如何在Finder中顯示系統隱藏檔案

在檔案選取時，要是沒看到系統隱藏檔案，只要按一次下列的快速鍵即可
Cmd + Shift + . (dot)

No module named "Crypto"

解決方法就是使用新版本的pycrypt ==> pycryptodome 替代
pip uninstall crypto pycryptodome
pip install pycryptodome

今天嘗試在我的Mac上安裝canon EOS utility 發現每次點了安裝後就沒反應，看了半天也不知道原因，後來查了一下，發現似乎是他在偵測系統語系上有點問題，因為我的語系預設使用英文，但我下載的是從台灣下載的，於是把預設語系轉到中文後，重開機在測試一下，果然一切就正常了

Security testing in DevOps

Before we continue to talk about security testing in nowadays, you must aware
traditional security can't fit in DevOps.  Because the  major traditional security control
rely on "Separation of Duty", it is conflict with DevOps "take full responsibility".
Security must Change or Die in DevOps.

Emerging patterns for security in a DevOps world

Traditional Security	DevSecOps
Embrace secrecy	Create Feedback Loops
Just Pass Audit!	Compliance adds Value
Enforce Stability	Create Chaos
Build a wall	Zero Trust Network
Slow Validation	Fast and Non-blocking
Certainly Testing	Adversity Testing
Test when Done	Shift Left
Process Driven	The Paved Road

C10k 問題：只是面對單一server 需要面對1萬個client k的問題

https://medium.com/@chijianqiang/程序员怎么会不知道-c10k-问题呢-d024cb7880f3

http://inspiregate.com/internet/host-setting/434-unix-c10k-problem-and-libevent-introduction-to-libraries.html

How to know if your driver was loaded on Mac

Failed to launch Splunk with error "Validating databases (splunkd validatedb) failed with code '1'."

Recently I moved my previous Splunk db from my old laptop to the new one.  There is an error "Validating databases (splunkd validatedb) failed with code '1’.”” When I tried to launch the Splunk.  After did some googling, I found it was caused by file locked.  The solution is to append the following configuration option to  $SPLUNK_HOME/etc/splunk-launch.conf:

#########################

OPTIMISTIC_ABOUT_FILE_LOCKING = 1