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How to check if running as root in a bash script
I'm writing a script that requires root level permissions, and I want to make it so that if the script is not run as root, it simply echoes "Please run as root." and exits.
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How to update attributes without validation
I've got a model with its validations, and I found out that I can't update an attribute without validating the object before.
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How can you encode a string to Base64 in JavaScript?
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You can use btoa() and atob() to convert to and from base64 encoding.
There appears to be some confusion in the comments regarding what these functions accept/return, so…
btoa() accepts a “string” where each character ...
`Apache` `localhost/~username/` not working
UPDATE : The following answer will also work for El Capitan.
7 Answers
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Test if a variable is set in bash when using “set -o nounset”
The following code exits with a unbound variable error. How to fix this, while still using the set -o nounset option?
6 A...
Converting a view to Bitmap without displaying it in Android?
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Removing all empty elements from a hash / YAML?
How would I go about removing all empty elements (empty list items) from a nested Hash or YAML file?
20 Answers
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How do I check if a string is unicode or ascii?
What do I have to do in Python to figure out which encoding a string has?
11 Answers
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Efficient way to remove keys with empty strings from a dict
I have a dict and would like to remove all the keys for which there are empty value strings.
17 Answers
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Remove ALL white spaces from text
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You have to tell replace() to repeat the regex:
.replace(/ /g,'')
The g character means to repeat the search through the entire string. Read about this, and other RegEx modifiers available in JavaScript here.
If you want t...