... Forum: The Linux Kernel Hackers' Guide . Keywords: direct copy, user space, kernel space . ... in my first kernel-related project, i want to copy data in the kernel from one process to another. I have the start point/size of the user-level buffers, but i found no way to do a _direct_ copy. ... Of course, i could do a kmalloc, copy to kernel, wake up the read, copy from the kmalloc'd area, kfree the area, but ... that is too much overhead. ...

Lars Wirzenius . ... This is version 0.4 of the Linux System Administrators' Guide. ... Permission is granted to make and distribute verbatim copies of this manual provided the copyright notice and this permission notice are preserved on all copies. ... Permission is granted to copy and distribute modified versions of this manual under the conditions for verbatim copying, provided that the entire resulting derived work is distributed under the terms of a permission notice identical to this one. ...

The sections <Directory> , <Location> and <Files> can contain directives which only apply to specified directories, URLs or files respectively. Also htaccess files can be used inside a directory to apply directives to that directory. ... The order of merging is: . ... If multiple <Directory> sections apply to the same directory they are processed in the configuration file order. ... Using the options in question is only possible inside a <Directory> section (or a .htaccess file). ...

... First of all, I should say that you cannot guarantee user-mode processes to have exact control of timing because of the multi-tasking nature of Linux. ... However, for most applications using I/O ports, this does not really matter. To minimise this, you may want to nice your process to a high-priority value (see the nice(2) manual page) or use real-time scheduling (see below). ... Linux 2.x kernels have soft real time support; see the manual page for sched_setscheduler(2) for details. ...

. To change your current working directory use the command: cd pathname . where pathname specifies the directory that you want to move to. The pathname can be given as either a full pathname or a relative pathname . Examples . Did You Know? .

... It also provides log file of the consoles. ... Makefile first attempt at a Makefile console.c client sources conserver.c server sources cons.h source configuration constab sample config file console.1 man pages constab.5 conserver.8 BUILDING and INSTALLING First off, this stuff isn't guarenteed to work, or compile or anything. ... This compiles the client and server. ... Edit /etc/constab (on the machine which will be the console server), and create whatever directories you need for the log files. ...

... Up: Science Data Pipelines . ... The Chandra Automatic Data Processing System (AP) requires quick access to previously generated data. ... This archive interface layer includes an archive request queue, a data archiving server (darch), and an archive ``cache''. ... In our implementation, the cache is actually a directory where the data files reside, as shown in Figure 1 . ... If the data products are not in the cache, then the pipeline retrieves the files from the archive database. ...

Installation can be tricky on a machine with 4 megabytes of RAM or less. ... Symptoms might include: system hangs while booting the bootdisk; root password required on the rootdisk; inability to run "fdisk" or "mkswap"; and many more, I'm sure.. If you have DOS and a 5 1/4" floppy drive, you can save 240K by using Loadlin in conjunction with a 5 1/4" rootdisk. ... Unzip lodlin15.zip (look in /kernels) in a directory on your DOS partition. ... Copy it into the directory where you put loadlin. ...

... Finding Stars . ... Handling Bad Pixels . ... The guide camera image controller can control one or more guide cameras. ... Each time the camera is read, the image is automatically saved to a fits file on a shared disk. ... Cameras that have bad pixels require "bad pixel maps" in order to find stars, centroid or even compute statistics for the image. ... View this image (for instance in NIH Image) and determine an upper and lower cutoff; pixels whose values are outside of this range are considered...

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Microsymposium 34, MS047, 2001 SOME PROBLEMS OF THE EVOLUTION OF ASTEROIDS ­ RUBBLE PILE. ... Evidently, we can distinguish two processes: distant interactions, where there is no direct contact between separate fragments, and close contact interactions, where the fragments collide with one another. ... Such a rubble pile with a dust atmosphere differs from a cometary nucleus only in the absence of a volatile gas component, which is usually considered the cause of the appearance of cometary dust. ...

... FileљStructure . ... After downloading all the catalogues, the paths to the various files should look like this: Installation Data Directory / stars / default / stars _0_0v0_1.cat Installation Data Directory / stars / default / stars _1_0v0_1.cat Installation Data Directory / stars / default / stars _2_0v0_1.cat Installation Data Directory / stars / ... In this case, all the files would be in the <Installation Data Directory>/stars/default directory. ...

... VaST is a software tool for finding variable objects on a series of astronomical images. ... VaST performs object detection and aperture photometry using SExtractor on each image, cross-matches lists of detected stars, performs magnitude calibration with respect to the first (reference) image and constructs a lightcurve for each object. ... VaST FITS image viewer ./pgfv . ... Part I" PZP, vol. ... K. V. Sokolovsky, S. A. Korotkiy; "New Variable Stars Discovered by the NMW Survey" PZP, vol. ...