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How to add leading zeros for for-loop in shell? [duplicate]
...
Use the following syntax:
$ for i in {01..05}; do echo "$i"; done
01
02
03
04
05
Disclaimer: Leading zeros only work in >=bash-4.
If you want to use printf, nothing prevents you from putting its result in a variable for further use:
$ foo=$(printf "%02d" 5)
$ echo "${...
How do you rename a Git tag?
...lon in the push command removes the tag from the remote repository. If you don't do this, Git will create the old tag on your machine when you pull.
Finally, make sure that the other users remove the deleted tag. Please tell them (co-workers) to run the following command:
git pull --prune --tags
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How to make a website secured with https
...hin the company will be using it, but we are planning to host it in public domain, so that the employees can connect to app from various locations. (Till now I have built web apps that are hosted internally only)
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How do I create a comma-separated list from an array in PHP?
...ays a pain having to take off the final comma. Is there an easy PHP way of doing it?
12 Answers
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“Thinking in AngularJS” if I have a jQuery background? [closed]
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1. Don't design your page, and then change it with DOM manipulations
In jQuery, you design a page, and then you make it dynamic. This is because jQuery was designed for augmentation and has grown incredibly from that simple pre...
How do I download a binary file over HTTP?
How do I download and save a binary file over HTTP using Ruby?
9 Answers
9
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How can I do time/hours arithmetic in Google Spreadsheet?
How do I do time/hour arithmetic in a Google spreadsheet?
11 Answers
11
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Rails Observer Alternatives for 4.0
...there:
module MyConcernModule
extend ActiveSupport::Concern
included do
after_save :do_something
end
def do_something
...
end
end
Next, include that in the models you wish to run the after_save in:
class MyModel < ActiveRecord::Base
include MyConcernModule
end
Dependi...
How do you use a variable in a regular expression?
... JavaScript and I'm thinking that using a regex would be most terse way to do it. However, I can't figure out how to pass a variable in to a regex. I can do this already which will replace all the instances of "B" with "A" .
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Why are empty catch blocks a bad idea? [closed]
...nd then continuing execution. Occasionally this may be the right thing to do, but often it's a sign that a developer saw an exception, didn't know what to do about it, and so used an empty catch to silence the problem.
It's the programming equivalent of putting black tape over an engine warning ...