tar zxvf filename.tar.gz

z = Gunzip(uncompress) it before extracting, used on file ending in .tar.gz or .tgz
x = Extract the contents of the TAR file
v = Verbose – display contents as it is tarring or extracting
f = Filename to follow

Note: If the file does not have “.gz” extension that means its already uncompressed and one has to just extract it using “tar xvf” command.

This is a two step command to extract and untar the file.

gunzip filename.tar.gz

tar xvf filename.tar

Even when you run the Exchange Management Shell on your exchange server, you’re essentially creating a powershell remoting session. The following steps take place in the background when you click the EMS icon:

You can set up implicit remoting from any maching using powershell v2. This imports the commands from your exchange server to your local powershell session so you don’t need any Exchange tools installed.

First we create a session using the New-PSSession cmdlet:

$s = New-PSSession -ConfigurationName Microsoft.Exchange -ConnectionUri http://<CAS FQDN>/PowerShell/ -Authentication Kerberos

Then, import the session using the Import-PSSession cmdlet:

Import-PSSession $s

The Exchange Management Shell commands are now imported into the local PowerShell session.

You could use the same method to setup a scheduled task from your machine to run a commands on your exchange server.

[source: ]

If all you need the kernel version you can try
uname -a

This outputs something like this

Linux localhost.localdomain 2.4.20-31.9 #1 Tue Apr 13 18:04:23 EDT 2004 i686 i686 i386 GNU/Linux

If you need the actual distro name you can try
cat /etc/*release

In Ubuntu it shows up as

DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=9.04
DISTRIB_CODENAME=jaunty
DISTRIB_DESCRIPTION=”Ubuntu 9.04″

Or even
cat /etc/issue

which spits out the following on Ubuntu

Ubuntu 9.04 \n \l

You can combine all three to get the following
uname -a && cat /etc/*release && cat /etc/issue

Update:
Another one to add to the list
cat /proc/version

This script will update the access settings for a group of users in a particular OU. Once you run the script, a dialog box will ask you for this OU. Once this is set all users in that OU will be updated.

The AD property this script modifies is ‘msNPAllowDialin’. This property is accepts boolean values. So the three options are

To manage access via the Remote Access Policy, comment out the

objUser.Put "msNPAllowDialin", FALSE

and uncomment the

' objUser.PutEx ADS_PROPERTY_CLEAR, "msNPAllowDialin", 0

line.

All you’ll need is to install the SUNWsmmgr package.
pkg install SUNWsmmgr
All of the config files, including snmpd.conf are in /etc/sma/snmp.

The service to enable snmp is called sma.
svcadm enable svc:/application/management/sma:default

To install utilities like snmpwalk and snmpget, you can install the SUNWsmcmd package.

Install dkms and the GNU C Compiler using the following command:

sudo apt-get install dkms gcc

Install the build and header files for Ubuntu using the following command:

sudo apt-get install linux-headers-$(uname -r)

$(uname -r) in the above command just passes your kernel version to apt-get

[HKEY_LOCAL_MACHINE\Software\Microsoft\Net Framework Setup\NDP\v2.0.50727]
Install = 1 (REG_DWORD)

net localgroup "Network Configuration Operators" /add <username>