Archive for the ‘Linux’ Category

Another small linux astronomy software review

with one comment

This is a newer version of my post regarding linux astronomy software. Most of the programs mentioned in my previous article are updated constantly so there’s no need to re-dig these. Some new (or maybe unknown to most) apps could be of great assistance to your collection. I still believe that the best software for you is the one that you know to use best but sometimes we need more features or more automation to possible calculations or planning for our observations. For example i really like xephem but its so feature-complete that sometimes its scary!So, here we go..

For those with windows background i’m sure you had Virtual Moon Atlas installed for these bright full moon nights. Maybe justmoon is a bit old (but still kickin) so VMA has now a linux port with an installer to make our life easier. I found it a bit buggy or maybe it was my faulty configuration but anyhow its an atlas and its very usable. The search tool is very practical and i found especially nice the option to use a *very* high resolution texture for moon. You get very nice and detailed views and feels pretty much like moonwalking 😉

For all you aavso explorers fear not! Xvarstar is here to make your difficult task less cumbersome. Its main task is to search the GCVS catalogue for entries with criteria such as star name, magnitude, type, constellation, amplitude and of course a combo of all the above.

Another very interesting tool is ORSA. Its an interactive app used for computation and simulation of celestial mechanics. Asteroids, comets, artificial satellites, Solar and extra-Solar planetary systems can be accurately reproduced in your screen. It’s very nice to know how all this greatness works..

Where is M13? is a nice reference tool for dso. Every amateur astronomer should have this installed, because its another digital atlas for deep sky objects with many physical and positioning information. Knowing where an object is, in galactic terms (galactic coordinates) makes you understand where it actually is from a way different point of view.

Now, some apps for amateur telescope making. Most of these if not all, are for windows but have been tested with wine and dosbox and they seem to work flawlessly.

Aberrator is a freeware utility that creates planetary and star images that will be shown by your telescope along with possible distortions that me be produced. In the home page you will find some info about 3 optical design apps written by advanced amateur telescope makers.

Newt has been mentioned in my previous post. Just wanted to add that version 2.0 can be used with dosbox. A trully awesome application.

Last but not least, we have PLOP. It shows you how you may build an optimal mirror cell for your mirror, by providing you with info about possible errors in your build, an automatically generated mesh so you may be able to visualize your cell’s properties and show the graphical thermal distribution on your mirror. A must for any amateur telescope maker.

Written by aperturefever

July 21, 2010 at 11:37 pm

Dvorak keyboard layout

with 4 comments

Being messing with dvorak keyboard layout for a while. For some reason it seems logical to use it and its very comforting and forgiving to my wrists and especially my right hand ring finger which hurts me a lot the past 2 months. Below there are some interesting links that got me rolling.

and of course %setxkbmap dvorak

I found out that the best practice is to bind a pic in a key combo and use it when you need it. (e.g. in stumpwm i’ve  added (define-key *root-map* (kbd "M-a") "exec qiv ~/Images/dvorak.gif") and when i forget a letter i just refresh my memory using the pic of the layout.)

Written by aperturefever

June 16, 2010 at 9:11 pm

Posted in Linux

Tagged with , ,

Change keyboard layouts snippet

leave a comment »

Its just an easy practical way to add a keyboard shortcut for changing layouts without messing with your xorg.conf. Just place this in your xinitrc.

setxkbmap -layout us,gr -option grp:alt_shift_toggle -option grp_led:scroll

This way you change between layouts using left alt shift combo and when its activated the scroll lock led lights up.

Written by aperturefever

June 16, 2010 at 8:44 pm

Posted in Linux

Tagged with , , , , , ,


leave a comment »

I’ve uploaded some of my configs in github;. I see that it’s a common trend to do so and probably will be a gathering point for any coding i do, although i’ve not  really decided between bitbucket and github. For small projects i think hg is the way to go although git is much more complex and is best for large projects. Anyway time will tell.

UPDATE: I’ve updated everything but im so friggin bored to add them in nice.. ;p

Written by aperturefever

June 8, 2010 at 11:17 am

Updating stumpwmrc

leave a comment »

Posting the stumpwm configuration that I’m using for about a year now. It’s located also in the downloads section. My only task now is to find a way to use the conky configuration i have in musca along with the modeline to get rid some of its weird bugs.

;;Aperturefever/gammalyrae stump config
;;  Misc  ;;

(in-package :stumpwm)

(setf *default-package* :stumpwm)

;(set-font "-xos4-terminus-medium-r-normal--14-140-72-72-c-80-iso8859-7")
(set-font "-xos4-terminus-medium-r-normal--0-0-72-72-c-0-iso8859-7")
;(set-font "-*-dina-medium-r-normal-*-*-*-*-*-*-*-*-*")
;(set-font "-lispm-fixed-medium-r-normal-*-13-*-*-*-*-*-*-*")
;(set-font "-artwiz-smoothansi-medium-r-normal--13-130-75-75-m-60-iso8859-1")

;; Set up X cursor and colors.
(stumpwm:run-shell-command "xsetroot -cursor_name left_ptr -fg  white  -bg black")
;(stumpwm:run-shell-command "setxkbmap dvorak && xmodmap -e \'keycode 115 = F20\'")
;(stumpwm:run-shell-command "stumpbar")

;;   Lisp monitoring Scripts   ;;

(load "/home/shevek/progs/stumpwm/contrib/battery.lisp")
(load "/home/shevek/progs/stumpwm/contrib/cpu.lisp")
(load "/home/shevek/progs/stumpwm/contrib/net.lisp")
(load "/home/shevek/progs/stumpwm/contrib/mem.lisp")
;(load "/home/shevek/progs/stumpwm/contrib/wifi.lisp")

;;        Eye Candy         ;;


(setf *startup-message* nil)
(setf *startup-message* " ^2 ^b Hello George!^B Welcome to Stumpwm!^b ~& ^n Don't forget to check your ^8* TODO ^n list!!")


(defcommand my-shell-command (command) ((:string "sh$ "))
(check-type command string)
(shell-command command))

;;;; FRAMENUMBERING - check keybindings george---notifier

(setf *frame-number-map* "1234567890")


(set-bg-color "grey20")
;(set-fg-color "#97b26b")
;(set-fg-color "#20CBFE")
(set-fg-color "#a1b5cd")
;(set-fg-color "orange")
(set-border-color "grey10")
(set-msg-border-width 1)

(setf *message-window-gravity* :top-right
*timeout-wait*           6
*input-window-gravity*   :bottom-right)


(setf *colors* (append *colors*
(list "cyan" ;;"lightskyblue"
(update-color-map (current-screen))


(setf *mode-line-background-color* "grey20"
*mode-line-foreground-color* "#a1b5cd"
*mode-line-border-color*  "grey10"
*mode-line-border-width* 1
*mode-line-timeout*       5
*mode-line-position* :top
;*window-format* "< %n%s%m%30t >"
*window-format* "^B%m%n^b %15t"
*group-format*  "^8*%t%s  "

(list "^6*::^n  %g  ^6*::^n%w^6* :: ^8*CPU: ^n%f %C ^3*%t ^6*:: ^n^r%M ^6*:: ^n%b ^6*:: ^n %l ^6*::^8* - "
'(:eval (run-shell-command "date +\"%T %d-%m-%Y\" | tr -d '[:cntrl:]'" t))))

;; turn on/off the mode line for the current screen only.
(enable-mode-line (current-screen) (current-head) t)

(setf *maxsize-border-width* 3)
(set-frame-outline-width 1)
(set-focus-color   "dimgray")
(set-unfocus-color "grey10")
(set-normal-gravity :center)
(setf *normal-border-width* 3)
(setf *window-border-style* :thin)  ; thick,thin,none,tight

;;;; Display Keybinding - My version...

(defun key-press-hook (key key-seq cmd)
(declare (ignore key))
(unless (eq *top-map* *resize-map*)
(let ((*message-window-gravity* :bottom-right))
(message "Key sequence: ~A - "
(print-key-seq (reverse key-seq)) cmd))))

;; Give 'em time to read it.
(sleep 0.5)

(defmacro replace-hook (hook fn)
`(remove-hook ,hook ,fn)
`(add-hook ,hook ,fn))

(replace-hook *key-press-hook* 'key-press-hook)

;;;; Code by Male ---- Original...
;;;; Display the keysequence in progress
;;(defun key-press-hook (key key-seq cmd)
;;  (declare (ignore key))
;;  (unless (eq *top-map* *resize-map*)
;;    (let ((*message-window-gravity* :bottom-right))
;;      (message "Key sequence: ~A" (print-key-seq (reverse key-seq))))
;;    (when (stringp cmd)
;;      ;; Give 'em time to read it.
;;      (sleep 0.5))))

;;(defmacro replace-hook (hook fn)
;; `(remove-hook ,hook ,fn)
;; `(add-hook ,hook ,fn))

;;(replace-hook *key-press-hook* 'key-press-hook)
;;       Keybindings      ;;

;; change the prefix key to something else
(run-shell-command "xmodmap -e \'keycode 133 = F20\'" t)
(set-prefix-key (kbd "F20"))

(message "Loading stumpwmrc..")

(define-key *root-map* (kbd "Return") "exec urxvt")
(define-key *root-map* (kbd "b") "exec firefox")
(define-key *root-map* (kbd "a") "exec vup")
(define-key *root-map* (kbd "z") "exec vdown")
(define-key *root-map* (kbd "x") "exec vmute")
(define-key *root-map* (kbd "quoteleft") "gnext")
(define-key *root-map* (kbd "w") "windowlist")
(define-key *root-map* (kbd "M-g") "google")
(define-key *root-map* (kbd "M-w") "wikipedia")
(define-key *root-map* (kbd "M-i") "imdb")
;; Dirty ;(define-key *root-map*  (kbd "M-9") "exec setxkbmap us && xmodmap -e 'keycode 115 = F20' -e 'clear Lock'")
;; Dirty ;(define-key *root-map*  (kbd "M-0") "exec setxkbmap dvorak && xmodmap -e 'keycode 115 = F20' -e 'clear Lock'")
(define-key *root-map* (kbd "M-a") "exec qiv /mnt/mercury/dvorak.gif")
(define-key *root-map* (kbd "M-x") "exec ratmenu")
(define-key *root-map* (kbd "m") "fclear")

;(define-key *root-map* (kbd "1") "fselect 1")
;(define-key *root-map* (kbd "2") "fselect 2")
;(define-key *root-map* (kbd "3") "fselect 3")
;(define-key *root-map* (kbd "4") "fselect 4")
;(define-key *root-map* (kbd "5") "fselect 5")
;(define-key *root-map* (kbd "6") "fselect 6")
;(define-key *root-map* (kbd "7") "fselect 7")
;(define-key *root-map* (kbd "8") "fselect 8")
;(define-key *root-map* (kbd "9") "fselect 9")
;(define-key *root-map* (kbd "0") "fselect 0")

;;    Groups    ;;

;; Rename the first group to Main
(setf (group-name (first (screen-groups (current-screen)))) "Main")
;; Create the other groups.
(run-commands "gnewbg www" "gnewbg devel" "gnewbg media" "gnewbg chat")
;;  Custom Commands  ;;

(defun shell-command (command)
"Stumpwm might hang here :/"
(check-type command string)
(echo-string (current-screen) (run-shell-command command t)))

(defcommand weatherget () ()
"Display weather info in Greece."
(shell-command "weatherget -s GRXX0004 --metric"))

(defcommand dfh () ()
(shell-command "df -h"))

(defcommand moon () ()
"Moon Info"
(shell-command "less ~/sources/stumpwm/astroinfo/moon"))

(defcommand mocpinfo () ()
"MOC info"
(shell-command "mocpinfo"))

(defcommand mocosd () ()
"MOC info"
(shell-command "mocosd"))

(defcommand monitoroff () ()
"Monitor Off"
(shell-command "sleep 1 && xset dpms force off"))

(defcommand dmenu () ()
(run-shell-command "dmenu_run -nb grey20 -nf orange -fn '-windows-dina-medium-r-normal--13-80-96-96-c-70-microsoft-cp1252'"))
(define-key *root-map* (kbd "[") "dmenu")

;;    Web jump (works for Google, Wikipedia and Imdb)    ;;

(defmacro make-web-jump (name url-prefix)
`(defcommand ,name (search) ((:rest ,(string-capitalize (string-downcase (concatenate 'string (symbol-name name) ": ")))))
(run-shell-command (format nil "firefox '~A=~A'"
,url-prefix (substitute #\+ #\Space search)))))

(make-web-jump imdb "")
(make-web-jump google "")
(make-web-jump wikipedia "")

;;;  Qwerty - Dvorak  ;;;

;; keyboard layout
(defvar *keyboard-layout* :qwerty)
;(run-shell-command "setxkbmap us")
;(run-shell-command "xmodmap -e \'clear Lock\' && xmodmap -e \'keycode 66 = Tab\'")

(defcommand toggle-keyboard-layout () ()
(cond ((eq *keyboard-layout* :qwerty)
(setf *keyboard-layout* :dvorak)
(message "^7* Selected keyboard layout:^2* Dvorak")
(run-shell-command "xmodmap ~/.Xmodmap && setxkbmap dvorak"))
((eq *keyboard-layout* :dvorak)
(setf *keyboard-layout* :qwerty)
(message "^7* Selected keyboard layout:^3* Qwerty")
(run-shell-command "xmodmap ~/.Xmodmap && setxkbmap us"))))

(define-key *root-map* (kbd "F12") "toggle-keyboard-layout")

;;   Some mousey stuff    ;;

(setf *mouse-focus-policy* :click) ;; :click, :ignore, :sloppy

;;; Astro info and calculations ;;;

;;;   Some Startup progies   ;;;

(defcommand firefox () ()
"run firefox"
(run-or-raise "firefox" '(:class "Firefox")))

(defcommand dolphin () ()
"run firefox"
(run-or-raise "dolphin" '(:class "dolphin")))

(defcommand amarok () ()
"run firefox"
(run-or-raise "amarok" '(:class "Amarok")))

(defcommand pidgin () ()
"run firefox"
(run-or-raise "pidgin" '(:class "Pidgin")))

(defcommand Urxvt () ()
"run an urxvt instance"
(run-or-raise "xterm -name Urxvt" '(:instance "Urxvt")))

;;;  Window placement rules  ;;;

;; Clear rules

(define-frame-preference "Main"
;; frame raise lock (lock AND raise == jumpto)
(0 t   t :class "Urxvt"))

(define-frame-preference "media"
;; frame raise lock (lock AND raise == jumpto)
(0 t   t :class "dolphin"))

(define-frame-preference "media"
;; frame raise lock (lock AND raise == jumpto)
(0 t   t :class "Amarok"))

(define-frame-preference "www"
;; frame raise lock (lock AND raise == jumpto)
(0 t   t :class "Firefox"))

(define-frame-preference "chat"
;; frame raise lock (lock AND raise == jumpto)
(0 t   t :class "Pidgin"))

;;;   Random Background   ;;;

;(defvar *background-image-path* "/mnt/mercury/Images/EyeStrain")
;(defun select-random-background-image ()
;  "Select a random image"
;  (let ((file-list (directory (concatenate 'string *background-image-path* "*.jpg")))
;        (*random-state* (make-random-state t)))
;    (namestring (nth (random (length file-list)) file-list))))
;(run-shell-command (concatenate 'string "display -window root " (select-random-background-image)))

;;;  Show me Info  ;;;

(setf *debug-level* 10)

I will also post some calculations to be placed in it for quick reference(probably bind it in a command or sth). E.g. calculating how fast does a comet or an asteroid move using a formula like this: 2 * pi * sqrt(2/r – (1-e)/q) AU/year, maybe formulas to convert right ascension and declination to altitude and azimuth and a way to easily find my current longitude and latitude.

Written by aperturefever

May 10, 2010 at 10:55 am

Quick dual head setup

leave a comment »

Mostly a note to self. A quick way to setup dual screens without messing with the xorg.conf is to run

xrandr -q

to see any info you need regarding the devices and their specifications and then issue

xrandr --output VGA1 --right-of LVDS1 --auto

(Orientation options: right, left, above or below) It works perfectly even if both screens have different resolutions. For this screen all i do is add these two lines in my .xinitrc

xrandr --output VGA1 --off
xrandr --output LVDS1 --mode 1280x800 --output VGA1 --mode 1024x768 --right-of LVDS1 --auto

Written by aperturefever

May 9, 2010 at 6:39 pm

Musca/dzen2 tips and tricks – Part 1

leave a comment »

So you decided to give musca a go. Here are some stuff i use in my setup. I hope someone out there finds these useful.

One thing that musca lacks is a toolbar, but as the author suggests, dzen2 is a nice alternative. And guess what, he’s right.
dzen2 is so customizable that you ‘re to able to do nice magic with it. For example:

Why open a terminal to find your disk space or waste useful resources to have it displayed on conky?
Add sth like that in your .musca_start and you ll be able to call a new command named dfh to watch your disk space status.

alias dfh exec (echo Disk Usage; df -h ; sleep 4) | dzen2 -l 17 -fg white -bg grey10 -w 400 -fn '-*-dina-medium-r-normal-*-*-*-*-*-*-*-*-*' -e 'onstart=uncollapse' 

Weather conditions are vital for astro-sessions so having some extra info is practical too
e.g. for Greece using the weatherget application i have sth like this:

alias weatherget exec (echo Weather Report; weatherget -s GRXX0004 --metric ; sleep 4) | dzen2 -l 17 -fg white -bg grey10 -w 400 -fn '-*-dina-medium-r-normal-*-*-*-*-*-*-*-*-*' -e 'onstart=uncollapse'

At the time setting rules is not ready in musca. But guess what! Musca is so groovy that you can actually “emulate” such configuration. Example.. I want to have gimp start in stacked mode or in a preconfigured tiled layout.

alias g1mp exec gimp
hook on ^g1mp stack on

if gimpfoo is a layout that suits your tastes for gimp window placement

hook on ^g1mp load gimpfoo

So when pressing Mod+m and typing g1mp you’ll have gimp in stacked mode 😀

to be continued! 😀

Written by aperturefever

June 8, 2009 at 7:23 pm