debug-tools

A place to put some useful scripts to use when debugging on Linux.

Tested in Ubuntu 20.04

ptrace_scope

Permanently sets ptrace_scope.

ptrace_scope examples

Setting ptrace_scope to 0:

./ptrace_scope 0

Setting ptrace_scope to 1:

./ptrace_scope 1

core-dump

Disables enables the creation of crash dumps with the format [workdir]/core.[PROCESS NAME].[PID].[SIGNAL].[TIME SINCE EPOCH]

core-dump examples

Enabling

./core-dump 

Testing

The following one-liner should generate a crash dump in the current folder with the name core.cause_segfault.[PID].[SIGNUMBER].[TIME].

rm -fr cause_segfault cause_segfault.c && echo "int main(){*(int*)0 = 0;}" > cause_segfault.c && cc cause_segfault.c -o cause_segfault && ./cause_segfault ; rm cause_segfault cause_segfault.c

Resetting the configuration (according to Ubuntu 20.04)

./core-dump --reset

mem.sh

Displays the memory used by a process

./mem.sh [PROCESS NAME]