Thu, 03 Apr 2008 08:00:00 GMT
Have you ever peeked into one of those bazillion .el files in your Emacs installation's lisp folder and wondered what it meant? Or have you ever looked at a GIMP script .scm file and scratched your head over all the parentheses? Lisp is one of the oldest programming languages still in common use, and Scheme is a streamlined dialect of Lisp. Many universities use Scheme as the language to introduce students to the Computer Science curriculum, and some of their teaching methods are based on the assumption that Scheme is the one language they can count on their students knowing. Even so, many active programmers and system administrators are unfamiliar with Scheme. This article will get you on your way to adding this tool to your developer or sysadmin toolkit.
Hi Experts.
Finally I complete my move to Fedora distro :)
I am using the gedit editor and I'd like to customize it because I like to work with black color on background and green for text color (this remember me my university time), I did the same on UltraEdit tool before but here in gedit... (2 Replies)
Ok, I've already completed the task this is for, but now I'm trying to go back and find more eloquent solutions for future reference. I have a report I've generated that is formatted like this:
1033 1
1079 4
1453 5
2205 6
1933 7
461 8
646 9
1655 12
975 13
1289 14
The first number is... (3 Replies)
Hi
I have a sun server. Recently I have attached a new 80 GB disk. I would like to install the Solaris OS on this disk.
Now I would be installing some database on this disk.
I have decided to allocate a slice of 20GB or DB2 and one more slice of 20GB for Sybase.
The / partition would... (4 Replies)
im new to UNIX but i know some commands and i bought a book about it but what i was wondering is.. should i learn about it i don't have a job where i use it im still in high school so there isn't any classes i can take where i need to learn it i just wanted to see how it works. From what i've heard... (1 Reply)
Apache has an authentication scheme using .htaccess and a password file to authenticate people from accessing an area of the site.
Is there anyway to set .htaccess to use the Unix password file to authenticate users.
Thanks in advance
Vu (1 Reply)
LEARN(1) General Commands Manual LEARN(1)NAME
learn - computer aided instruction about UNIX
SYNOPSIS
learn [ -directory ] [ subject [ lesson ] ]
DESCRIPTION
Learn gives Computer Aided Instruction courses and practice in the use of UNIX, the C Shell, and the Berkeley text editors. To get started
simply type learn. If you had used learn before and left your last session without completing a subject, the program will use information
in $HOME/.learnrc to start you up in the same place you left off. Your first time through, learn will ask questions to find out what you
want to do. Some questions may be bypassed by naming a subject, and more yet by naming a lesson. You may enter the lesson as a number
that learn gave you in a previous session. If you do not know the lesson number, you may enter the lesson as a word, and learn will look
for the first lesson containing it. If the lesson is `-', learn prompts for each lesson; this is useful for debugging.
The subject's presently handled are
files
editor
vi
morefiles
macros
eqn
C
There are a few special commands. The command `bye' terminates a learn session and `where' tells you of your progress, with `where m'
telling you more. The command `again' re-displays the text of the lesson and `again lesson' lets you review lesson. There is no way for
learn to tell you the answers it expects in English, however, the command `hint' prints the last part of the lesson script used to evaluate
a response, while `hint m' prints the whole lesson script. This is useful for debugging lessons and might possibly give you an idea about
what it expects.
The -directory option allows one to exercise a script in a nonstandard place.
FILES
/usr/share/learn subtree for all dependent directories and files
/usr/tmp/pl* playpen directories
$HOME/.learnrc startup information
SEE ALSO csh(1), ex(1)
B. W. Kernighan and M. E. Lesk, LEARN - Computer-Aided Instruction on UNIX
BUGS
The main strength of learn, that it asks the student to use the real UNIX, also makes possible baffling mistakes. It is helpful, espe-
cially for nonprogrammers, to have a UNIX initiate near at hand during the first sessions.
Occasionally lessons are incorrect, sometimes because the local version of a command operates in a non-standard way. Occasionally a lesson
script does not recognize all the different correct responses, in which case the `hint' command may be useful. Such lessons may be skipped
with the `skip' command, but it takes some sophistication to recognize the situation.
To find a lesson given as a word, learn does a simple fgrep(1) through the lessons. It is unclear whether this sort of subject indexing is
better than none.
Spawning a new shell is required for each of many user and internal functions.
The `vi' lessons are provided separately from the others. To use them see your system administrator.
7th Edition October 22, 1996 LEARN(1)