z/OS V1R9.0 UNIX System Services Command ... - Christian Grothoff

$asciichars
When set, any dbx operation that displays the value of a character will
interpret the binary representation of the character as ascii.
$asciistrings
When set, any dbx operation that displays the value of a string will interpret
the binary representation of the string as ascii.
$c Condition variables
$catchbp
Catches breakpoints during the execution of the next command.
$charset
Specifies the input and output charset for displaying string data.
$columns
Specifies the number of columns used to display arrays. Currently this is
only defined for FORTRAN.
$commandedit
Enables the command line facility.
$current
Defined as a constant with the value of the focus thread.
$cv_events
When set, dbx notifies the user but does not stop when a condition variable
event is processed. The following trace information is sent to the user for
the different events:
(dbx) cont
.
.
cv initialize, object=0x2e04567
cv wait, object=0x2e04567, mutex=0x2d04567, thid=0x0102030405060708
cv unwait, object=0x2e04567, mutex=0x2d04567, thid=0x0102030405060708
cv destroy, object=0x2e04567
.
.
$dll_loads
Set by default. When set, dbx processes symbolics for dlls as they are
loaded.
$dll_loadstop
Set by default. When set, dbx will attempt to stop the function call that
caused the dll to be loaded. If the dll was loaded due to a variable
reference or an explicit load, dbx will stop at the source line that caused
the dll to be loaded.
$expandunions
Displays values of each part of variant records or unions.
$flprecision
Determines the precision in bytes of floating-point registers when used in
expressions.
$fr
Hexidecimal floating-point register.
$frb
Binary floating-point register
dbx: set
Chapter 2. Shell command descriptions 215