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sudo echo “something” >> /etc/privilegedFile doesn't work
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add column to mysql table if it does not exist
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Note that INFORMATION_SCHEMA isn't supported in MySQL prior to 5.0. Nor are stored procedures supported prior to 5.0, so if you need to support MySQL 4.1, this solution isn't good.
One solution used by frameworks that use database migrations is to record in your database a revision num...
Get image data url in JavaScript?
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Getting a JPEG-formatted image doesn't work on older versions (around 3.5) of Firefox, so if you want to support that, you'll need to check the compatibility. If the encoding is not supported, it will default to "image/png".
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How do you make a HTTP request with C++?
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edited Jul 7 at 15:28
gmagno
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answered Jul 10 '09 at 21:...
How to find duplicates in 2 columns not 1
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Miyagi CoderMiyagi Coder
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深入理解 x86/x64 的中断体系 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...是负责安装 BIOS 代码进入系统内存。
jmp far f000:e05b
典型是这条指令就是 0xFFFFFFF0 处的 ROM BIOS 指令，执行后它将跳到 0x000FE05B 处，这条指令的作用很大：
更新 CS.base 使 processor 变成纯正的 real mode
跳转到低端内存...
Detect & Record Audio in Python
...ort array
from struct import pack
import pyaudio
import wave
THRESHOLD = 500
CHUNK_SIZE = 1024
FORMAT = pyaudio.paInt16
RATE = 44100
def is_silent(snd_data):
"Returns 'True' if below the 'silent' threshold"
return max(snd_data) < THRESHOLD
def normalize(snd_data):
"Average the vol...
How to do 3 table JOIN in UPDATE query?
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echo_Meecho_Me
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How can I check if my python object is a number? [duplicate]
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5 Answers
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Delete topic in Kafka 0.8.1.1
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Eric Leschinski
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answered Jun 18 '14 at 14:37
frankfrank
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