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cook - Online in the Cloud

Run cook in OnWorks free hosting provider over Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator

This is the command cook that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator

PROGRAM:

NAME


cook - a file construction tool

SYNOPSIS


cook [ option... ][ filename... ]
cook -Help
cook -VERSion

DESCRIPTION


The cook program is a tool for constructing files. It is given a set of files to create,
and instructions detailing how to construct them. In any non-trivial program there will
be prerequisites to performing the actions necessary to creating any file, such as
extraction from a source-control system. The cook program provides a mechanism to define
these.

When a program is being developed or maintained, the programmer will typically change one
file of several which comprise the program. The cook program examines the last-modified
times of the files to see when the prerequisites of a file have changed, implying that
the file needs to be recreated as it is logically out of date.

The cook program also provides a facility for implicit recipes, allowing users to specify
how to form a file with a given suffix from a file with a different suffix. For example,
to create filename.o from filename.c

Options and filenames may be arbitrarily mixed on the command line; no processing is done
until all options and filenames on the command line have been scanned.

The cook program will attempt to create the named files from the recipes given to it.
The recipes are contained in a file called Howto.cook in the current directory. This
file may, in turn, include other files containing additional recipes.

If no filenames are given on the command line the targets of the first recipe defined are
cooked.

OPTIONS


The valid options for cook are listed below. Any other options (words on the command
line beginning with `-') will cause a diagnostic message to be issued.

-Action
Execute the commands given in the recipes. This is the default.

-No_Action
Do not execute the commands given in the recipes.

-Book filename
Tells cook to used the named cookbook, rather than the default ``Howto.cook''
file.

-CAScade
This option may be used to enable the use of cascaded ingredients. This is the
default.

-No_CAScade
This option may be used to disable the use of cascaded ingredients.

-Continue
If cooking a target should fail, continue with other recipes for which the failed
target is not an ingredient, directly or indirectly.

-No_Continue
If cooking a target should fail, cook will exit. This is the default.

-CTime The inode st_ctime data is used to supplement the st_mtime data when determining
whether or not files have changed. This is the default. (If you have no idea
what this is, don't mess with it.)

-No_CTime
Do not supplement st_mtime with st_ctime. This may be important when st_nlink
changes at critical times, because making and breaking hard links touches
st_ctime. (If you have no idea what this is, seriously, don't mess with it.)

-Errok
When a command is executed, the exit code will be ignored.

-No_Errok
When a command is executed, if the exit code is positive it will be deemed to
fail, and thus the recipe containing it to have failed. This is the default.

-FingerPrint
When cook examines a file to determine if it has changed, it uses the last-
modified time information available in the file system. There are times when
this is altered, but the file contents do not actually change. The
fingerprinting facility examines the file contents when it appears to have
changed, and compares the old fingerprint against the present file contents.
(See cookfp(1) for a description of the fingerprinting algorithm.) If the
fingerprint did not change, the last-modified time in the file system is ignored.
Note that this has implications if you are in the habit of using the touch(1)
command - cook will do nothing until you actually change the file.

-No_FingerPrint
Do not use fingerprints to supplement the last-modified time file information.
This is the default.

-FingerPrint_Update
This option may be used to scan the directory tree below the current directory
and update the file fingerprints. This helps when you use another tool (such as
RCS or ClearCase) which alters the file but preserves the file's modification
time.

-Force
Always perform the actions of recipes, irrespective of the last-modified times of
any of the ingredients. This option is useful if something beyond the scope of
the cookbook has been modified; for example, a bug fix in a compiler.

-No_Force
Perform the actions of the recipes if any of the ingredients are logically out of
date. This is the default.

-Help
Provide information about how to execute cook on stdout, and perform no other
function.

-Include filename
Search the named directory before the standard places for included cookbooks.
Each directory so named will be scanned in the order given. The standard places
are $HOME/.cook then /usr/share/cook.

-Include_Cooked
This option may be used to require the cooking of files named on #include-cooked
and #include-cooked-nowarn include lines in cookbooks. The files named will be
included, if present. If the files named need to be updated or created, this
will be done, and then the cookbook re-read. This is the default.

-No_Include_Cooked
This option may be used to inhibit the implicit cooking of files named on
#include-cooked and #include-cooked-nowarn include lines in cookbooks. The files
will be included, if present, but they will not be updated or created, even if
required.

-Include_Cooked_Warning
This option enables the warnings about derived dependencies in derived cookbooks.
This is usually the default.

-No_Include_Cooked_Warning
This option disables the warnings about derived dependencies in derived
cookbooks.

-List
Causes cook to automatically redirect the stdout and stderr of the session.
Output will continue to come to the terminal, unless cook is executing in the
background. The name of the file will be the name of the cookbook with any
suffix removed and ".list" appended; this will usually be Howto.list. This is
the default.

-List filename
Causes cook to automatically redirect the stdout and stderr of the session into
the named file. Output will continue to come to the terminal, unless cook is
executing in the background.

-No_List
No automatic redirection of the output of the session will be made.

-No_List filename
No automatic redirection of the output of the session will be made, however
subsequent -List options will default to listing to the named file.

-Meter
After each command is executed, print a summary of the command's CPU usage.

-No_Meter
Do not print a CPU usage summary after each command. This is the default.

-Pairs
This option may be used to generate a list of pair-wise file dependencies,
similar to lorder(1) output. This may be used to draw file dependency diagrams.
It can also be useful when debugging cookbooks.

-Page-Length number
This option may be used to set the length of the page, used when Cook needs to
paginate output. Defaults to what the LINES environment variable tells it, or
the terminal emulator tells it if LINES isn't set. -Page-Width number This
option may be used to set the width of the page, used when Cook needs to wrap
output (e.g. when it prints commends being executed). Defaults to what the COLS
environment variable tells it, or the terminal emulator tells it if COLS isn't
set. The maximum value for number is 32767.

-PARallel [ number ]
This option may be used to specify the number of parallel executions threads.
The number defaults to 4 if no specific number of threads is specified. See also
the parallel_jobs variable.

Use of this option on single-processor machines needs to be done with great care,
as it can bring other processing to a complete halt. Several users doing so
simultaneously on a multi-processor machine will have a similar effect. It is
also to rapidly run out of virtual memory and temporary disk space if the
parallel tasks are complex.

-No_PARallel
This option may be used to specify that a single execution thread is to be used.
This is the default.

-Precious
When commands in the body of a recipe fail, do not delete the targets of the
recipe.

-No_Precious
When commands in the body of a recipe fail, delete the targets of the recipe.
This is the default.

-Reason
Two options are provided for tracing the inferences cook makes when attempting to
cook a target. The -Reason option will cause cook will emit copious amounts of
information about the inferences it is making when cooking targets. This option
may be used when you think cook is acting strangely, or are just curious.

-No_Reason
This option may be used to cause cook will not emit information about the
inferences it is making when cooking targets. This is the default.

-SCript
This option may be used to request a shell script be printed on the standard
output. This shell script may be used to construct the files; it captures many
of the semantics of the cookbook. This can be useful when a project needs to be
distributed, and the recipients do not have cook(1) installed. It can also be
very useful when debugging cookbooks.

-Silent
Do not echo commands before they are executed.

-No_Silent
Echo commands before they are executed. This is the default.

-STar
Emit progress indicators once a second. These progress indicators include

+ Reading the cookbook
- Executing a collect function
* Building the dependency graph
# Walking the dependency graph
@ Writing fingerprint files.

-No_STar
Do not emit progress indicators. This is the default.

-Strip_Dot
Remove leading "./" from filenames before attempting to cook them; applies to all
filenames and all recipes. This is the default.

-No_Strip_Dot
Leave leading "./" on filenames while cooking.

-SymLink-Ingredients
The option asks that, when using a search path, that non-top-level recipe
ingredients get a top-level symlink to the actual file. This is intended for
brain dead tools, like GNU Autoconf, that don't grok search paths.

-No-SymLink-Ingredients
Do not create top level symlinks to ingredients. This is the default.

-Tell_Position
This option may be used to cause the position of commands (filename and line
number) to be printed along with the command just before it is executed (provided
the -No_Silent option is in force).

-No_Tell_Position
This option may be used to suppress printing the position of commands (filename
and line number) along with the command just before it is executed. This is the
default.

-Touch
Update the last-modified times of the target files, rather than execute the
actions bound to recipes. This can be useful if you have made a modification to
a file that you know will make a system of files logically out of date, but has
no significance; for example, adding a comment to a widely used include file.

-No_Touch
Execute the actions bound to recipes, rather than update the last-modified times
of the target files. This is the default.

-TErminal
When listing, also send the output stream to the terminal. This is the default.

-No_TErminal
When listing, do not send the output to the terminal.

-Time_Adjust
This option causes cook to check the last-modified time of the targets of
recipes, and updates them if necessary, to make sure they are consistent with
(younger than) the last-modified times of the ingredients. This results in more
system calls, and can slow things down on some systems. This corresponds to the
time-adjust recipe flag.

-No_Time_Adjust
Do not update the file last-modified times after performing the body of a recipe.
This is the default. This corresponds to the no-time-adjust recipe flag.

-Web
This option may be used to request a HTML web page be printed on the standard
output. This web page may be used to document the file dependencies; it captures
many of the semantics of the cookbook. It can also be very useful when debugging
cookbooks.

name=value
Assign the value to the named variable. The value may contain spaces if you can
convince the shell to pass them through.

All options may be abbreviated; the abbreviation is documented as the upper case letters,
all lower case letters and underscores (_) are optional. You must use consecutive
sequences of optional letters.

All options are case insensitive, you may type them in upper case or lower case or a
combination of both, case is not important.

For example: the arguments "-help", "-HEL" and "-h" are all interpreted to mean the -Help
option. The argument "-hlp" will not be understood, because consecutive optional
characters were not supplied.

Options and other command line arguments may be mixed arbitrarily on the command line.

The GNU long option names are understood. Since all option names for cook are long, this
means ignoring the extra leading '-'. The "--option=value" convention is also
understood.

EXIT STATUS


The cook command will exit with a status of 1 on any error. The cook command will only
exit with a status of 0 if there are no errors.

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