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Cron jobs and random times, within given hours
...ath/to/bashscript
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....
PostgreSQL: How to change PostgreSQL user password?
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1498
For password less login:
sudo -u user_name psql db_name
To reset the password if you have f...
How do I step out of a loop with Ruby Pry?
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417
To exit Pry unconditionally, type
exit-program
Edit from @Nick's comment: Also works:
!!!
...
What framework for MVVM should I use? [closed]
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194
It really depends on what you are trying to achieve, and how much infrastructure you want in pla...
How to run functions in parallel?
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answered Aug 26 '11 at 15:48
NPENPE
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OS X Terminal Colors [closed]
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LuckyMalakaLuckyMalaka
9,64144 gold badges3131 silver badges5353 bronze badges
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What's the best practice for putting multiple projects in a git repository? [closed]
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204
While most people will tell you to just use multiple repositories, I feel it's worth mentioning ...
How does database indexing work? [closed]
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3614
Why is it needed?
When data is stored on disk-based storage devices, it is stored as blocks of ...
How can I override the OnBeforeUnload dialog and replace it with my own?
... bind syntax.
$(window).bind('beforeunload', function() {} );
Edit 09/04/2018: custom messages in onbeforeunload dialogs are deprecated since chrome-51 (cf: release note)
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How do I use Assert to verify that an exception has been thrown?
...
– Ruben Bartelink
Jun 25 '09 at 10:48
29
This attribute gets the job done and is a built-in feat...