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-rw-r--r--software/MOSS98
-rw-r--r--software/bash6
-rw-r--r--software/freebsd-packages46
-rw-r--r--software/matlab39
-rw-r--r--software/pynsfs150
-rw-r--r--software/sagemath23
6 files changed, 362 insertions, 0 deletions
diff --git a/software/MOSS b/software/MOSS
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+====
+MOSS
+====
+--------------------------------
+Many User Operating System Stuff
+--------------------------------
+
+:Author: Bryan Newbold
+
+Moss is a vague concept I have for an operating-system-like-system that
+attempts to realize some of the promises of distributed universal computing
+and user management, continuation-based serializable programming, persistent
+data accessibility, file and process versioning, central foreign function
+management, and code/content distribution. It'll be easy!
+
+.. topic:: Implementation
+
+ Moss would probably start as "stuff": middleware, userland applications,
+ utilities, and native shell and GUI interfaces. It could also be a
+ separate hosted virtual machine, a monolithic application, a kernel
+ extension, or ultimately run alone over a high performance shim host OS.
+
+ Distribution would be self hosting and viral: users would replicate a copy
+ of the system from a friend instead of from a central server, patches
+ and applications would be distributed word-of-mouth, and trust networks
+ would form naturally via this distribution. Customization and feature sets
+ would be passed on, which makes it likely that a user would receive a
+ system already tweaked for their own needs and computing knowledge level.
+
+ *Existing Projects:* Inferno, Xen, vmware, Java, GNU/*
+
+.. topic:: Universal, distributed file system
+
+ The core of the system would be a universally accessible identity-based
+ operating system. Some authoritive domain would probably be required, but
+ public identity brokers would allow anonymous identities. "Strong
+ Cryptography" is a goal, allowing a user's content to be hosted/cached
+ on third party machines in an encrypted form. The real challenge of course
+ is a flexible crypto system than can be transitioned or upgraded if a flaw
+ is discovered without total data loss.
+
+ My dream path would look something like::
+
+ /net/user@some.domain.tld/media/ledzep/tangerine.mp3
+
+ From the application end there would be no concept of "local" or "remote"
+ files to a particular machine, though perhaps some feedback on access time.
+ So, for instance, once tokens/authentication is handled, user utilities
+ like ``mv`` or ``cat`` could be applied, instead of ``scp`` or ``rcat``.
+
+ Versioning, write locks, etc would have to be considered.
+
+ *Existing projects:* OpenAFS, freeNet, ssh, kerberos, git
+
+.. topic:: Serializable Programs
+
+ The state/continuation/environment of a running program or chain of
+ programs should be a "first level object": a bundle of data like any other
+ that can be transmitted, copied, and stored away for later. A user should
+ be able to drag an entire application running on a desktop computer
+ onto their laptop when then need to travel, or from laptop to workstation
+ if then need additional computing power. Distributed computing could be
+ implemented by bundling up applets that are shot off to a cluster or
+ higher performance computer for processing, and the result state of the
+ program would simply be bundled back to the requesting client. Such bundles
+ wouldn't be very large: data would be stored on the distributed filesystem,
+ which appears identical (*exactly?*) to every node on the network.
+
+ Properly written, such a serializable system could also lead to performance
+ and power consumption savings by swapping idle programs and processes to
+ disk, or let low-usage nodes shift their processes off to other nodes
+ and power down.
+
+ *Existing Projects:* Lisp, Stackless
+
+.. topic:: Foreign Function Management
+
+ It would be nice to see a move away from the library model for shared
+ code to a more flexible/dynamic foreign function interface that would
+ allow any appropriate code to announce its availability to other
+ applications regardless of version, platform, coding language, etc.
+ This would be a high-level feature, not intended to replace kernel level
+ operations (read/write) but to make package/library management easier
+ (it doesn't matter if an image conversion function is coming from a video
+ editing package or libpng as long as it reads a raw array and returns
+ a binary stream).
+
+ There's room for dynamic optimization here: if program
+ realizes it's native string manipulation library sucks for 5meg+ datasets
+ it could look through the library and see if there's a better one.
+
+ *And,* this too could be distributed, allowing super easy access to
+ distributed computing resources; underutilized nodes could make their
+ functions available to nearby nodes, or a machine with tons of matrix
+ crunching silicon (eg high end video cards) could swap work units
+ with a machine with a dedicated crypto chip or 64bit+ processor.
+
+ *Existing Projects:* Script-fu from the Gimp
diff --git a/software/bash b/software/bash
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+==================
+BASH
+==================
+
+Job Control
+ The syntax for "job number" or "JOBSPEC" (when using ``kill`` or similar) is ``%4`` or ``%5``.
diff --git a/software/freebsd-packages b/software/freebsd-packages
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+========================
+FreeBSD Packages
+========================
+
+These are the packages I typically install for a workstation; this is after selecting an "X windows kernel developer" base system with ``sshd``, linux binary support, and NTP configured::
+
+ xmms-wma
+ xmms-flac
+ xmms-faad2
+ xmms
+ vim
+ emacs
+ mplayer
+ pork
+ ctorrent
+ teTeX
+ ipython
+ mit-scheme
+ py-numpy
+ py25-matplotlib
+ py25-scipy
+ bash
+ lighttpd
+ firefox
+ apache
+ fluxbox
+ xfce
+ git
+ subversion
+ pine
+ alpine
+ screen
+ python
+ vlc
+ gimp
+ xzgc
+ lyx
+ wget
+
+The following are added by hand from ports::
+
+ vlc
+ java
+ gtkchtheme
+ e2fsprogs
+
diff --git a/software/matlab b/software/matlab
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+==================
+Matlab
+==================
+
+.. warning::
+ Stub, just getting started
+
+`cyclismo.org <http://www.cyclismo.org/tutorial/matlab/matrix.html>`_ has a good tutorial.
+
+Matrix Syntax
+------------------
+A = [1,2,3,4]
+ creates a new matrix
+A(1)
+ selects the first element of a matrix, **zero-indexed**
+B = [ [1,2,3], [4,5,6], [7,8,9] ]
+ creates a one dimensional matrix
+
+::
+
+ B = [ [1,2,3],
+ [4,5,6],
+ [7,8,9] ]
+
+ creates a two dimensional matrix
+
+Matrix Operations
+------------------
+``inv``
+ inverts a square matrix
+
+Meta-Commands
+------------------
+Placing a semicolon at the end of a line prevents the output from being printed to screen.
+
+``whos``
+ Displays variables and their size
+``format long``/``format short``
+ Selects either 4 or 14 decimal place display
diff --git a/software/pynsfs b/software/pynsfs
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+++ b/software/pynsfs
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+=============================================
+Python Namespace File System
+=============================================
+
+:Author: Bryan Newbold
+:Date: July 2008
+:URL: http://git.bryannewbold.com?p=pynsfs;a=summary
+
+.. contents::
+
+This is an experimental implementation of a python namespace as a virtual
+file system, implemented using the python bindings for fusefs on unix.
+
+At this point only the global namespace of the filesystem instance itself is
+accessible, and only limited access is available to that. If anything goes
+wrong it can cause a hard lock and system crash; don't leave it running and
+don't try to write anything substantial.
+
+The source code can be checked out from the above URL.
+
+Features
+---------------
+An example session goes like::
+
+ snark# ls /mnt/python/
+
+ snark# python nsfs.py /mnt/python/
+ *** init complete
+ let's go!
+
+ snark# cd /mnt/python/
+
+ snark# ls -l
+ total 6
+ -r--r--r-- 1 root wheel 30 Dec 31 1969 DefaultStat
+ -r--r--r-- 1 root wheel 33 Dec 31 1969 DefaultStatVfs
+ -r--r--r-- 1 root wheel 19 Dec 31 1969 Fuse
+ -r--r--r-- 1 root wheel 30 Dec 31 1969 NamespaceFS
+ -r--r--r-- 1 root wheel 27 Dec 31 1969 NsfsFile
+ -r--r--r-- 1 root wheel 17 Dec 31 1969 StringIO
+ drwxr-xr-x 2 root wheel 0 Dec 31 1969 __builtins__
+ -r--r--r-- 1 root wheel 4 Dec 31 1969 __doc__
+ -r--r--r-- 1 root wheel 7 Dec 31 1969 __file__
+ -r--r--r-- 1 root wheel 8 Dec 31 1969 __name__
+ drwxr-xr-x 2 root wheel 0 Dec 31 1969 _find_fuse_parts
+ drwxr-xr-x 2 root wheel 0 Dec 31 1969 errno
+ drwxr-xr-x 2 root wheel 0 Dec 31 1969 fuse
+ -r--r--r-- 1 root wheel 29 Dec 31 1969 main
+ drwxr-xr-x 2 root wheel 0 Dec 31 1969 os
+ drwxr-xr-x 2 root wheel 0 Dec 31 1969 stat
+ -r--r--r-- 1 root wheel 24 Dec 31 1969 time
+
+ snark# ls stat/
+ ST_ATIME S_ENFMT S_IMODE S_ISDIR S_IWRITE
+ ST_CTIME S_IEXEC S_IREAD S_ISFIFO S_IWUSR
+ ST_DEV S_IFBLK S_IRGRP S_ISGID S_IXGRP
+ ST_GID S_IFCHR S_IROTH S_ISLNK S_IXOTH
+ ST_INO S_IFDIR S_IRUSR S_ISREG S_IXUSR
+ ST_MODE S_IFIFO S_IRWXG S_ISSOCK __builtins__
+ ST_MTIME S_IFLNK S_IRWXO S_ISUID __doc__
+ ST_NLINK S_IFMT S_IRWXU S_ISVTX __file__
+ ST_SIZE S_IFREG S_ISBLK S_IWGRP __name__
+ ST_UID S_IFSOCK S_ISCHR S_IWOTH
+
+ snark# cat time
+ <built-in function time>
+
+ snark# echo " Hello Python" >> os/__name__
+
+ snark# cat os/__name__
+ os Hello Python
+
+ snark# rm time
+
+ snark# ls
+ DefaultStat __builtins__ fuse
+ DefaultStatVfs __doc__ main
+ Fuse __file__ os
+ NamespaceFS __name__ stat
+ NsfsFile _find_fuse_parts
+ StringIO errno
+
+ snark# ln __nameofos__ os/__name__
+ ln: __nameofos__: No such file or directory
+
+ snark# ln os/__name__ __nameofos__
+
+ snark# cat __nameofos__
+ os Hello Python
+
+ snark# cd ..
+
+ snark# umount /mnt/python/
+
+The root directory is the global namespace; modules are available as
+subdirectories and all other objects are accessible as files. Strings can
+be appended to; all other "files" are readonly and return their string
+representation. "Files" can be deleted; "directories" can not. Hard links to
+files are possible.
+
+Requirements
+---------------
+
+This was developed and has only been tested on FreeBSD 7.0 with Python 2.5.1
+version 0.2 of the python-fuse bindings.
+
+* `FUSE Filesystem`__ installed and configured on a compatible operating system
+* Recent version of Python__
+* `FUSE Python Bindings`__
+
+Once everything is installed and configured, the script can just be run
+as root; no installation necessary.
+
+__ http://fuse.sourceforge.net/
+__ http://python.org
+__ http://fuse.sourceforge.net/wiki/index.php/FusePython
+
+Usage
+--------------
+Try ``# python nsfs.py -h`` to get a list of general FUSE options. A simple
+mount command would look like::
+
+ # python nsfs.py /mnt/python
+
+To unmount::
+
+ # umount /mnt/python
+
+I like to run in foreground, single threaded, with debug info::
+
+ # python nsfs.py -dsf /mnt/python
+
+Really only basic command line tools work because they don't check for many
+attributes; try ``echo "blah" >> file``, ``cat file``, ``df -h``, ``ls -l`` etc.
+
+TODO
+-----------------------
+Functions taking simple arguments (or no arguments) could be implemented as
+character devices; ``function_name.doc``, ``function_name.repr``, etc could
+give meta-information.
+
+File of the form ``__thing__`` should be renamed ``.thing``.
+
+New files should be allowed and saved as strings.
+
+CHANGELOG
+-----------------------
+
+July 28, 2008
+ First implementation
diff --git a/software/sagemath b/software/sagemath
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+==================
+SAGE Math Package
+==================
+
+.. warning:: Under progress!
+
+This is a reference for the `sage <http://sagemath.org>`_ math package.
+
+Web Notebooks
+-----------------------------
+To start run ``notebook()`` from an interactive shell; passing a directory as an argument will store files there. Also try``sage_wiki()``!
+
+To get help on a ``cmd`` type ``cmd?`` in an cell and press the Escape key.
+
+Interactive Shell
+-----------------------------
+Instead of the usual python ``**`` you can use ``^`` like the rest of the world, at least from the notebook and shell; use the old operator in scripts?
+
+Prefacing with ``time`` gives processor time statistics; you can wrap a series of commands with ``t = cputime()`` and ``cputime(t)`` to get the sum of time statistics; ``walltime`` works similarly.
+
+The general trick for saving text representations of objects is to open a file dscriptor and write the ``str`` of the object to it.
+
+``save_session`` and ``load_session`` save all objects in the session to a ``.sobj`` file.