The XPA messaging system provides seamless communication between many kinds of Unix programs, including X programs and Tcl/Tk programs. It also provides an easy way for users to communicate with these XPA-enabled programs by executing XPA client commands in the shell or by utilizing such commands in scripts. ... A program becomes an XPA-enabled server by defining named points of public access through which data and commands can be exchanged with other client programs (and users). ...

... The Network Time Protocol (NTP) is used to synchronize the time of a computer client or server to another server or reference time source, such as a radio or satellite receiver or modem. ... Information on the NTP architecture, protocol and algorithms can be found in the Further Information and Bibliography page. The Building and Installing the Distribution page presents an overview of the procedures for compiling the distribution and installing it on a typical client or server. ...

... Exercises . C/C++ Program Compilation . ... UNIX Library Functions . ... Further Data Types . ... Not assigning a pointer to memory address before using it . ... Low Level Operators and Bit Fields . ... Some further example shared memory programs . ... Threads: Basic Theory and Libraries . ... Single threading . Some Example applications of threads . Thread Levels . ... Global and Private Thread-Specific Data Example . ... Example Use of Thread Specific Data:Rethinking Global Variables . ...

... This section explains how to get from the terminal or workstation on your desk to the VMS hosts. Most terminals are connected to the Xyplex terminal server; PC users connecting over modems will also connect through the Xyplex. ... When you turn on the terminal, you will typically get the Xyplex prompt. There are three possible prompts that can initially appear: The standard Xyplex> or Xt_command: prompt, or the Enter username> prompt. ... Press a few times to get the Xyplex username prompt. ...

Modules | Directives | ... Apache HTTP Server Version 2.4 . Apache > HTTP Server > Documentation > Version 2.4 > Programs . ... httpd is the Apache HyperText Transfer Protocol (HTTP) server program. ... Starting Apache httpd . Stopping Apache httpd . ... Process the configuration directive before reading config files. -c directive . ... Questions on how to manage the Apache HTTP Server should be directed at either our IRC channel, #httpd, on Freenode, or sent to our mailing lists . ...

... Directives | ... Apache HTTP Server Version 2.2 . Apache > HTTP Server > Documentation > Version 2.2 > Programs . ... httpd is the Apache HyperText Transfer Protocol (HTTP) server program. ... Starting Apache . ... Configuration Files . ... httpd [ - d serverroot ] [ - f config ] [ - C directive ] [ - c directive ] [ - D parameter ] [ - e level ] [ - E file ] [ -k start|restart|graceful|stop|graceful-stop ] [ - R directory ] [ - h ] [ - l ] [ - L ] [ - S ] [ - t ] [ - v ] [ - V ] [ - X ] [ - M ] . ...

If your local machine is a Macintosh, to connect usefully to the PWF Linux server you will need both an X server program for Macintosh, and a secure shell client. If your machine is running Mac OS X, then the SSH client will already be available, but you may have to install an X server program, such as XDarwin . ... Set the hostname to linux.phy.pwf.cam.ac.uk , and the Protocol to SSH . You should now be able to connect to the PWF Linux server, quoting your password to gain access. ...

... ATNF Home . ... About ATNF overview . ... Australia Telescope Steering Committee . ... Next: Third: Create a session Up: Starting up correlator control Previous: First: Log on to б  Contents . Both the correlator interface and the correlator spectra display program are run from lbaccc . ... lbaccc . ... A more complete explanation of SPD, including available commands, is found in Appendix C. Next: Third: Create a session Up: Starting up correlator control Previous: First: Log on to б  Contents . ...

Shell scripts can act like standard UNIX commands and take arguments from the command line. Arguments are passed from the command line into a shell program using the positional parameters $1 through to $9 . Each parameter corresponds to the position of the argument on the command line. ... For example: cat printps # This script converts ASCII files to PostScript # and sends them to the PostScript printer ps1 # It uses a local utility "a2ps" a2ps $* | lpr -Pps1 printps elm.txt vi.ref msg . ...

Astronomical Data Analysis Software and Systems X ASP Conference Series, Vol. ... -Band (14.0-14.5 GHz) access: Western US, Japan, Eastern China, Eastern Australia University of Maryland NASA/Goddard Space Flight Center * telescope control center * AFS data archive client * videoconferencing link STARTAP BCNet / AT T Canada NASA Research Education Network Asia-Pacific Advanced Network (APAN; terrestrial) NREN NASA/Ames Research Center * AFS ...

Astronomy Picture of the Day . How Much is That Comet in the Window? ... Explanation: The above true-color photo taken March 25th shows Comet Hyakutake passing below the stars of the Big Dipper . Many astronomy enthusiasts delight in helping people in their local community see the comet. ... One was with a little girl. ... I asked. ... But one time a real business-person showed up and, possibly feeling particularly affluent, asked "How much is the comet?" ... Comet Holmes Over Hungary . ...

Using XPA remotely ================== XPA starts by default using network communication with access control. ... Copy and append id_dsa.pub to $HOME/.ssh/authorized_keys on the system you are connecting to. ... If you are connecting from an observer's computer to a telescope computer that is not on a local area network, you may also need to change the firewall settings to enable SSH. ... The ssh command forward the port 5901 on your local computer to the same port on the telescope computer. ...

Ground Support of RadioAstron . Control and Tracking Stations . RadioAstron satellite control (command transmission, telemetry, orbit measurements) will be conducted from Evpatoria and Bear Lake control stations. ... Coarse orbit measurements will be carried out from control stations. Each measurement takes ten minutes. ... Orbit measurements at tracking stations give only radial component of spacecraft velocity but the measurements are going continuously during observing sessions. ...

... Government Open Systems Interconnection Profile Users' Guide, Version 2 . ... Computer Systems Laboratory . ... USA Government Printing Office, Washington, 1991 . ... 1.2 Nature and Purpose of Guide 1 . 1.3 Brief History of OSI 2 . 1.4 Role of GOSIP 5 . ... 5.3 Configuring a GOSIP System 29 . ... 6.5.5 Network Technology Options 43 . ... 7.7.2 Secure Data Network System (SDNS) 70 . ... 9.5 Interoperability with Non-GOSIP OSI Systems 94 . ... APPENDIX D: USERS' GUIDE EVALUATION FORM 155 . ...

... If using Windows 8, you will need to use the Desktop rather than the Metro interface. This described how to set up a VNC connection using standard Windows Desktop programs. ... While the instructions use TightVNC, the method here is to use Putty to forward the VNC session to the local machine so any VNC viewer for Windows should work. ... In this window set: . ... If you wanted to forward display 48 on dataview (from the example above) to display 1 on your local machine, you would set: . ...

I. Installation . ... AMPLE package distributive (created with program InstallShield for Microsoft Visual C++) has been downloaded on FTP server of IAA RAS as archive Ample.zip. ... Note: If the window "file download" appears, select Open... switch button, then press OK button. ... The shortcut for AMPLE will be linked with this folder, and auxiliary files will be created here during AMPLE work. ... When running AMPLE all auxiliary and new configuration files are created in the WORK folder. ...

... Satellite data ] . SMIS ] . The program calculates the satellite orbit using ephemeris data in either predict-telegrams (APT predict, TBUS data) or 2-line NORAD format (TLE data). It determines the start and finish times of acquisition session and stores the data for antenna control during the receipt onto the hard disk. The program creates session schedules, supports selection of specific regions for observation and automatic filtration of satellite passes over the selected regions. ...

Russian Space Science Internet (RSSI) is a successful result of RSSI Project. ... space oriented organizations; . ... RSSI offers for its members : . ... videoconferences via MBONE Internet protocol (there are 2 tunnels available now through the general IP network: one to NASA Internet, and another to Moscow State University); . ... It is designed so that all organizations connected to the RSSI gain access to the resources of Russian computer networks as well as world wide Internet. ... nic@rssi.ru ...

... Q My MGA PCI board is not recognized by the system when I try to use one of the MGA-supplied drivers such as Windows. ... A typical address would be A0000000. ... Q During the installation of the version 2.xx MGA Windows drivers, I select a monitor from the monitor selection dialog box and my screen goes black. ... A If you installed version 1.64 or less of the driver, your system may not have enough DOS memory to run the MGA configuration program while running the Microstation configuration program...

... Annual Meeting . ... Other Workshops, Conferences and Events . ... Special Events . Communicating Science: EPO Conference . Galileo Teacher Training Program Workshop . ... A National Conference on Science Education and Public Outreach . ... Much of the conference will be in the format of hands-on sessions, where we will practice effective techniques for sharing and discussing our work. ... The Communicating Science EPO conference program committee welcomes four kinds of abstracts: . ...