Connection test between MS-SQL Server and client

Symptom:
You cannot connect/see any of the workstations from the Database Engine and or Replication server; or you cannot connect or see the Database Engine/Replicator from a workstation.

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The Linux File System hierarchy

“On a UNIX system, everything is a file; if something is not a file, it is a process.”

The top directory is the root directory ‘ / . Underneath the root directory all the other subdirectories. Even though the Filesystem Hierarchy Standard dectates the structure for this tree, each distribution has slight variations. These deviations however are marginal

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Run Levels and Start up Scripts

Linux by default has 6 run levels. By default most major Linux distributions boot on Run Level 5. Each runlevel has its own purpose and it runs its own services.

The information on how runlevels are configured can be found in ‘inittab in the /etc directory.

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Linux Boot process

An overview of the Linux boot process.

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The proc Directory. The most important directory

Is a Pseudo directory that resides in RAM. It provides information of all running processes and information of your system at its current state.
Each process that is launched has its own PID (Process ID) number and that number is created in the form of a file in the ‘/procdirectory. These files however are part of the Virtual Filesystem and not part of your Hard Drive.

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Superblock-inode tables-inodes

The superblock contains information regarding the filesystem type, the size and status of a partition, metadata information, number of inodes and data blocks, how much data a datablock holds in kilobytes.

An inode table consists of a number of inodes which in turn contains information for a file or a directory in a filesystem. Each inode has a unique number that corresponds to each file/directory the inode is associated with. Continue reading

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Enable RDP on a remote machine using Remote Registry

From: http://technet.microsoft.com/en-us/library/cc782195(WS.10).aspx

Applies To: Windows Server 2003, Windows Server 2003 R2, Windows Server 2003 with SP1, Windows Server 2003 with SP2

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How to Reboot a remote Windows machine

The shutdown command can be used to shutdown or reboot remote machines. Here is how.

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Find all users of your current Windows Domain

The following command will show all user accounts under the Domain you are currently on. It is useful in figuring out if a specific account we need is part of the Domain or not.

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Find uptime of a Windows local or remote system

Ways to find the uptime and downtime of a system (remote or not) by using the command prompt.

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