. To create a file with the cat command: cat > memo remember to make appointment at opticians get cost of scheduled flight to Athens Ctrl-d . This creates a file called memo in the current directory containing two lines of text. To create a file with the echo command: echo use an editor for large files > tips . This creates a file called tips in the current directory containing a single line of text.

Подписка на рассылку обзоров astro-ph на Subscribe.Ru . ... Предыдущий выпуск (N335) . ... Обсудить на форуме Scientific.RU . ... Подписка на рассылку обзоров на Subscribe.Ru . Обзоры препринтов astro-ph . ... Собственно обзоры препринтов. ... Ранее обзоры также были на Астронете и на Scientific.Ru . ... АНКи доступны на Астронете , а с 2006 по 2008 г. также на сайте Элементы.Ру . ... Ранее они также размещались на сайте Астронет и в архиве моих обозрений (кодировка KOI8) на сайте Scientific.Ru . ...

The "ring of fire" seen by satellite cameras around the polar caps (picture below) is probably created by electrons leaking from the tail's plasma sheet, whose magnetic field lines form a somewhat imperfect trap. ... One possible explanation involves the close association between auroral arcs and electric currents which flow along field lines between the ionosphere and distant space ( Birkeland currents ). ... That produces an extra resistance to the flow of current. ...

... Aurora from Space . ... Magnetic Storms . ... The "ring of fire" seen by satellite cameras around the polar caps (picture below) is probably created by electrons leaking from the tail's plasma sheet, whose magnetic field lines form a somewhat imperfect trap. ... One possible explanation involves the close association between auroral arcs and electric currents which flow along field lines between the ionosphere and distant space ( Birkeland currents ). ... Why no aurora at the magnetic poles? ...

Astronomy Picture of the Day . Mysterious Acid Haze on Venus . ... Credit: ESA / MPS , Katlenburg-Lindau , Germany Explanation: Why did an acidic haze spread across Venus? The unusual clouds were discovered last July by ESA 's robotic Venus Express spacecraft currently orbiting Venus . ... The above false-color picture of Venus was taken last July 23rd in ultraviolet light , and shows the unusual haze as relatively smooth regions across the image bottom. ... NASA Official: Jay Norris. ...

... R. E. Jackson . ... H.-M. Adorf . ... D. C. Wells . ... AstroWeb is a World Wide Web (WWW) interface to a collection of Internet accessible resources aimed at the astronomical community. ... The goal of AstroWeb is to be the most complete, up to date, and useful listing of Internet accessible astronomical resources available anywhere. ... Jackson, Wells, and Adorf noticed that they and others had created largely overlapping lists of Astronomical resources. ...

... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2012 July 18 . A Hole in Mars . Image Credit: NASA , JPL , U. Arizona . Explanation: What created this unusual hole in Mars? ... The hole appears to be an opening to an underground cavern, partly illuminated on the image right. ... About APOD | ... NASA Official: Phillip Newman Specific rights apply . ...

... Every morning, the LRPG determines if the previous night's batch-LRP was successful and examines any differences between the last released LRP and the current LRP. ... Was the nightly LRP run successful? ... check that an "AUTO" LRP was created for the most recently run nightly batch-LRP process. ... Daily working LRP names are alphabetically sequenced (A, B, C, ... under normal circumstances, often only A will get created and later released). ... For each run, two files are generally created. ...

The left mouse button controls the creation and manipulation of region markers or cursors. ... Text When a marker type of selected, new markers of that type can be created using the left mouse button. The current default marker type is displayed below the menu. ... Set Default Marker Name (and Color) . ... Reset the fix parameter state of currently existing markers to match the global state set by the -fix command switch or by the Edit Global Fix Params For New Markers option in the Markers menu. ...

Function: GETLOGNAM Purpose: Returns the log name of the current user. Category: UTILITY File: getlognam.c Author: K.G. Begeman Use: CALL GETLOGNAM( LOGNAM ) Output CHARACTER*(*) LOGNAM Name of user currently logged in. Warning: System dependent! Currently implemented for UNIX systems. Updates: Apr 27, 1991: KGB Document created.

Next: Modes of Operation Up: CCD Scientific Performance Previous: Field of View . Thermal excitation of charge carriers from the valence to the conduction band creates a dark current signal which may vary with position in the array, and also has temporal shot noise variation. ... In a device devoid of localized defects which give rise to individual dark current spikes , most dark current arises from electrons generated at interface states at the surface. ...