Gdb print to file instead of stdout

Question

I am running gdb and want to examine one of those unfortunate god objects. It takes many pages (and I have a 24\" monitor turned sideways!) to see the whole thing. For eas

Answer 1

I had a backtrace that was so long (over 100k lines) that holding down the enter key was taking too long. I found a solution to that:

Andreas Schneider's bt command writes a backtrace to file without any user interaction – just prefix your command with bt .

Here, I've turned it into a script:

#!/usr/bin/env bash
ex=(
    -ex "run"
    -ex "set logging overwrite on" 
    -ex "set logging file gdb.bt" 
    -ex "set logging on" 
    -ex "set pagination off"
    -ex "handle SIG33 pass nostop noprint"
    -ex "echo backtrace:\n"
    -ex "backtrace full"
    -ex "echo \n\nregisters:\n"
    -ex "info registers"
    -ex "echo \n\ncurrent instructions:\n"
    -ex "x/16i \$pc"
    -ex "echo \n\nthreads backtrace:\n"
    -ex "thread apply all backtrace"
    -ex "set logging off"
    -ex "quit"
)
echo 0 | gdb -batch-silent "${ex[@]}" --args "$@"