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RedHat 9 (Linux i386) - man page for info (redhat section n)

info(n) 			      Tcl Built-In Commands				  info(n)

_________________________________________________________________________________________________

NAME
       info - Return information about the state of the Tcl interpreter

SYNOPSIS
       info option ?arg arg ...?
_________________________________________________________________

DESCRIPTION
       This  command  provides	information  about various internals of the Tcl interpreter.  The
       legal option's (which may be abbreviated) are:

       info args procname
	      Returns a list containing the names of the  arguments  to  procedure  procname,  in
	      order.  Procname must be the name of a Tcl command procedure.

       info body procname
	      Returns the body of procedure procname.  Procname must be the name of a Tcl command
	      procedure.

       info cmdcount
	      Returns a count of the total number of commands that  have  been	invoked  in  this
	      interpreter.

       info commands ?pattern?
	      If  pattern isn't specified, returns a list of names of all the Tcl commands in the
	      current namespace, including both the built-in commands written in C and	the  com-
	      mand  procedures	defined  using	the  proc command.  If pattern is specified, only
	      those names matching pattern are returned.  Matching is determined using	the  same
	      rules as for string match.  pattern can be a qualified name like Foo::print*.  That
	      is, it may specify a particular namespace using a sequence of namespace names sepa-
	      rated  by ::s, and may have pattern matching special characters at the end to spec-
	      ify a set of commands in that namespace.	If  pattern  is  a  qualified  name,  the
	      resulting  list of command names has each one qualified with the name of the speci-
	      fied namespace.

       info complete command
	      Returns 1 if command is a complete Tcl command in the sense of having  no  unclosed
	      quotes,  braces,	brackets or array element names, If the command doesn't appear to
	      be complete then 0 is returned.  This command is typically  used	in  line-oriented
	      input environments to allow users to type in commands that span multiple lines;  if
	      the command isn't complete, the script can delay	evaluating  it	until  additional
	      lines have been typed to complete the command.

       info default procname arg varname
	      Procname must be the name of a Tcl command procedure and arg must be the name of an
	      argument to that procedure.  If arg doesn't have a default value then  the  command
	      returns  0.   Otherwise it returns 1 and places the default value of arg into vari-
	      able varname.

       info exists varName
	      Returns 1 if the variable named varName exists in the current context (either as	a
	      global  or  local  variable) and has been defined by being given a value, returns 0
	      otherwise.

       info globals ?pattern?
	      If pattern isn't specified, returns a list of all the  names  of	currently-defined
	      global variables.  Global variables are variables in the global namespace.  If pat-
	      tern is specified, only those names matching pattern  are  returned.   Matching  is
	      determined using the same rules as for string match.

       info hostname
	      Returns the name of the computer on which this invocation is being executed.

       info level ?number?
	      If number is not specified, this command returns a number giving the stack level of
	      the invoking procedure, or 0 if the command is invoked at top-level.  If number  is
	      specified,  then	the result is a list consisting of the name and arguments for the
	      procedure call at level number on the stack.  If number is positive then it selects
	      a  particular stack level (1 refers to the top-most active procedure, 2 to the pro-
	      cedure it called, and so on); otherwise it gives a level relative  to  the  current
	      level  (0  refers  to the current procedure, -1 to its caller, and so on).  See the
	      uplevel command for more information on what stack levels mean.

       info library
	      Returns the name of the library directory in which standard Tcl scripts are stored.
	      This  is	actually the value of the tcl_library variable and may be changed by set-
	      ting tcl_library.  See the tclvars manual entry for more information.

       info loaded ?interp?
	      Returns a list describing all of the packages that have  been  loaded  into  interp
	      with  the load command.  Each list element is a sub-list with two elements consist-
	      ing of the name of the file from which the package was loaded and the name  of  the
	      package.	For statically-loaded packages the file name will be an empty string.  If
	      interp is omitted then information is returned  for  all	packages  loaded  in  any
	      interpreter  in  the  process.   To  get a list of just the packages in the current
	      interpreter, specify an empty string for the interp argument.

       info locals ?pattern?
	      If pattern isn't specified, returns a list of all the  names  of	currently-defined
	      local  variables,  including arguments to the current procedure, if any.	Variables
	      defined with the global and upvar commands will not be  returned.   If  pattern  is
	      specified,  only those names matching pattern are returned.  Matching is determined
	      using the same rules as for string match.

       info nameofexecutable
	      Returns the full path name of the  binary  file  from  which  the  application  was
	      invoked.	If Tcl was unable to identify the file, then an empty string is returned.

       info patchlevel
	      Returns  the  value  of  the global variable tcl_patchLevel; see the tclvars manual
	      entry for more information.

       info procs ?pattern?
	      If pattern isn't specified, returns a list of all the names of Tcl  command  proce-
	      dures  in  the  current  namespace.   If pattern is specified, only those procedure
	      names in the current namespace matching pattern are returned.  Matching  is  deter-
	      mined using the same rules as for string match.

       info script
	      If  a  Tcl  script  file	is  currently  being  evaluated  (i.e. there is a call to
	      Tcl_EvalFile active or there is an active invocation of the source  command),  then
	      this command returns the name of the innermost file being processed.  Otherwise the
	      command returns an empty string.

       info sharedlibextension
	      Returns the extension used on this platform  for	the  names  of	files  containing
	      shared libraries (for example, .so under Solaris).  If shared libraries aren't sup-
	      ported on this platform then an empty string is returned.

       info tclversion
	      Returns the value of the global variable tcl_version; see the tclvars manual  entry
	      for more information.

       info vars ?pattern?
	      If  pattern  isn't  specified, returns a list of all the names of currently-visible
	      variables.  This includes locals and  currently-visible  globals.   If  pattern  is
	      specified,  only those names matching pattern are returned.  Matching is determined
	      using the same rules as for string match.  pattern can be  a  qualified  name  like
	      Foo::option*.   That  is, it may specify a particular namespace using a sequence of
	      namespace names separated by ::s, and may have pattern matching special  characters
	      at the end to specify a set of variables in that namespace.  If pattern is a quali-
	      fied name, the resulting list of variable names has each matching  namespace  vari-
	      able qualified with the name of its namespace.

KEYWORDS
       command, information, interpreter, level, namespace, procedure, variable

Tcl					       7.5					  info(n)


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