Provided by: signify_1.14-7_all 
NAME
signify - Program to generate semi-random signatures
SYNOPSIS
signify [--fifo=$HOME/.signature] [--input=file] [--debug]
DESCRIPTION
Signify will take a signature description file ( ~/.signify or whatever file is specified
by the --input=<file> option ) and create a random signature based on the information
contained therein. This allows the ability to do such things as pick a random quote for
each message sent.
Signify, by default, will write the generated signature to standard output from where it
can be redirected to overwrite the .signature file. Alternatively, Signify can pipe it's
output to a given 'fifo'. Each read from that file will return a different signature.
To use the FIFO feature, delete the current "$HOME/.signature" file and start Signify in
the background like "signify --fifo=$HOME/.signature &". With this running, try "cat
$HOME/.signature" a few times. A different signature will be returned each time. (Note:
This feature will probably work only on unix systems.)
The --debug switch causes Signify to generate messages on what it is doing to stderr.
This switch is only meant to be useful to the program's maintainers.
CONFIGURATION
The definition for the generated signatures is contained entirely within the .signify file
contained in the user's home directory. Any completely empty lines (lines with even a
single space are considered part of the signature data) and those lines starting with a
hash character (#) are completely ignored. Those lines starting with a percent sign (%)
are considered commands and affect the way Signify behaves.
Perl Command Substitution
Signify can execute an arbitrary perl code fragment during the initial reading of the
configuration file. This can be used, for example, to choose values or text depending on
the environment in which Signify is being run. To use this feature, simply enclose the
desired perl code in back-tics (i.e. `perl code`). Whatever the perl code evaluates to
will be substituted in that spot. No further variable substitutions are made on the
resulting text. Signify is intelligent enough to recognize two back-tics together (often
used as a better looking quotation mark) as not being a code fragment. Thus, writing
something like "``Stop,'' she said." will appear as expected. Note: The entire code
fragment must be contained on a single line of the input file.
Defining Variables
Signify will substitute variables within each line of the signature in much the same way
as the shell would. Any sequence of $WORD; will be replaced by the value corresponding to
the name "WORD". Case is significant but the trailing semicolon may be omitted if the
next character is not a letter, digit, or underscore. By default, these variables look up
values inside the environment variables, but can also be defined or redefined within the
.signify file itself with a command such as:
% $email=myid@mycompany.com
Everything after the equal sign (=) is considered part of the value. Variables can be
used in the definition of other variables. As a special case, $$ will evaluate to a
single dollar sign ($).
The special variable SIGWIDTH can be used to set the desired output width of the generated
signature. By default, this variable has the value "79". There is also a BLANK variable
you can place on a line to create a totally empty line when the signature is output.
Including Other Files
You can tell Signify to read another file in place of the current line with a command
like:
% include $HOME/.signify-quotes
For convienence, you can use a tilde (~) instead of $HOME to read a file relative to your
home directory.
Creating Alternates
An unlimited number of "alternates" can be specified by using the "{", "|", and "}"
commands. When the signature is generated, only one of all the possible alternates will
be output. For example:
% {
This is the first possibility.
% |
This is the second possibility.
% |
This is the third (and last) possibility.
Note that alternatives can span multiple lines.
% }
Creating Columns
Signify will automatically create side-by-side columns with nice, even spacing by using
the "(", "|", and ")" commands. When output, everything will be padded out with spaces to
fit nicely on the line. For example:
% (
This is the
first column.
% |
This is the second.
% |
This is the third
(and last) column.
% )
Nesting Sections
Alternates and columns can be nested to any depth, though this can quickly become unwieldy
and may not work exactly as expected, especially with columns. As a general rule, only
supply alignment options (eg. "center", "right") at the most outside level to do any text
formatting. For example, if supplying multiple "alternates" within a column, put the
alignment options on the column and not on the alternates.
Section Command Options
The "alternates" and "columns" commands can take options to alter how they behave. The
following is a list of supported options and what they do, though not all have meaning for
both types of section. Multiple options can be specified by separating them with a comma
(,).
bottom push the following lines of text to the bottom of a column should it have fewer
lines than the longest column. This option has no meaning to "alternates"
sections.
center adjust the following lines to be centered on the page or in the column. When used
in an "alternates" section, an additional "=<number>" can be used to specify what
column to center around instead of the middle of the page.
exec treat the following lines not as text to be included in the column or alternate,
but as commands to be executed by the shell. For each command executed, if its
return status is 0 then the output it produced is included at that point, otherwise
the output is discarded. Any included text is then aligned, etc. as usual. This
command is most useful for inserting random quotes generated by programs such as
fortune(6).
left adjust the following lines so they sit at the left margin. This is the default
horizontal alignment and most closely reflects how the lines are entered into the
.signify file itself. Note that pad spaces will still be placed on both sides of a
column with this type of alignment unless the minwidth option is also specified.
minwidth
do not pad the left and right sides of this column when placing next to other
columns. This is useful for building column separator lines and the like that are
not really part of the content. This option has no meaning to "alternates"
sections.
repeat output the following lines multiple times to fill all lines in the column. This is
useful for building column separator lines and the like that are just a repeated
sequence. A multi-line sequence can be specified and only those lines necessary to
fill the column will be output. The entire sequence will be output in its entirety
at least once, however. This option has no meaning to "alternates" sections.
right adjust the following lines so they sit at the right margin. Note that pad spaces
will still be placed on both sides of a column with this type of alignment unless
the minwidth option is also specified.
top push the following lines of text to the top of a column should it have fewer lines
than the longest column. This is the default action if no vertical centering is
specified. This option has no meaning to "alternates" sections.
vcenter
push the following lines of text in the vertical center of a column should it have
fewer lines than the longest column. This option has no meaning to "alternates"
sections.
weight=<number>
change the likelihood a given alternate will be chosen. The chance of any specific
alternate being chosen is the given <number> divided by the total of all weights.
If not specified, the weight defaults to 1.0. Decimal numbers and numbers less
that 1.0 are allowed. This option has no meaning to "columns" sections.
THE COST OF FREE SOFTWARE
Let's face it: Somebody has to pay for all software that gets written. Whether it is the
time donated by the programmer or the salary donated by the company, everything has its
cost. Signify has been made available to the general public in the hope that it will be
useful and thus help raise the visibility of the people that sponsored its creation. In
this way, the cost of creating Signify is offset by the publicity gained. If you use this
program and would like to further the development of such software, it is asked (but by no
means required) that you put something like the following in the quotes section of your
.signify file.
% | center, weight=0.1
Generated by $PROGRAM. For this and more, visit $WEBSITE
(for single-line quote) or (for multi-line in a column)
% | weight=0.1
This signature was automatically generated with
$PROGRAM. For this and other cool products,
check out $WEBSITE
These are weighted very low (though you are more than welcome to increase these weightings
:-) and will thus show up in your signature only occasionally. The variables are defined
internal to Signify and provide the program name (including version number) and the web
site where it can be found. We thank you for your support!
BUGS
Please report any bugs to: bcwhite@pobox.com
AUTHOR
Signify was written and documented by Brian White <bcwhite@pobox.com> on August 24th,
1996.
COPYRIGHT
Signify has been placed in the public domain, the only true "free". It would be
apprecated if copies of any improvements or bug-fixes would be sent to the author in order
to be incorporated into the main upstream code and propagated to all users of this
software.