Monday, September 10, 2012

Citrix - Important Basic Citrix Commands.

Change user
Changes the setting for .ini file mapping.
change user {/execute | /install | /query}
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/execute : Enables .ini file mapping to the home directory. This is the default setting.
/install : Disables .ini file mapping to the home directory. All .ini files are read and written to the system directory. You must disable .ini file mapping when installing applications on a terminal server.
/query : Displays the current setting for .ini file mapping.
/? : Displays help at the command prompt.
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Use change user /install before installing an application to create .ini files for the application in the system directory. These files are used as master copies for user-specific .ini files. After installing the application, use change user /execute to revert to standard .ini file mapping.
The first time you run the application, it searches the home directory for its .ini files. If the .ini files are not found in the home directory, but are found in the system directory, Terminal Services copies the .ini files to the home directory, ensuring that each user has a unique copy of the application .ini files. Any new .ini files are created in the home directory.
Each user should have a unique copy of the .ini files for an application. This prevents instances where different users might have incompatible application configurations (for example, different default directories or screen resolutions).
When the system is in install mode (change user /install), several things occur. All registry entries that are created are shadowed under HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\TerminalServer\Install. Keys added to HKEY_CURRENT_USER are copied under the \SOFTWARE key, and keys added to HKEY_LOCAL_MACHINE are copied under \MACHINE. If the application queries the Windows directory using system calls, such as GetWindowsDirectory, the Terminal server returns the systemroot directory. If any .ini file entries are added using system calls, such as WritePrivateProfileString, they are added to the .ini files under the systemroot directory.
When the system returns to execution mode (change user /execute), and the application tries to read a registry entry under HKEY_CURRENT_USER that does not exist, Terminal Services checks to see whether a copy of the key exists under the \TerminalServer\Install key. If it does, the keys are copied to the appropriate location under HKEY_CURRENT_USER. If the application tries to read from an .ini file that does not exist, Terminal Services searches for that .ini file under the system root. If the .ini file is in the system root, it is copied to the \Windows subdirectory of the user's home directory. If the application queries the Windows directory, the Terminal server returns the \Windows subdirectory of the user's home directory.
When you log on, Terminal Services checks whether its system .ini files are newer than the .ini files on your computer. If the system version is newer, your .ini file is either replaced or merged with the newer version. This depends on whether or not the INISYNC bit, 0x40, is set for this .ini file. Your previous version of the .ini file is renamed as Inifile.ctx. If the system registry values under the \TerminalServer\Install key are newer than your version under HKEY_CURRENT_USER, then your version of the keys is deleted and replaced with the new keys from under \TerminalServer\Install.

Remove Server entries in Citrix 4.5 once the server is uninstalled and still showing in Farm configuration.
dscheck /full servers /deletecomsrv ServerName
dscheck /full servers /deletemf ServerPath ServerName

Important Basic Citrix Commands.
acrcfg                                      Configure auto-reconnect settings.
altaddr                                      Specify server alternate IP address.
app                                           Run application execution shell.
Auditlog                                    Generate server logon/logoff reports.
change client                            Change client device mapping.
chfarm                                      Change the server farm membership of the server, create an additional farm, and configure a replacement data store.
ctxkeytool                                 Generate farm key for IMA encryption.
ctxxmlss                                  Change the Citrix XML Service port number.
dscheck                                   Validate the integrity of the server farm data store.
dsmaint                                    Maintain the server farm’s data store.
enablelb                                    Enable load balancing for servers that fail health monitoring tests.
icaport                                      Configure TCP/IP port number used by the ICA protocol on the server.
imaport                                     Change IMA ports.
migratetosqlexpress                 Migrate the server farm’s data store from a Microsoft Access database to a SQL Server Express database.
query                                       View information about server farms, processes, ICA sessions, & users.
twconfig                                   Configure ICA display settings.

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