SCCS-vsn: usr.bin/learn/learn/learn.1 5.1
-.\" @(#)learn.1 4.1 (Berkeley) %G%
+.\" @(#)learn.1 5.1 (Berkeley) %G%
+.TH LEARN 1 "26 April 1983"
.AT 3
.SH NAME
learn \- computer aided instruction about UNIX
.AT 3
.SH NAME
learn \- computer aided instruction about UNIX
-[ subject [ lesson [ speed ] ] ]
-gives CAI courses and practice in the use of UNIX.
-To get started
-simply type `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
+.BR learn .
The program will ask questions to find out what
you want to do.
The program will ask questions to find out what
you want to do.
-The questions may be bypassed by naming a
-.I subject,
-and the last
+Some questions may be bypassed by naming a
+.IR subject ,
+and more yet by naming a
+.IR lesson .
+You may enter the
-told you in the previous session.
-You may also include a
-.I speed
-number that was given with the lesson number
-(but without the parentheses that
+gave you in a previous session.
+If you do not know the lesson number,
+you may enter the
+.I lesson
+as a word, and
-places around the speed number).
-If
+will look for the first lesson containing it.
+If the
.I learn
prompts for each lesson;
this is useful for debugging.
.PP
The
.I learn
prompts for each lesson;
this is useful for debugging.
.PP
The
+.if n .sp 1v
+.if t .sp .5v
- editor
- eqn
- files
- macros
- morefiles
- C
+ files
+ editor
+ vi
+ morefiles
+ macros
+ eqn
+ C
-The special command
-`bye' terminates a
+There are a few special commands.
+The command `bye' terminates a
+session and `where' tells you of your progress,
+with `where\0m' telling you more.
+The command `again' re-displays the text of the lesson
+and `again\0\fIlesson\fP' lets you review
+.IR lesson .
.PP
The
.BI \- directory
option allows one to exercise a script in
a nonstandard place.
.SH FILES
.PP
The
.BI \- directory
option allows one to exercise a script in
a nonstandard place.
.SH FILES
-/usr/learn and all dependent directories and files
+.nf
+/usr/lib/learn subtree for all dependent directories and files
+/usr/tmp/pl\(** playpen directories
+.SH SEE ALSO
+csh(1), ex(1)
.SH BUGS
The main strength of
.I learn,
.SH BUGS
The main strength of
.I learn,
-that it asks the student to use the real
-UNIX, also makes possible baffling mistakes.
+that it asks the student to use the real UNIX,
+also makes possible baffling mistakes.
It is helpful, especially for nonprogrammers,
to have a UNIX initiate near at hand during the first
sessions.
.PP
Occasionally lessons are incorrect, sometimes because the local version
of a command operates in a non-standard way.
It is helpful, especially for nonprogrammers,
to have a UNIX initiate near at hand during the first
sessions.
.PP
Occasionally lessons are incorrect, sometimes because the local version
of a command operates in a non-standard way.
-Such lessons may be skipped,
+Such lessons may be skipped with the `skip' command,
but it takes some sophistication to recognize
the situation.
but it takes some sophistication to recognize
the situation.
+.PP
+To find a
+.I lesson
+given as a word,
+.I learn
+does a simple
+.IR fgrep (1)
+through the lessons.
+It is unclear whether this sort
+of subject indexing is better than none.
+.PP
+Spawning a new shell is required for each of many
+user and internal functions.