complexity of being tethered. At home or in an office environment, the device makes network connectivity simple and flexible. At public hot spots like cafés or hotels, making an internet connection is secure and fast.
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FreeBSD: How to Install and Configure a PPTP VPN server with mpd5 on FreeBSD 8.2
The Point-to-Point Tunneling Protocol (PPTP) is a method for implementing virtual private networks. PPTP uses a control channel over TCP and a GRE tunnel operating to encapsulate PPP packets.
In this document we will see how to install and configure Mpd5 as a PPTP server, allowing remote VPN connections. This setup has been tested and works well on FreeBSD 8.2 system and Mpd version 5.5.
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UNIX Tips: How to find broken symbolic links
In computing, a symbolic link (also symlink or soft link) is a special type of file that contains a reference to another file or directory in the form of an absolute or relative path and that affects pathname resolution.
1. To display a list of the broken links, execute:
find -L ${dir} -type l
2. To remove the broken links, execute:
find -L ${dir} -type l -print0 | xargs -0 rm
Do not forget to replace ${dir} with the desired directory.
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Linux: How to shrink a Logical Volume with LVM
LVM is a logical volume manager for the Linux kernel. It manages disk drives and similar mass-storage devices, in particular large ones. The term "volume" refers to a disk drive or partition thereof. LVM was originally written in 1998 by Heinz Mauelshagen, who based its design on that of the LVM in HP-UX.
The LVM can:
- Resize volume groups online by absorbing new physical volumes (PV) or ejecting existing ones.
- Resize logical volumes (LV) online by concatenating extents onto them or truncating extents from them.
- Create read-only snapshots of logical volumes (LVM1).
- Create read-write snapshots of logical volumes (LVM2).
- Stripe whole or parts of logical volumes across multiple PVs, in a fashion similar to RAID 0.
- Mirror whole or parts of logical volumes, in a fashion similar to RAID 1.
- Move online logical volumes between PVs.
- Split or merge volume groups in situ (as long as no logical volumes span the split). This can be useful when migrating whole logical volumes to or from offline storage.
In this article I'll show you how to shrink a LVM Volume Safely.
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Linux Tips: How to force fsck on the next reboot or boot sequence
fsck is a file system consistency check and interactive repair tool.
Here is a quick tip that will show how you can tell your Linux system to perform a fsck on its partitions on the next reboot. Normally this will happen by default, after some time as configured in the filesystem at creation time (or changed later): after a number of days or a number of filesystem mounts.
If for some reason, you want to force the system to run fsck on the next reboot just use one of the following options:
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Linux: How to mount SMB/CIFS shares under Linux
This document provides help on mounting SMB/CIFS shares under Linux.
All files accessible in a Linux and UNIX systems are arranged in one big tree, the file hierarchy, rooted at /. These files can be spread out over several devices. The mount command serves to attach the file system found on some device to the big file tree.
Use the mount command to mount remote SMB/CIFS shares under Linux as follows:
mount -t cifs //192.168.1.1/mySharedFolder -o username=myUser,password=myPassword /mnt/mySharedFolder
Where,
-t cifs : File system type to be mount
-o : are options passed to mount command, in this example I had passed two options. First argument is the user name (myUser) and second argument is the password (myPassword) to connect to the remote computer.
//192.168.1.1/mySharedFolder : remote computer and share name
/mnt/mySharedFolder : local mount point directory
Make sure to create /mnt/mySharedFolder first.
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FreeBSD: How to mount SMB/CIFS shares under FreeBSD
This document provides help on mounting SMB/CIFS shares under FreeBSD Operating System.
The mount_smbfs command mounts a share from a remote server using SMB/CIFS protocol. You can easily mount MySharedFolder share using the following syntax:
mount_smbfs -I 192.168.1.1 //myUser@serverName/mySharedFolder /mnt/mySharedFolder
Where,
192.168.1.1 is the IP address of the remote computer.
myUser is your user name.
serverName is NETBIOS Server Name.
mySharedFolder is CIFS share name.
/mnt/mySharedFolder is the local mount point directory.
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UNIX Tools: pipe viewer (pv) – monitor the progress of data through a pipe
Pipe Viewer (pv) allows a user to see the progress of data through a pipeline, by giving information such as time elapsed, percentage completed (with progress bar), current throughput rate, total data transferred, and estimated time of arrival.
pv can be inserted into any normal pipeline between two processes to give a visual indication of how quickly data is passing through, how long it has taken, how near to completion it is, and an estimate of how long it will be until completion.
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- Ubuntu: How to build and install Linksys AE1000 Wireless-N linux driver on Ubuntu 11.10
- FreeBSD: How to Install and Configure a PPTP VPN server with mpd5 on FreeBSD 8.2
- UNIX Tips: How to find broken symbolic links
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