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What is the difference between save and export in Docker?
... Docker for a couple of days and I already made some images (which was really fun!). Now I want to persist my work and came to the save and export commands, but I don't fully understand them.
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How can I get the current user's username in Bash?
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In some cases, $USER is not set at all. Worse, it is just an environment variable, so it can be overridden by the user: USER=thisisnotmyname bash -c 'echo $USER' # prints thisisnotmyname
– sitaktif
Dec 17 '15 at 13:20
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How do I plot in real-time in a while loop using matplotlib?
...of the code in question (requires at least version Matplotlib 1.1.0 from 2011-11-14):
import numpy as np
import matplotlib.pyplot as plt
plt.axis([0, 10, 0, 1])
for i in range(10):
y = np.random.random()
plt.scatter(i, y)
plt.pause(0.05)
plt.show()
Note some of the changes:
Call...
How to remove jar file from local maven repository which was added with install:install-file?
I use above command to install local jar into maven local repo. Now I have got the dependency from maven repo. I want to remove this from local repo. How to clean it ?
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How to check whether a file is empty or not?
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Achal Dave
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answered Mar 24 '10 at 13:12
ghostdog74ghostdog74
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Print number of keys in Redis
... key. Also Redis may actively evict some expired keys, but not necessarily all of them.
– seppo0010
Aug 24 '15 at 22:23
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Rails and PostgreSQL: Role postgres does not exist
I have installed PostgreSQL on my Mac OS Lion, and am working on a rails app. I use RVM to keep everything separate from my other Rails apps.
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Composer killed while updating
I got a problem, I tried to install a new package to my Laravel 4 project.
But when I run php composer.phar update I get this:
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What and where are the stack and heap?
...set aside as scratch space for a thread of execution. When a function is called, a block is reserved on the top of the stack for local variables and some bookkeeping data. When that function returns, the block becomes unused and can be used the next time a function is called. The stack is always ...
Is it possible to create a remote repo on GitHub from the CLI without opening browser?
...create a repo on GitHub via the command line. As you noted, GitHub doesn't allow shell access, etc., so aside from the GitHub API, the only way to create a repo is through GitHub's web interface.
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