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Running a cron every 30 seconds
...ormatted to ensure it's easy to keep them synchronised.
Both cron jobs actually run every minute but the latter one will wait half a minute before executing the "meat" of the job, /path/to/executable.
For other (non-cron-based) options, see the other answers here, particularly the ones mentioning fc...
How do I run a shell script without using “sh” or “bash” commands?
...le:
#!/bin/bash
And make your file executable (chmod +x script.sh).
Finally, modify your path to add the directory where your script is located:
export PATH=$PATH:/appropriate/directory
(typically, you want $HOME/bin for storing your own scripts)
...
How do I move a single folder from one Subversion repository to another repository?
...n repository named "project". I've come to the conclusion that it should really be kept under a separate Subversion repository named "project_docs".
...
The quest for the Excel custom function tooltip
...ication.MacroOptions ( VBA6 ) ( VBA7 ), but this information does not actually appear as a tooltip, so it does not solve my problem.
...
Relatively position an element without it taking up space in document flow
... creating a zero-width, zero-height, relatively positioned element, essentially solely for the purpose of creating a reference point for position, and an absolutely positioned element within that:
<div style="position: relative; width: 0; height: 0">
<div style="position: absolute; lef...
How to use shared memory with Linux in C
... you'd rather use the old-style tools.
The mmap() function can be used to allocate memory buffers with highly customizable parameters to control access and permissions, and to back them with file-system storage if necessary.
The following function creates an in-memory buffer that a process can sha...
How do I stop a web page from scrolling to the top when a link is clicked that triggers JavaScript?
...rring.
There are two ways to do this.
Option 1: event.preventDefault()
Call the .preventDefault() method of the event object passed to your handler. If you're using jQuery to bind your handlers, that event will be an instance of jQuery.Event and it will be the jQuery version of .preventDefault()....
Heroku/devise - Missing host to link to! Please provide :host parameter or set default_url_options[:
...n't have the sendgrid addon and my smtp hasn't configured. Many thanks for all your backup!
– benoitr
Nov 7 '10 at 16:13
1
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Hibernate openSession() vs getCurrentSession()
....) The author suggests the use of filter. In his filter code, he doesn't call openSession() or close(). He only calls getCurrentSession(). I guess he sets current_session_context to thread. Now I think I understand getCurrentSession(). However, I don't know when should I use openSession().
...
What is the point of a private pure virtual function?
...an be overridden in the derived classes. Methods of derived classes can't call virtual functions from the base class, but they can provide their own implementation for them. According to Herb Sutter, having public non-virtual interface in the base class and a private implementation that can be custo...