Debugging with GDB Manual (5900-1473; WDB 6.2; January 2011)

show history, show history filename,
show history save, show history size,
show history expansion
These commands display the state of the GDB
history parameters. show history by itself
displays all four states.
show commands Display the last ten commands in the command
history.
show commands n Print ten commands centered on command number
n.
show commands + Print ten commands just after the commands last
printed.
17.4 Setting the GDB Screen Size
Certain commands to GDB may produce large amounts of information output to the
screen. To help you read all of it, GDB pauses and asks you for input at the end of each
page of output. Type RET when you want to continue the output, or q to discard the
remaining output. Also, the screen width setting determines when to wrap lines of output.
Depending on what is being printed, GDB tries to break the line at a readable place,
rather than simply letting it over flow onto the following line.
Normally GDB knows the size of the screen from the terminal driver software. For example,
on Unix, GDB uses the termcap data base together with the value of the TERM environment
variable and the stty rows and stty cols settings. If this is not correct, you can override
it with the set height and set width commands:
set height lpp, show height se,
set width cpl, show width
These set commands specify a screen height of lpp
lines and a screen width of cpl characters. The
associated show commands display the current
settings.
If you specify a height of zero lines, GDB does not
pause during output no matter how long the output is.
This is useful if output is to a file or to an editor buffer.
Likewise, you can specify set width 0 to prevent
GDB from wrapping its output.
set pagination on/off, show
pagination
Turn the output pagination on or off; the default is on.
You can also turn off pagination to set height 0.
17.5 Supported Number Formats
You can always enter numbers in octal, decimal, or hexadecimal in GDB by the usual
conventions: octal numbers begin with `0', decimal numbers end with `.', and
hexadecimal numbers begin with `0x'. Numbers that begin with none of these are, by
default, entered in base 10; likewise, the default display for numbers|when no particular
format is specified| is base 10. You can change the default base for both input and
output with the set radix command.
17.4 Setting the GDB Screen Size 285