xterm報錯如下：
Attaching to process 9636
Could not attach to process.? If your uid matches the uid of the target
process, check the setting of /proc/sys/kernel/yama/ptrace_scope, or try
again as the root user.? For more details, see /etc/sysctl.d/10-ptrace.conf
ptrace: Operation not permitted.
解決方案：
打開文件：?/etc/sysctl.d/10-ptrace.conf
修改：kernel.yama.ptrace_scope = 1 改為0
接著：sudo service procps restart
完成泛豪！
參考：https://askubuntu.com/questions/41629/after-upgrade-gdb-wont-attach-to-process
