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Delete all the queues from RabbitMQ?
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In Rabbit version 3.7.10 you can run below command with root permission:
rabbitmqctl list_queues | awk '{ print $1 }' | xargs -L1 rabbitmqctl delete_queue
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How can I combine two commits into one commit? [duplicate]
...uplicate of this), squashing 'direction' made a big difference and was the root of the entire issue (see the first comment with around 200 upvotes about 'squashing the wrong way') - stackoverflow.com/a/2568581/43453
– PandaWood
Jul 30 '18 at 3:20
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What should every developer know about databases? [closed]
...istent data associated with just one application. Building a database for MySQL, or Access, or SQL Server has become so routine that databases have become almost a routine part of an ordinary application. Sometimes, that initial limited mission gets pushed upward by mission creep, as the real valu...
Why does Math.round(0.49999999999999994) return 1?
...nd%28double%29
4. http://grepcode.com/file/repository.grepcode.com/java/root/jdk/openjdk/7u40-b43/java/lang/Math.java#Math.round%28double%29
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What is the difference between YAML and JSON?
...anchors." Thus it can handle relational information as one might find in a MySQL database.
YAML is more robust about embedding other serialization formats such as JSON or XML within a YAML file.
In practice neither of these last two points will likely matter for things that you or I do, but in t...
How to Test a Concern in Rails
... end
end
# spec/models/master_spec.rb
require 'spec_helper'
require Rails.root.join "spec/concerns/personable_spec.rb"
describe Master do
it_behaves_like "personable"
end
# spec/models/apprentice_spec.rb
require 'spec_helper'
describe Apprentice do
it_behaves_like "personable"
end
The adva...
Have a variable in images path in Sass?
I want to have one variable that contains the root path to all my images in my CSS file. I can't quite figure out if this is possible in pure Sass (the actual web project is not RoR, so can't use asset_pipeline or any of that fancy jazz).
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Docker, mount volumes as readonly
...hanging the folder owner to someone else works. However, chown requires root access, which I would prefer not to expose to an application.
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Spring Security on Wildfly: error while executing the filter chain
...ldfly authentication will work if you change webapplication context to the Root Context:
<server name="default-server" default-host="webapp">
<http-listener name="default" socket-binding="http"/>
<host name="default-host" alias="localhost" default-web-module="sso.war"/>...
Linux上安装dtrace（劝退篇） - 操作系统(内核) - 清泛网 - 专注IT技能提升
...要). 接着执行:
$ make all
$ make install
$ make load (need to be root or have sudo access)
至此大功告成, 有关dtrace的使用之后再总结吧. 希望对大家有所帮助.
附上一个手册: dtrace user guide
后记
折腾了半天, 发现dtrace对linux支持不是很好, 执...