detach

#!/bin/bash

line=`pidof hl2_linux`
arr=($line)
inst=$1
if [ $# == 0 ]; then 
	inst=0
fi

if [ ${#arr[@]} == 0 ]; then
	echo tf2 isn\'t running!
	exit
fi

if [ $inst -gt ${#arr[@]} ] || [ $inst == ${#arr[@]} ]; then
	echo wrong index!
	exit
fi

echo Running instances: ${arr[@]}
echo Detaching from ${arr[$1]}

if grep -q $(realpath bin/libcathook.so) /proc/${arr[$1]}/maps; then
  gdb -n -q -batch \
    -ex "attach  ${arr[$1]}" \
    -ex "set \$dlopen = (void*(*)(char*, int)) dlopen" \
    -ex "set \$dlclose = (int(*)(void*)) dlclose" \
    -ex "set \$library = \$dlopen(\"$(realpath libcathook.so)\", 6)" \
    -ex "print \$library" \
    -ex "call \$dlclose(\$library)" \
    -ex "call \$dlclose(\$library)" \
    -ex "detach" \
    -ex "quit"
  echo "Detached"
else
	echo "not found!"
fi