dbXtra and dbxtra

curses interface commands

The commands in this section are all effective through the curses interface version (dbxtra) and, where indicated through dbXtra.

forward/backward

forward [n]
backward [n]
Scroll the source window forward and backward n lines (the default is one window). This command is also available through dbXtra.

keys

keys [ on | off ]
Toggle keyboard translation functionality of dbxtra. If neither on nor off is specified, on is assumed.

NOTE: Keyboard translations are never attempted when the keyboard input is meant for the program being debugged.

more [ on | off ]
Toggle pagination of output to the interaction window. If neither on nor off is specified, on is assumed. Note that only the output from the current command is paginated. This means that a page break only occurs if the output from a command exceeds the number of lines in the Interaction window.

screen

screen [ on | off ]
The screen command Change between screen mode and line mode. If neither on nor off is specified, on is assumed. The screen command can ``clear up'' or redraw the screen if the screen has become contaminated with unexpected output.

NOTE: The screen command does not work if the -s option has been used on the command line when dbxtra is invoked.

sh and !

sh shell command
! shell command
Pass a command line to the shell for execution. The SHELL environment variable determines which shell is used. The character ``!'' can be used instead of sh.

source

source filename
Read and execute dbxtra commands from a named file. Each line of the named file is read and interpreted by dbxtra as if it were entered from the standard input stream. When all the lines have been read, commands are again read from the standard input stream. Any input to the program being debugged is always read from the standard input stream.

undisplay

undisplay
undisplay number
undisplay [expression [, expression ...]]
The first form of the command removes all the expressions associated with the last line in the display window.

The second form of the command removes all the expressions associated with a specified number line of the display window. If the line does not exist, an error message is printed.

If the third form is used, the specified expression is removed from the first line in the display window in which the expression appears.

version

This command simply prints version information about dbxtra.