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How to merge every two lines into one from the command line?
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awk:
awk 'NR%2{printf "%s ",$0;next;}1' yourFile
note, there is an empty line at the end of output.
sed:
sed 'N;s/\n/ /' yourFile
share
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improve t...
PHP random string generator
...de snippet with the corrections:
function generateRandomString($length = 10) {
$characters = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
$charactersLength = strlen($characters);
$randomString = '';
for ($i = 0; $i < $length; $i++) {
$randomString .= ...
How to add an email attachment from a byte array?
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edited Apr 6 '10 at 10:09
answered Apr 6 '10 at 10:06
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Multiple file extensions in OpenFileDialog
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Why is creating a Thread said to be expensive?
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150
Java thread creation is expensive because there is a fair bit of work involved:
A large block ...
Matplotlib scatterplot; colour as a function of a third variable
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import matplotlib.pyplot as plt
# Generate data...
x = np.random.random(10)
y = np.random.random(10)
# Plot...
plt.scatter(x, y, c=y, s=500)
plt.gray()
plt.show()
Or, if you'd prefer a wider range of colormaps, you can also specify the cmap kwarg to scatter. To use the reversed version of a...
Is there a quick way to delete a file from a Jar / war without having to extract the jar and recreat
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204
zip -d file.jar unwanted_file.txt
jar is just a zip file after all. Definitely much faster th...
What is the difference between Nexus and Maven?
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160
Sonatype Nexus and Apache Maven are two pieces of software that often work together but they do ...
Merge two branch revisions using Subversion
I'd like to merge all the changes that took place between rev 10 & the HEAD rev on http://url-of-branch-a and apply them to http://url-of-branch-b .
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Declaring a default constraint when creating a table
I am creating a new table in Microsoft SQL server 2000 by writing the code instead of using the GUI, I am trying to learn how to do it "the manual way".
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