Category: Gossip
Mac command to view all opened port
Install apache and php for http research
I need a super clean apache and forward all PHP requests to a independent php-cgi process which host by a specific port 1. Install Apache Mac In ubuntu, no need to build apache from source, just “sudo apt-get install apache2” Linux 2. Install PHP Mac Linux if you meet this error “configure: error: re2c 1.0.3 […]
ubuntu , allow root to login mysql without sudo
公關力
X11 is good but slow in starbucks
I am sitting in Starbucks with network speed 15Mbps and try to use X11 forward for Netbeans coding. XMing is very low screen resolution so I changed to x410. The text is super clear now but the bandwidth not enought, so a little bit lagging. You can see xming font is not clear in my […]
道教與IT
呢本書講道教, 其實IT同道教好多相似之處 1. 道教最開頭玩 [ 請雷 ] 同 [ 請聖 ], 因為朝庭有啲嘅做得唔好例如農業搞唔掂, 加上解釋唔到自然現象所以請神幫助. 道教認為自太初(姐係宇宙之初)有一啲叫天寶字符嘅野成形, 道教唔知呢啲圖形符號係乜黎, 只係知道佢有神力可以一用, 所以啲有道行嘅道士張佢寫係張紙到就可以用黎消災解難. 對比起IT, 啲IT人好多時都解釋唔到啲技術係乜, 公司唔掂無效率解決唔到, 班友搞唔掂唯由寫道符(Tender)請神, 但班友又唔神心請神變左請鬼. 呢本書都講如果道士寫符唔淨心就會走火入魔, 請左啲邪鬼上黎. 2. 道教根本係一個無乜哲學嘅宗教, 成單野就係一大群道士係到吹, 而道士同道士之間係無提出過任何質問, 總之你有你講我有我講, 大家唔好踢爆各玩各嘅, 成個宗教就係一個大型嘅俾面派對大家唔好阻住大家揾食. 你睇返而家IT界啲KOL, 個個都係講埋啲你阿媽係女人嘅野, 有時仲要講錯, 佢地係好唔鐘意有人對佢地提出質疑, 那怕個質疑只係一條簡簡單單嘅問題, 佢地都唔會回應而unfriend左你. 我試過問Emil Chan同方保僑係邊一方面嘅專家, 佢地都即刻block Q左我. 呢一點同道教嘅道士非常相似. 3. 皇帝有問題問啲道士, 例如天下係點形成, 運勢有咩走法咁, 啲道士會答到超級high level完全落唔到地嗰隻. 對比係印度同希臘啲哲學家, 使佢地答唔到, 佢地都會嘗試將個問題break down去啲細啲嘅問題去再解釋, 而道教係只會將你指來指去, 一時就太初點點點, 一時就啲鬼神點點點, […]
Good bye IVE 21st July 2023
HKOSCON 2023 – Verilog talk
Photo – 2022
CityU-EE GEF Programme Mentorship Meeting (4 Feb 2023)
點解香港人搞open source project唔掂嘅原因
好認真咁搞左五年open source project，認真程度係出錢又出力，而家總結點解香港人搞open source唔掂，又或者好難掂嘅原因 香港人動手能力極其低下 其實呢一點都唔洗啲咩證明同解釋，香港IT界人技術人仕其本上打份牛工或者為生活做下freelance仲有少少力之外根本就乜力都無。無力嘅原因我唔知，但係估計離唔開根本唔鐘意寫program呢回事。嗰啲阿叔話就有二十年經驗，其實減去為左份糧而工作嘅經驗基本上一年經驗都無。佢地嘅技術主要黎自份牛工嘅隨學隨做，佢地會好自豪咁講「嗰嗰都係咁㗎啦」，佢哋嘅世界自由香港牛工市場，牛場就係佢地生日嘅全部。外個嘅open source developer夢想改變世界嘅時候佢地會用所謂嘅廿年經驗去點頭評足，好似可批判到單咁，好撚猥瑣 香港根本無前輩可以照耀後來者 都唔好話提點下你，以我經驗香港啲阿叔有超過50%會叫你不如唔好搞，原因嘅白痴程度突破天際 : 學界基本上係搞笑 香港學界係唔會復Email，唔好旨意你有技術問題可以問大學，一定唔會復你。香港大學教授嘅動手能力人盡皆知，就連香港嘅大學生都知自己教授唔會做實際野。係香港一個教授一年出12篇理文咁你估到佢地係到做緊乜野，香港學界唔可能堅負起作為一個城市嘅大腦嘅角色，可以咁講對普通市民，學界簡直係腦殘。 無政府支持 創新科技署無一個支援計劃係支持open source，佢地每一個支援計劃都要寫business proposal，佢地最想就係錢，直接拉高到香港GDP，你搞open source如果無即時market佢地係唔會支持你。同理科學園數碼港創科局都係一樣。因為政府零支持，加上滿腦子講商業價值，所以香港無前瞻性嘅民間科學研究，民間全面熄火。係政府嘅角度要做科學研究只會依賴大學同研究院，但兩者係開源嘅研究實力和貢獻都非常底下。 香港無籌款呢樣野 Apache group同GNU group有一大部份經費係黎自籌款而香港係無籌款呢單野，外國嘅企業用open source軟件，大嘅公司會捐錢資助個project，有好多會出埋人一齊改善個software，而香港嘅企業同政府係唔會咁做。香港班客佢地嘅屬性係西客，用都不特止仲要不停投訴，隻手同跛嘅無分別，唔會落手落腳去改良開源軟件，所以開唔開源對佢地黎講無分別。
Very good AI book by examples
Knowledge Management
Never use Baidu Cloud Disk
Simple reaons, upload is fast, download only. few ten KB/s. It looks like Baidu don’t want you to download your file, locking you in forever
Simplest guide to config tomcat to use https with lets encrypt’s free cert
Support you have generate a standalone cert using certbot command, and your cert is in /etc/letsencrypt/live/ . If not, follow this https://www.digitalocean.com/community/tutorials/how-to-use-certbot-standalone-mode-to-retrieve-let-s-encrypt-ssl-certificates-on-ubuntu-16-04 Execute openssl command and remember your password Edit tomcat’s conf/server.xml, you just need one connector to serve 8443, no need other conntector Restart your tomcat, it is done. Below is the virtualhost to […]
玩了14年QQ終於被永久凍結
玩了14年QQ終於被永久凍結了, 原因為了說了一些大陸不想聽的說話
Mac inconsistence free disk space between “System Information” and “Disk Utility”
This command can fix: sudo tmutil thinLocalSnapshots / 10000000000 4
Bash script to create a file with increment bytes
for ((x=0;x<=255;x++)); do a=`echo “obase=16; $x”|bc`;echo -n -e “\x$a”; done
一本由讀computer science嘅人所寫嘅哲學書
我而家總結一下書中所帶出的哲學問題，所有讀computer science嘅人都應該花時間思考一下: 神。人。機械人。三者之關係 機械人的超限作用 人好明顯就是當機械人係奴隸 機械人之自我認同，自我意識 克隆人是機械人? 人是機械人?
Destroyed Yamato
By a level 8 Russian Destroyer
Php example to read all tweets for a specific user
佛教中的鬼與香港人普遍認為的鬼是不同的
雜心論對鬼有比較祥細的描述：1. 鬼有六識：眼意鼻舌身意，中國人普遍認為鬼無肉身，所以無身識2. 六道中各有不同的鬼，人死變人鬼，畜牲死變畜牲鬼，最特別的就是地獄眾生死後變死獄的鬼，由此可見地獄道眾生不是鬼，而餓鬼的眾生也不是鬼，如果不是鬼又怎會死了才變鬼呢3. 鬼經過女性的陰道投胎，而不是飛入個肚到投胎4. 有兩種說法，人道的鬼只能見到人道的鬼，第二種說法是人道的鬼可以見到比人道更低層次(地獄/畜牲/餓鬼)的鬼5. 鬼有時是見不到其它的鬼的，而中國的鬼應該是一定見到其它鬼的6. 鬼入胎後近右手為男，近左手為女，中國的鬼無此說法7. 地獄道的鬼頭向下腳向上而行走，只有天道的鬼才會飛8. 六道中各道的鬼與其道眾生，身型大小相差不遠
Change github account in terminal
$git credential-osxkeychain erasehost=github.comprotocol=https[Press Return] To add your new account you can do the following commands:git config –global user.name “YOUR NAME”git config –global user.email “YOUR EMAIL ADDRESS”
Godaddy cheap VPS之經驗
係Godaddy起左隻最Cheap VPS, $160蚊個月, 得一粒vcore同1GB Ram, 行ubuntu + mysql + apache + wordpress. 正常黎講要兩三個星期restart一次mysql因為out of memory. 行wordpres兩年之後response time趑黎越慢, 有成十秒先load到個page. 裝左W3 Total Cache之後快左好多, 一兩秒就load到, 建議大家一定要裝.
Hyper-V是Type 1的Hypervisor
Hyper-V是Type 1的Hypervisor, 當你安裝完它的時侯, 它會比所在的windows更加底層, Bootloader是會首先加載它然後由它去啓動完先的那一個windows, 所以之後的vm也和那個windows同級, 所以就算那個windows死機了, 其實Hyper-V是沒有死的, 在它上面運行的vm更加不會死.
喜歡黑人架構師Mike Brown的言論
放工去圖書館之Redis
Solved: Error while finding module specification for ‘azure.cli’ (ModuleNotFoundError: No module named ‘azure’)
when you have the follow error when running azure-cli az command: /Users/peter/lib/azure-cli/bin/python: Error while finding module specification for ‘azure.cli’ (ModuleNotFoundError: No module named ‘azure’) Just run directly
I got over 2000 commits to open source projects
My github account is destroyed by a crazy Christian. I got over 2000 commits to open source projects, and 669 commits in last year. These screens are the only prove of my contribution now.
Professor Terence Parr replied
Professor Terence Parr (Antlr creator) replied, this is a major different between foreigner professor and Hong Kong professor. Professor from Hong Kong never reply any technical question from public.
linux elf dependency graph
linux elf dependency graph
Enable peter-swing theme in netbeans
Edit : /Applications/NetBeans/NetBeans 8.0.2.app/Contents/Resources/NetBeans/etc/netbeans.conf Change the line to:
Linux view csv command
alias csv=’column -s, -t’ csv your_file
objdump 2.24 has bug
objdump 2.24 has bug, but this bug is fixed in 2.25. It dump the wrong address for my 32 bits kernel.
ubuntu 12.04 vnc startup script for fallback mode
Fixed ubuntu vnc keymap problem
ubuntu 12.04 vnc keymap has trouble, D become minimize all windows and S become start menu, run these to fix it.
tomcat auto startup script
just save this to /etc/init.d/tomcat and link to /etc/rc5.d/S99tomcat
disable gnome “unable to mount…” dialog
gsettings set org.gnome.desktop.media-handling automount false …and enable it again: gsettings set org.gnome.desktop.media-handling automount true
why i receive zero in my socket
I have two programs, one written in c++, the other is in java. C++ keep sending bytes to java, overtime write out 400KB. Java keep receiving the data using the readBytes function, this function returns an integer which is the number of byte it actually read for the function call. For every send (400kb) in […]