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Run cron job only if it isn't already running
So I'm trying to set up a cron job as a sort of watchdog for a daemon that I've created. If the daemon errors out and fails, I want the cron job to periodically restart it... I'm not sure how possible this is, but I read through a couple of cron tutorials and couldn't find anything that would do wha...
Origin null is not allowed by Access-Control-Allow-Origin
I have made a small xslt file to create an html output called weather.xsl with code as follows:
7 Answers
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How to remove unreferenced blobs from my git repo
...and without further ado, may I present to you this useful command, "git-gc-all", guaranteed to remove all your git garbage until they might come up extra config variables:
git -c gc.reflogExpire=0 -c gc.reflogExpireUnreachable=0 -c gc.rerereresolved=0 -c gc.rerereunresolved=0 -c gc.pruneExpire=now ...
Efficient method to generate UUID String in JAVA (UUID.randomUUID().toString() without the dashes)
...y. There's an API I'm working with (high profile, well known) that doesn't allow dashes in its UUID. You have to strip them.
– Michael Gaines
Oct 28 '15 at 3:28
20
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Find and restore a deleted file in a Git repository
... of '~1': git checkout <deleting-commit>~1 -- <file-path> ~X allows you to specify X commits before the specified commit, so ~1 is the commit before, ~2 is two commits before, etc
– Nils Luxton
Sep 10 '12 at 15:07
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How to check if a service is running on Android?
...equires starting the service and I think the best flexible solution should allow you to check whether a service is running without starting it.
– Tom
Apr 4 '12 at 16:23
18
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Convert seconds to Hour:Minute:Second
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here you go
function format_time($t,$f=':') // t = seconds, f = separator
{
return sprintf("%02d%s%02d%s%02d", floor($t/3600), $f, ($t/60)%60, $f, $t%60);
}
echo format_time(685); // 00:11:25
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Measure and Benchmark Time for Ruby Methods
...justments to the system clock, so it's a best practice to use Process.clock_gettime(Process::CLOCK_MONOTONIC) instead. But for rough calculations this doesn't matter. blog.dnsimple.com/2018/03/elapsed-time-with-ruby-the-right-way
– Patrick Brinich-Langlois
Feb ...
How to serialize an Object into a list of URL query parameters?
...aroth! I only accepted @patrick's answer above over yours (they are essentially the same) because he was first, I believe. I'm very grateful for your response.
– bobsoap
Jul 4 '11 at 1:06
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reformat in vim for a nice column layout
...ion for this.
Locate to the longest word and place cursor after it.
Remove all the extra whitespace using dw and vertical movement.
Example of this technique demonstrated below:
I don't find myself needing to align things often enough to install another plugin, so this was my preferred way of a...