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涨姿势：全套支付宝系统架构（内部架构图） - 更多技术 - 清泛网 - 专注C/C...
涨姿势：全套支付宝系统架构（内部架构图）近期，支付宝机房故障，不仅引得网友为马云担心，还为自己在支付宝余额宝各种宝的巨款担心。 为了让大家更好的了解支付宝系统的运作，网友...近期，支付宝机房故障，不仅引...
Win7以上操作系统清理系统图标缓存脚本 - 脚本技术 - 清泛IT论坛，有思想、有深度
...m 关闭Windows外壳程序explorer
taskkill /f /im explorer.exe
rem 清理系统图标缓存数据库
attrib -h -s -r "%userprofile%\AppData\Local\IconCache.db"
del /f "%userprofile%\AppData\Local\IconCache.db"
attrib /s /d -h -s -r "%userprofile%\AppData\Local\Microsoft\Wi...
Removing projects in Sublime Text 2 and 3
...y/Application Support/Sublime Text 3/Local/Session.sublime_session
Linux (Ubuntu):
Sublime Text 2
~/.config/sublime-text-2/Settings/Session.sublime_session
Sublime Text 3
~/.config/sublime-text-3/Local/Session.sublime_session
What to expect to see:
You should see something like the following ...
Is there a Unix utility to prepend timestamps to stdin?
...e given answers to the simplest one possible:
unbuffer $COMMAND | ts
On Ubuntu, they come from the expect-dev and moreutils packages.
sudo apt-get install expect-dev moreutils
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开源邮件传输代理软件 -- Postfix 介绍 - 开源 & Github - 清泛网 - 专注C/C++及内核技术
...大的Internet用户，试图影响大多数的Internet上的电子邮件系统，因此它是免费的。
2. 更快：
postfix在性能上大约比sendmail快三倍。一部运行postfix的台式PC每天可以收发上百万封邮件。
3. 兼容性好:
postfix是sendmail兼容的，从...
.bashrc at ssh login
When I ssh into my ubuntu-box running Hardy 8.04, the environment variables in my .bashrc are not set.
4 Answers
...
How to deal with a slow SecureRandom generator?
...e.
Note: If you do cryptography, you need good entropy. Case in point - android PRNG issue reduced the security of Bitcoin wallets.
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Postgresql: password authentication failed for user “postgres”
...
If I remember correctly the user postgres has no DB password set on Ubuntu by default. That means, that you can login to that account only by using the postgres OS user account.
Assuming, that you have root access on the box you can do:
sudo -u postgres psql
If that fails with a database ...
How to Set AllowOverride all
...
In case you are on Ubuntu, edit the file /etc/apache2/apache2.conf (here we have an example of /var/www):
<Directory /var/www/>
Options Indexes FollowSymLinks
AllowOverride None
Require all granted
</Directory&...
ssh: connect to host github.com port 22: Connection timed out
...yself and I got it resolved.
For me I am getting this error on my AWS EC2 UBUNTU instance, what I did to resolve it was to edit the ssh config (or add it if it does not exist).
sudo nano ~/.ssh/config
And I added the following
Host github.com
Hostname ssh.github.com
Port 443
Then, run the co...