Execution Control

break [file:]function
Set breakpoint at function [in file].
backtrace [n]
Print trace of all frames in stack, or of n frames.
print expr
Print value of expression, expr.
continue count
Continue program execution; ignore this breakpoint next count times if specified.
next count
Execute next statement, stepping over function calls; repeat count times if specified.
nexti count
Next machine instruction rather than source line; repeat count times if specified.
step count
Execute next statement, stepping int function calls; repeat count times if specified.
stepi count
Step by machine instruction rather than source line; repeat count times if specified.
until location
Run until next instruction (or location).
finish
Run until stack frame returns.
return [expr]
Pop selected stack frame without executing [setting return value to expr].
signal num
Resume execution with signal num (none if 0).
jump line
Resume execution at source line line.
jump addr
Resume execution at address addr.
set var= expr
Evaluate expr without displaying it; use for altering program variables.