debugging

• invoke the debugger by starting Perl with the -d parameter

  • #!/PERL/PUB/perl -d

• examine or modify variables

• single-step execution

• set breakpoints

• list source code

• set actions to be done before a line is executed

  • a 53 print "DB FOUND $foo\n"

• debugger terminal I/O may act a bit strangely on MPE

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