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What is the purpose of “&&” in a shell command?
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Good in REPL, but for scripts I would prefer set -o errexit for Bash.
– Franklin Yu
Feb 11 '17 at 11:38
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How to change MySQL data directory?
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Great thanks, and to add if you want to completely script this like I did you can use this: sed -i 's|datadir=/var/lib/mysql|datadir=/data/var/lib/mysql|g' /etc/my.cnf
– berimbolo
Apr 3 '19 at 10:56
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Javascript object Vs JSON
I want to understand the basic differences clearly between Javascript object and JSON string.
5 Answers
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Real differences between “java -server” and “java -client”?
...This is useful if you have users who or modules which set JAVA_OPTS or use scripts which change command line options. This will also let you monitor, in real time, heap and permgen space usage along with lots of other stats.
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When is localStorage cleared?
...o do so by the user. User agents should always avoid deleting data while a script that could access that data is running.
So if browsers follow the spec it should persist untill the user removes it on all browsers, I have not found any that have deleted on any off my projects.
A good article to r...
How do I escape a single quote in SQL Server?
...s.
It will be very much helpful while using so many lines of INSERT/UPDATE scripts where column values having single quotes.
SET QUOTED_IDENTIFIER OFF;
PRINT "It's Arul."
SET QUOTED_IDENTIFIER ON;
CONCLUSION
The above mentioned methods are applicable to both AZURE and On Premises .
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Possible reason for NGINX 499 error codes
...here is no respond from nginx. Time outs might happen for busy websites or scripts that need more time for execution. You'll need to find timeout that will work for you. For example extend it to:
timeout client 180s
timeout server 180s
And you will be probably set.
Depending on your se...
PHP Error handling: die() Vs trigger_error() Vs throw Exception
...ch other. The first one is not an error at all, but just a way to stop the script and output some debugging info for you to manually parse. The second one is not an error per se, but will be converted into an error if you don't catch it. The last one is triggering a real error in the PHP engine whic...
How can I define colors as variables in CSS?
...ent syntax, to set the color to blue).
Manipulating a CSS variable in JavaScript/client side
document.body.style.setProperty('--main-color',"#6c0")
Support is in all the modern browsers
Firefox 31+, Chrome 49+, Safari 9.1+, Microsoft Edge 15+ and Opera 36+ ship with native support for CSS varia...
List the queries running on SQL Server
... Activity Monitor.
And last but not least there are community contributed scripts like the Who Is Active by Adam Machanic.
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