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Git command to display HEAD commit id?
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462
Use the command:
git rev-parse HEAD
For the short version:
git rev-parse --short HEAD
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Mapping many-to-many association table with extra column(s)
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Niks
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answered Feb 26 '11 at 13:51
JB NizetJB Nizet...
How can I make a weak protocol reference in 'pure' Swift (without @objc)
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answered Jun 8 '14 at 8:35
flainezflainez
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Volatile vs Static in Java
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stivlostivlo
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Styling input buttons for iPad and iPhone
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edited Apr 29 '14 at 20:47
answered Mar 27 '11 at 22:10
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Provide an image for WhatsApp link sharing
...erty="og:title" content="short title of your website/webpage" />
Step 4: og:url
Full link to the current webpage address
<meta property="og:url" content="https://www.example.com/webpage/" />
Step 5: og:description
Maximum 65 characters
<meta property="og:description" content="descrip...
Does JSON syntax allow duplicate keys in an object?
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edited Feb 17 '14 at 16:10
answered Feb 17 '14 at 15:29
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9个常用iptables配置实例 - 更多技术 - 清泛网 - 专注C/C++及内核技术
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以上命令设置将由x.x.x.x ip发往eth0网口的tcp包丢弃。
4.配置服务项
利用iptables，我们可以对日常用到的服务项进行安全管理，比如设定只能通过指定网段、由指定网口通过SSH连接本机：
iptables -A INPUT -i eth0 -p tcp -s 192.168.100...
Remove leading comma from a string
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In this specific case (there is always a single character at the start you want to remove) you'l...