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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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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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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...
Javascript object Vs JSON
I want to understand the basic differences clearly between Javascript object and JSON string.
5 Answers
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When to use cla(), clf() or close() for clearing a plot in matplotlib?
..., go to the end of this comment for relevant links).
So the the following script will produce an empty list:
for i in range(5):
fig = plot_figure()
plt.close(fig)
# This returns a list with all figure numbers available
print(plt.get_fignums())
Whereas this one will produce a list with fi...
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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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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When should I use a trailing slash in my URL?
...erver and only static files like images, html and so on — no server side scripts or whatsoever.
A browser requests /index.htm, it exists and is delivered to the client. Later you have lots of - let's say - DVD movies reviewed and a html page for each of them in the /dvd/ directory. Now someone re...
How to send only one UDP packet with netcat?
... -q1 option on my netcat. Instead I used the -w1 option. Below is the bash script I did to send an udp packet to any host and port:
#!/bin/bash
def_host=localhost
def_port=43211
HOST=${2:-$def_host}
PORT=${3:-$def_port}
echo -n "$1" | nc -4u -w1 $HOST $PORT
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