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Cron jobs and random times, within given hours
...
and in /path/to/bashscript:
#!/bin/bash
maxdelay=$((14*60)) # 14 hours from 9am to 11pm, converted to minutes
for ((i=1; i<=20; i++)); do
delay=$(($RANDOM%maxdelay)) # pick an independent random delay for each of the 20 runs
(sleep $((delay*60)); /path/to/phpscript.php) & # backgr...
Why does String.split need pipe delimiter to be escaped?
...escape. Now that I know why it's that way, it will surely help me remember from now on.
– sufinawaz
Nov 3 '14 at 21:10
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How to test if a string is basically an integer in quotes using Ruby
...=~ /\A[-+]?[0-9]+\z/)
end
end
An edited version according to comment from @wich:
class String
def is_i?
/\A[-+]?\d+\z/ === self
end
end
In case you only need to check positive numbers
if !/\A\d+\z/.match(string_to_check)
#Is not a positive number
else
#Is al...
Using C# reflection to call a constructor
... if that's too much of a challenge then you should really really stay away from reflection.
– Jon Skeet
Mar 7 '13 at 6:48
1
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How to sort mongodb with pymongo
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You should use: ASCENDING and DESCENDING from pymongo. :)
– Sn0pY
Oct 30 '18 at 22:30
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Is there a method to generate a UUID with go language
...rectly identify it as version 4. This is done to distinguish random UUIDs from ones generated via other algorithms (e.g. version 1 UUIDs based on your MAC address and time).
share
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improve this an...
Resize image to full width and fixed height with Picasso
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how to resize it without cropping it from any side and also maintaining the aspect
– Rohit Sharma
Nov 22 '18 at 10:54
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OS X Terminal Colors [closed]
...avorite application, iTerm 2.
iTerm 2 lets you load global color schemes from a file. Really easy to experiment and try a bunch of color schemes.
Here's a screenshot of the iTerm 2 window and the color preferences.
Once I added the following to my ~/.profile file iTerm 2 was able to override t...
Postgresql - change the size of a varchar column to lower length
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I was facing the same problem trying to truncate a VARCHAR from 32 to 8 and getting the ERROR: value too long for type character varying(8). I want to stay as close to SQL as possible because I'm using a self-made JPA-like structure that we might have to switch to different DBMS acco...
How to detect orientation change?
...e additional correct code because the compiler will no longer try infer it from your usage. Hence, if you add "@obj" to your rotate() func in your Swift 3.0 solution, the code will compile without the warning.
– Mythlandia
Jul 22 '18 at 6:20
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