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Linux command to list all available commands and aliases
Is there a Linux command that will list all available commands and aliases for this terminal session?
20 Answers
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Why do people say there is modulo bias when using a random number generator?
I have seen this question asked a lot but never seen a true concrete answer to it. So I am going to post one here which will hopefully help people understand why exactly there is "modulo bias" when using a random number generator, like rand() in C++.
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How do I perform HTML decoding/encoding using Python/Django?
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Given the Django use case, there are two answers to this. Here is its django.utils.html.escape function, for reference:
def escape(html):
"""Returns the given HTML with ampersands, quotes and carets encoded."""
return mark_safe(forc...
What does “Changes not staged for commit” mean
I thought if you want to track the files you should git add [files you want to track]
8 Answers
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How can I upgrade specific packages using pip and a requirements file?
I'm using pip with a requirements file, in a virtualenv, for my Django projects. I'm trying to upgrade some packages, notably Django itself, and I'm getting an error about source code conflicts:
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psql: FATAL: role “postgres” does not exist
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NOTE: If you installed postgres using homebrew, see the comment from @user3402754 below.
Note that the error message does NOT talk about a missing database, it talks about a missing role. Later in the login process it might also stumb...
Show compose SMS view in Android
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You can use the following code:
startActivity(new Intent(Intent.ACTION_VIEW, Uri.parse("sms:"
+ phoneNumber)));
Make sure you set phoneNumber to the phone number that you want to send the message to
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iOS (iPhone, iPad, iPodTouch) view real-time console log terminal
...s there a way to view the real-time console log to view NSLog and other debug messages in a real-time manner, such as adb logcat?
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Use PHP to create, edit and delete crontab jobs?
Is it possible to use PHP to create, edit and delete crontab jobs?
12 Answers
12
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How to find out line-endings in a text file?
I'm trying to use something in bash to show me the line endings in a file printed rather than interpreted. The file is a dump from SSIS/SQL Server being read in by a Linux machine for processing.
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