Macaulay2 » Documentation
Packages » Macaulay2Doc » The Macaulay2 language » system facilities

Menu

Input and output:

• printing to the screen
• printing to a file -- print to a file
• reading files
• getting input from the user
• creating and writing files
• saving polynomials and matrices in files
• two dimensional formatting
• file manipulation -- Unix file manipulation functions
• communicating with programs
• using sockets

Loading files:

• notify -- whether to notify the user when a file is loaded
• autoload -- arrange for a function to be loaded automatically
• initialization file
• input -- read Macaulay2 commands and echo
• load -- read Macaulay2 commands
• needs -- read Macaulay2 commands if necessary
• end -- stop loading a file
• loadedFiles
• fileExitHooks -- a list of hooks (functions) to execute when the current file has been loaded

Loading path:

• path -- list of directories to look in
• rootURI
• rootPath
• homeDirectory -- the home directory of the user
• minimizeFilename -- minimize a file name
• relativizeFilename -- relativize a file name
• toAbsolutePath -- the absolute path version of a file name
• searchPath -- see searchPath(List,String) -- search a path for a file

Echoing characters:

• clearEcho -- turn off echoing
• setEcho -- turn on echoing

Dumping and restoring the state of the system:

• top level loop
• restart -- restart Macaulay2
• addEndFunction -- add an ending function

Timing computations:

• Time -- the class of all timing results
• time -- time a computation
• timing -- time a computation
• elapsedTime -- time a computation including time elapsed
• elapsedTiming -- time a computation using time elapsed
• cpuTime -- seconds of cpu time used since Macaulay2 began
• currentTime -- get the current time
• sleep -- sleep for a while
• nanosleep -- sleep for a given number of nanoseconds

Interface to the operating system:

• alarm -- set an alarm
• exec -- execute another program
• exit -- exit the program
• fork -- fork the process
• show -- display various objects in an external viewer
• pager -- display with paging
• getenv -- get value of environment variable
• getWWW -- get a web page
• splitWWW -- separate an http response into header and body
• httpHeaders -- see httpHeaders(String) -- prepend http headers to a string
• processID -- the process identifier
• groupID -- the process group identifier
• setGroupID -- set the process group identifier
• kill -- kill a process
• kill(ZZ) -- kill a process
• quit -- quit the program
• wait -- wait for child process
• limitFiles
• limitProcesses

Variables with information about the state of the current process:

• commandLine -- the command line arguments
• scriptCommandLine -- the command line arguments to be used when running a script
• environment -- the environment variables
• version -- information about this version of the program

Working with databases:

• Database -- the class of all database files
• firstkey -- get the first key
• nextkey -- the next key in a database
• openDatabase -- open a database file
• openDatabaseOut -- open a database file for writing
• reorganize -- reorganize a database file

Dealing with the garbage collector:

• GCstats -- information about the status of the garbage collector
• collectGarbage -- collect the garbage in memory
• registerFinalizer -- register a string that will be displayed when an object is garbage collected

---