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server certificate verification failed. CAfile: /etc/ssl/certs/ca-certificates.crt CRLfile: none
...
TLDR:
hostname=XXX
port=443
trust_cert_file_location=`curl-config --ca`
sudo bash -c "echo -n | openssl s_client -showcerts -connect $hostname:$port -servername $hostname \
2>/dev/null | sed -ne '/-BEGIN CERTIFICATE-/,/-END...
JavaScript validation for empty input field
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123
<script type="text/javascript">
function validateForm() {
var a = document.f...
How should strace be used?
...rogrammer / user to quickly find out how a program is interacting with the OS. It does this by monitoring system calls and signals.
Uses
Good for when you don't have source code or don't want to be bothered to really go through it.
Also, useful for your own code if you don't feel like opening up GD...
App Inventor 2 低功耗蓝牙(BLE) 硬件接入、数据通信及IO控制 · App Inventor 2 中文网
... 隐私策略和使用条款 技术支持 service@fun123.cn
Python's most efficient way to choose longest string in list?
...the Python documentation itself, you can use max:
>>> mylist = ['123','123456','1234']
>>> print max(mylist, key=len)
123456
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How to remove leading zeros using C#
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This is the code you need:
string strInput = "0001234";
strInput = strInput.TrimStart('0');
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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
...为 real-address mode，关于实模式请详见文章：http://www.mouseos.com/arch/001.html
processor 执行的第一条指针在 0xFFFFFFF0 处，这个地址经过 North Bridge（北桥）和 South ridge（南桥）芯片配合解码，最终会访问到固化的 ROM 块，同时，经过别名...
Determining the last changelist synced to in Perforce
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I recommend the opposite for automatic build systems: you should first get the latest changelist from the server using:
p4 changes -s submitted -m1
then sync to that change and record it in the revision info. The reason is as follows. Alth...
Remove file extension from a file name string
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String.LastIndexOf would work.
string fileName= "abc.123.txt";
int fileExtPos = fileName.LastIndexOf(".");
if (fileExtPos >= 0 )
fileName= fileName.Substring(0, fileExtPos);
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How to get the home directory in Python?
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You want to use os.path.expanduser.
This will ensure it works on all platforms:
from os.path import expanduser
home = expanduser("~")
If you're on Python 3.5+ you can use pathlib.Path.home():
from pathlib import Path
home = str(Path.home...