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package mn | |
import java.nio.ByteBuffer | |
import java.nio.channels.SocketChannel | |
import java.security.cert.Certificate | |
import java.security.cert.CertificateException | |
import java.security.cert.X509Certificate | |
import javax.net.ssl.SSLContext | |
import javax.net.ssl.SSLEngine |
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# Bash best practices and style-guide | |
Just simple methods to keep the code clean. | |
Inspired by [progrium/bashstyle](https://github.com/progrium/bashstyle) and [Kfir Lavi post](http://www.kfirlavi.com/blog/2012/11/14/defensive-bash-programming/). | |
## Quick big rules | |
* All code goes in a function | |
* Always double quote variables |
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// check version | |
node -v || node --version | |
// list locally installed versions of node | |
nvm ls | |
// list remove available versions of node | |
nvm ls-remote | |
// install specific version of node |
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Latency Comparison Numbers (~2012) | |
---------------------------------- | |
L1 cache reference 0.5 ns | |
Branch mispredict 5 ns | |
L2 cache reference 7 ns 14x L1 cache | |
Mutex lock/unlock 25 ns | |
Main memory reference 100 ns 20x L2 cache, 200x L1 cache | |
Compress 1K bytes with Zippy 3,000 ns 3 us | |
Send 1K bytes over 1 Gbps network 10,000 ns 10 us | |
Read 4K randomly from SSD* 150,000 ns 150 us ~1GB/sec SSD |