Screen Size (Debugging with GDB)
Next: Output Styling, Previous: Command History, Up: Controlling GDB [Contents][Index]
22.4 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 see one more page of output, q to discard the remaining output, or c to continue without paging for the rest of the current command. 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 overflow 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
set height unlimited
show height
set width cpl
set width unlimited
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 either unlimited
or 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 unlimited
’ or ‘set width 0
’ to prevent GDB from wrapping its output.
set pagination on
set pagination off
Turn the output pagination on or off; the default is on. Turning pagination off is the alternative to set height unlimited
. Note that running GDB with the --batch
option (see -batch) also automatically disables pagination.
show pagination
Show the current pagination mode.
Next: Output Styling, Previous: Command History, Up: Controlling GDB [Contents][Index]