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How do I close an open port from the terminal on the Mac?
I opened port #5955 from a java class to comunicate from a client. How do i close this port after I am done? and also which command can show me if port open or closed?
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Speed comparison with Project Euler: C vs Python vs Erlang vs Haskell
I have taken Problem #12 from Project Euler as a programming exercise and to compare my (surely not optimal) implementations in C, Python, Erlang and Haskell. In order to get some higher execution times, I search for the first triangle number with more than 1000 divisors instead of 500 as stated...
Unable to load config info from /usr/local/ssl/openssl.cnf on Windows
...NSSL_CONF = "${env:ProgramFiles}\OpenSSL\openssl.cnf"
This value differs from previous installation versions (as seen in a previous edit of this post). Also, don't forget to add the openssl binary folder ${env:ProgramFiles}\OpenSSL to your Path.
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How to scp in Python?
...ramiko. It's very easy to use. See the following example:
import paramiko
from scp import SCPClient
def createSSHClient(server, port, user, password):
client = paramiko.SSHClient()
client.load_system_host_keys()
client.set_missing_host_key_policy(paramiko.AutoAddPolicy())
client.co...
Java: Date from unix timestamp
...already had milliseconds, then just new java.util.Date((long)timeStamp);
From the documentation:
Allocates a Date object and
initializes it to represent the
specified number of milliseconds since
the standard base time known as "the
epoch", namely January 1, 1970,
00:00:00 GMT.
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How to generate an openSSL key using a passphrase from the command line?
...ects the encrypted private key on standard input - you can instead read it from a file using -in <file>).
Example of creating a 3072-bit private and public key pair in files, with the private key pair encrypted with password foobar:
openssl genrsa -aes128 -passout pass:foobar -out privkey....
What does it mean that Javascript is a prototype based language?
...es a class, which defines an object. Multiple objects can be instantiated from the same class, so you have code in one place which describes several objects in your program. Classes can then be organized into a hierarchy, furthering code reuse. More general code is stored in a higher-level class,...
How to include external Python code to use in other files?
...want to prefix your Calculate function with the module name then do this:
from Math import Calculate
If you want to import all members of a module then do this:
from Math import *
Edit: Here is a good chapter from Dive Into Python that goes a bit more in depth on this topic.
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What is the pythonic way to detect the last element in a 'for' loop?
...cess_line(line)
# No way of telling if this is the last line!
Apart from that, I don't think there is a generally superior solution as it depends on what you are trying to do. For example, if you are building a string from a list, it's naturally better to use str.join() than using a for loop ...
Squash my last X commits together using Git
...<after-this-commit> is either the SHA1 hash or the relative location from the HEAD of the current branch from which commits are analyzed for the rebase command. For example, if the user wishes to view 5 commits from the current HEAD in the past the command is git rebase -i HEAD~5.
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