By Johan Vromans, Squirrel Consultancy
ISBN-10: 0596000324
ISBN-13: 9780596000325
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Additional info for Programming Perl 5 Quick Reference Guide
Sample text
NUMBER ] Re-executes a command. Default is the previous command. [ PATTERN ] Re-executes the last command that started with PATTERN. [ COMMAND ] Runs COMMAND in a sub-process. H [ -NUMBER ] Displays the last -NUMBER commands. | CMD Runs debugger command CMD through the current pager. || CMD Same, temporarily selects DB::OUT as well. t Toggles trace mode. t EXPR Traces through execution of EXPR. x EXPR Evals EXPR in list context, dumps the result. O [ OPT [=VAL] ] Sets or queries values of debugger options.
31. The perl debugger The Perl symbolic debugger is invoked with ‘perl -d’. h Prints out a long help message. h CMD Prints out help for the command CMD. h h Prints out a concise help message. T Prints a stack trace. s [ EXPR ] Single steps. n [ EXPR ] Single steps around subroutine call. RET Repeats last ‘s’ or ‘n’. r Returns from the current subroutine. c [ LINE ] Continues (until LINE, or another breakpoint, or exit). p EXPRy Prints EXPR. l [ RANGE ] Lists a range of lines. RANGE may be a number, start–end, start+amount, or a subroutine name.
PATTERN? Searches backwards for PATTERN. b [ LINE [ CONDITION ]] Sets breakpoint at LINE, default is the current line. b SUB [ CONDITION ] Sets breakpoint at the named subroutine. d [ LINE ] Deletes breakpoint at the given line. D Deletes all breakpoints. L Lists lines that have breakpoints or actions. a [ LINE ] COMMAND Sets an action for line. A Deletes all line actions. < COMMAND Sets an action to be executed before every debugger prompt. > COMMAND Sets an action to be executed after every debugger prompt.
Programming Perl 5 Quick Reference Guide by Johan Vromans, Squirrel Consultancy
by Edward
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