Name

a

Synopsis

a [line] command

Sets an action to be done before the line is executed. The following steps are taken:

  • Checks for a breakpoint at this line

  • Prints the line if necessary

  • Performs any actions associated with the line

  • Prompts the user if at a breakpoint or in single-step mode

  • Evaluates the line

For example, the following prints the value of $foo (and DB FOUND) every time line 53 is passed:

a 53 print "DB FOUND $foo
"

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