PS Quick Tips: Create a directory in PowerShell

PS D:\> New-Item -ItemType directory -Path D:\tmp

PS Quick Tips: How to check if path exists in Powershell

PS D:\> Test-Path C:\Windows

PS Quick Tips: Loading Powershell add-on module

1. Copy PowerShell module to $env:HOMEDRIVE + $env:HOMEPATH + "\Documents\WindowsPowerShell\Modules", create the folder if necessary.
2. Load the module, e.g., 

PS D:\> Import-Module Pscx

Where Pscx is the module name.

PS Quick Tips: Check Powershell version installed

PS: D:> $host.version

Get IP address of the machine in Arch Linux

How to get IP address in Arch Linux? Well, it turns out to be easy:

#: ip addr

You should see something like:

1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue state UNKNOWN
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
    inet6 ::1/128 scope host
       valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
    link/ether 00:1f:c6:d5:32:4d brd ff:ff:ff:ff:ff:ff
    inet 192.168.0.105/24 brd 192.168.0.255 scope global eth0
    inet6 fe80::21f:c6ff:fed5:324d/64 scope link
       valid_lft forever preferred_lft forever
3: wlan0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN qlen 1000
    link/ether 00:15:af:92:3e:8a brd ff:ff:ff:ff:ff:ff

!Enjoy ts

Cisco VPN client failed to connect on Windows 8

I tried to connect to a remote location using Cisco AnyConnect VPN Client (v 2.2.0140) using Windows 8 Release Preview but failed with error message "The VPN client driver has encountered an error."

Does this indicates that the client application is not compatible with Windows 8, at least for now? There is a workaround though. Following are the steps to make it to work.

1. Open Registry Editor (like type regedit.exe).
2. Navigate to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\vpnva
3. Locate key DisplayName, like mine shows @oem3.inf,%vpnva_Desc%;Cisco AnyConnect VPN Virtual Miniport Adapter for Windows
4. Change it to Cisco AnyConnect VPN Virtual Miniport Adapter for Windows
5. Close then open Cisco AnyConnect VPN Client. Retry to connect. It should work from here on.

~ts

ERROR: database disk image is malformed in Fedora 17

Got a spanking brand new Fedora 17 install, it looks a lot different from Fedora 16 on the surface which is a welcome change, quite refreshing actually. Tried to do a software update but instead got the following error message:

ERROR: database disk image is malformed

 Seems like my rpm database got corrupted for some reason but this is a new install on VirtualBox. Anyway, got it fixed by doing the following:

$ sudo yum clean dbcache 

~ts