condition bp-number Perl-expression
bp-number is a breakpoint number. Perl-expresion is a Perl expression which must evaluate to true before the breakpoint is honored. If perl-expression is absent, any existing condition is removed; i.e., the breakpoint is made unconditional.
condition 5 x > 10 # Breakpoint 5 now has condition x > 10 condition 5 # Remove above condition