User`s guide

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Appendix A: dbx Commands
disable item [, item ... ]
Disables the item(s) listed. The specified breakpoint(s),
trace(s), or conditional command(s) no longer affect
program execution. This command has no effect if the item
you specify is already disabled.
down [num] Moves down the specified number of activation levels in the
stack. The default is one level.
dump Prints information about the variables in the current
procedure.
dump procedure Prints information about the variables in the specified
procedure. The procedure must be active.
dump . Prints information about the variables in all procedures
currently active.
edit [file | procedure]
Edits a file. If you set the dbx variable $editor to the name of
an editor, the edit command invokes that editor on the
source file. If you do not set the dbx variable $editor, dbx
checks whether you have set the environment variable
EDITOR and, if so, invokes that editor. If you do not set
either the dbx variable or the environment variable, dbx
invokes the vi editor. When you exit the editor, you return
to the dbx prompt.
If you supply a filename, edit invokes the editor on that file.
If you supply the name of a procedure, edit invokes the
editor on the file that contains the source for that
procedure. If you do not supply a filename or a procedure
name, edit invokes the editor on the current source file.
edit pid pid
Edits the process ID pid clause.
enable item [, item ... ]
Enables the item(s) specified. This command activates the
specified breakpoint(s), trace(s), or conditional
command(s), reversing the effects of a disable command, so
that they affect program execution.