Next: Using UNIX System Calls and Library Functions Up: UNIX and C Previous: UNIX and C . Portability - UNIX, or a variety of UNIX, is available on many machines. Programs written in standard UNIX and C should run on any of them with little difficulty. ... File handling - hierarchical file system with many file handling routines. Shell Programming - UNIX provides a powerful command interpreter that understands over 200 commands and can also run UNIX and user-defined programs. ...

There are various kinds of generic information you can retrieve about an XPA access point by using the xpaget command. ... Each XPA access point supports a number of reserved sub-commands that provide access to different kinds of information, e.g. the access control for that access point. ... acl get (set) the access control list [options: host type acl, for set] . ... This access point is available only on the server machine. -env get (set) an environment variable [options: name (value, for set)] . ...

... Apache HTTP Server Version 2.2 . ... This document describes the use of Apache's Handlers. ... A "handler" is an internal Apache representation of the action to be performed when a file is called. Generally, files have implicit handlers, based on the file type. Normally, all files are simply served by the server, but certain file types are "handled" separately. ... The following directives will enable the send-as-is handler, which is used for files which contain their own HTTP headers. ...

... AstroAsciiData is a Python module to handle ASCII tables. ... The idea to develop this Python module emerged from the fact that ASCII tables continue to be one of the most popular and widely used data exchange formats in astronomy and probably science in general. ... To load this ASCII table, go into Python, load the AstroAsciiData module and read in the table with: . ... demo = asciidata.open('webexa.txt') . ... Users who only want to work with ASCII tables neeed no further python modules. ...

... From left to right, the columns list the machine acronym, the present access of the machines to outside users, the operating mode, total bandwidth (MHz), number of frequency channels, bandwidth per channel (kHz), shortest sampling interval (us), number of bits recorded per sample, number of polarizations recorded and the data storage method. ... Disk . ... Timing . ... Baseband . ... Data sampling: 4-bit in search mode, 6-bit in timing mode . ... Mode(s) of operation: baseband recording and timing ....

... Apache HTTP Server Version 2.2 . ... This document describes the use of Apache's Handlers. ... A "handler" is an internal Apache representation of the action to be performed when a file is called. Generally, files have implicit handlers, based on the file type. Normally, all files are simply served by the server, but certain file types are "handled" separately. ... The following directives will enable the send-as-is handler, which is used for files which contain their own HTTP headers. ...

... Science . ... Science Users Information > Science Archive Facility > Request Handler FAQ . ... Data Handling and Products . ... ESO Data . ... Also, please double-check that you have entered correctly the full address of the service ( http://www.eso.org/requestHandler/pipacks ), including the leading triple w. Answer: The packages contain the raw data belonging to the selected run, the associated raw calibrations, the masters derived from them and the pipeline science products generated from them...

. XMM-Newton Science Analysis System . ssclib (ssclib-3.33.4) [xmmsas_20080701_1801-8.0.0] . Meta Index / Home Page . Module name: Fitsplutils . Author: Masaaki Sakano (University of Leicester, mas@star.le.ac.uk) . See the header of the library code for detail. You may want to read it, for example, cd /YOUR/DIR; pod2man Fitsplutils.pm | tbl | neqn | nroff -h -man | less . XMM-Newton SOC/SSC -- 2008-07-01

... Garage/Shop Building . ... APO Site Safety Plan . ... When in doubt, contact the Site Manager . ... In the event of an emergency , it is best to contact the Site Manager, Safety Officer , or other APO personnel listed on the APO emergency phone lists located in all control rooms and the Supply area. ... Do not enter this area without a safety briefing ; contact the Site Manager . ... Special training and safety equipment is required before handling cryogenics; contact Site Manager . ...

The File System . ... All time-sharing computers provide for the necessary controls by a system of protection and privilege . ... The owner of a file is the user whose UIC matches the OWNER_UIC file attribute. ... When world access is set, the file can be used by anybody who can log on to the system or access it over the network, regardless of their UIC. ... File protections can be set to take away access privileges by simply specifying the class of user without any access types. ... Backup . ...

To use single quotes to inhibit command substitution: #!/bin/sh trap 'echo `pwd` >>$HOME/errdir' 2 3 15 for i in /bin /usr/bin /usr/any/bin do cd $i some series of commands in the directory $i done . The file errdir will contain the name of the directory being worked on when the procedure is interrupted. ... To remove temporary files when a procedure is interrupted: #!/bin/sh temp=/tmp/file.$$ trap 'rm $temp; exit' 0 1 2 3 15 ls > $temp .. ...

Next: The Importance of Mid-Range Telescope Data Archives - an Example of Ondejov Observatory 2-meter Telescope . ... 216, Astronomical Data Analysis Software and Systems IX, eds. N. Manset, C. Veillet, D. Crabtree (San Francisco: ASP), 149 . ... In this paper, the mechanism allowing the handling and on-line archiving of technical and scientific data from the Italian National Galileo Telescope (TNG) is described; the experience made during the initial months of operations is also discussed. ...

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. ...

This module illustrates many of the aspects of the Apache 1.2 API and, when used, demonstrates the manner in which module callbacks are triggered by the server. ... Source File: mod_example.c . ... The files in the src/modules/example directory under the Apache distribution directory tree are provided as an example to those that wish to write modules that use the Apache API. ... Example . ... Uncomment the "AddModule modules/example/mod_example" line near the bottom of the src/Configuration file. ...

... Classes . ... Classes for operating system services, and assorted other things. ... A class with virtual functions to convert canonical format. ... Abstract base class with functions to convert any format. ... A class with static functions to convert IBM format. ... A class with virtual functions to convert IBM format. ... A class with static functions to convert little endian canonical format. ... A class with static functions to convert VAX format. ... Internal OS_module classes and functions. ...

... Driver ID: LOCAL . This is a hack to allow a machine to use its own system clock as a reference clock, i.e., to free-run using no outside clock discipline source. ... Another application for this driver is if a particular server clock is to be used as the clock of last resort when all other normal synchronization sources have gone away. ... This driver provides a mechanism to trim the local clock in both time and frequency, as well as a way to manipulate the leap bits. ... Not used by this driver. ...

Some advice about accessing the PWF Linux system over a network connection. In addition to the workstations in the Physics PWF, there is a server system accessible over the network from Colleges and other parts of the University, whose address is linux.phy.pwf.cam.ac.uk . This machine gives you the same Linux operating system as the PWF workstations, and access to the same programs, libraries and files, but is only accessible by using a secure network connection. ...

... spectrum . ... SPECTRUM will compute synthetic spectra, line profiles equivalent widths, specific intensities, assuming LTE, from model atmospheres of early-type stars. ... sterne models . file containing model atmosphere in 2006 Sterne format . ... T=25000, log g=4.0, vt=0, 1400-1415A. a) NLTE model atmosphere, spectrum computed with SYNSPECv25 (black). b) LTE model atmosphere, same linelist in converted format, spectrum computed with SPECTRUM (red) using this input file and this linelist . ...

Next: Calculation of Evolutionary Tracks Up: The Scenario Machine: Operational Previous: How to Catch ``Rare'' . An algorithm of the Scenario Machine work can be subdivided in three main parts (see Figure 14 ): . ... calculation of a given evolutionary track; . ... The algorithms used for the first and third points are quite standard (see, for example, Sobol', 1973[ 183 ] and Ermakov, 1985[ 50 ]); the shapes of the initial distributions are discussed below. ...

... Stellar Evolution . Nucleosynthesis in Stars . The Evolution of Star Clusters . JAVA Physics Lab . Alternative Energies Class . Steve Kevan's Physics 251 Class . ... Talk on Solid State Physics of CCD detectors . Talk on Cosmological Issues . ... Digital Spectra of Stars . NETexperts E-mail List . The Electronic Universe Project e-mail: nuts@moo.uoregon.edu ...