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How can I check if an ip is in a network in Python?
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This article shows you can do it with socket and struct modules without too much extra effort. I added a little to the article as follows:
import socket,struct
def makeMask(n):
"return a mask of n bits as a long integer"
return (2L<<n-1) - 1
def dotted...
How to permanently add a private key with ssh-add on Ubuntu? [closed]
...ate one. It does not need root rights, so simply:
nano ~/.ssh/config
...and enter the lines above as per your requirements.
For this to work the file needs to have chmod 600. You can use the command chmod 600 ~/.ssh/config.
If you want all users on the computer to use the key put these lines in...
Use C++ with Cocoa Instead of Objective-C?
I would like to write applications that use C++ and the Cocoa frameworks because Apple is not making Carbon 64-bit capable. C++ seems to be pretty vanilla in its implementation on Linux and Windows but on Mac OS X it seems like additional Apple specific pieces of code are required (like an Obj-C wra...
What is the fastest way to send 100,000 HTTP requests in Python?
... file which has 100,000 URL's. I need to send an HTTP request to each URL and print the status code. I am using Python 2.6, and so far looked at the many confusing ways Python implements threading/concurrency. I have even looked at the python concurrence library, but cannot figure out how to wri...
Open URL under cursor in Vim with browser
...rom tpope's tweet today
Press gx. You can customize the browser. On Gnome and Mac OS X it's already use gnome-open/open. Generally you can set g:netrw_browsex_viewer to anything you want.
Original answer:
Don't remember where I get this function. There is a bug with hash (#) in the url, but the...
Python concatenate text files
...each file by f = open(...) , read line by line by calling f.readline() , and write each line into that new file. It doesn't seem very "elegant" to me, especially the part where I have to read//write line by line.
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How can I reverse the order of lines in a file?
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BSD tail:
tail -r myfile.txt
Reference: FreeBSD, NetBSD, OpenBSD and OS X manual pages.
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Why is ArrayDeque better than LinkedList
I am trying to to understand why Java's ArrayDeque is better than Java's LinkedList as they both implement Deque interface.
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Change multiple files
The following command is correctly changing the contents of 2 files.
9 Answers
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How do you echo a 4-digit Unicode character in Bash?
I'd like to add the Unicode skull and crossbones to my shell prompt (specifically the 'SKULL AND CROSSBONES' (U+2620)), but I can't figure out the magic incantation to make echo spit it, or any other, 4-digit Unicode character. Two-digit one's are easy. For example, echo -e "\x55", .
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