STAPVARS(3stap)                                                                                                  STAPVARS(3stap)



NAME
       stapvars - systemtap variables


DESCRIPTION
       The  following  sections enumerate the public variables provided by standard tapsets installed, (the installation path is
       show in the stappaths (7) manual page).  Each variable is described with a type, and its behavior/restrictions.  The syn-
       tax is the same as printed with the stap option -p2.  Examples:


       example1:long
              Variable "example1" contains an integer.


       example2:string [long]
              Variable "example2" is an array of strings, indexed by integers.


   ARGV
       argc:long
              Contains  the  value of the  $# value: the number of command line arguments passed to the systemtap script.  It is
              initialized with an implicit begin(-1) probe.


       argv:string [long]
              Contains each command line argument as a string.  argv[1] will equal @1 if there was at  least  one  command  line
              argument.  Arguments beyond #32 are not transcribed, and produce a warning message within the begin(-1) probe that
              initializes this array.


   NULL
       NULL:long
              Simply defined as the number 0.


FILES
       More files and their corresponding paths can be found in the stappaths (7) manual page.


SEE ALSO
       stap(1) stappaths(7)



                                                                                                                 STAPVARS(3stap)