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How to permanently export a variable in Linux?
I am running RHEL6, and I have exported an environment variable like this:
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How can I select rows with most recent timestamp for each key value?
.... I want to select a single row with latest timestamp for each sensor, including some of the other fields.
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Why would introducing useless MOV instructions speed up a tight loop in x86_64 assembly?
Background:
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Does Spring Data JPA have any way to count entites using method name resolving?
Spring Data JPA supports counting entities using specifications. But does it have any way to count entities using method name resolving? Let's say I want a method countByName to count entities with specific name, just like a method findByName to fetch all entities with specific name.
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Get timezone from DateTime
Does the .Net DateTime contain information about time zone where it was created?
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How do I add a ToolTip to a control?
I have some controls that I would like to display a ToolTip for when the mouse is hovering over it. How can I do this? I would like to know how to do this properly in code, but also in the designer (There is a ToolTip component in the toolbox, but I don't quite.. get it).
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sqlite database default time value 'now'
...it possible in a sqlite database to craete a table that has a timestamp column that default to DATETIME('now') ?
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How to set host_key_checking=false in ansible inventory file?
I would like to use ansible-playbook command instead of ' vagrant provision '. However setting host_key_checking=false in the hosts file does not seem to work.
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Adding git branch on the Bash command prompt
I tried adding the git branch I'm currently working on (checked-out) on the bash prompt without success.. ( while keeping my current path which shows the active directory/file intact)
I have a .bashrc file on my home, but I also saw many people mentioning the .profile file..
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Take the content of a list and append it to another list
I am trying to understand if it makes sense to take the content of a list and append it to another list.
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