Tag：Slash
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How does latex output backslashes and single line comments
Single backslash Use “\ backslah” to represent “\”, as shown in the following figure: \backslash Double backslash “\ \” is represented by “\ backslash \ backslash”, as shown in the following figure: Single-Line Comments x+1=y\\ Latex blogging skills This work adoptsCC agreement, reprint must indicate the author and the link to this article Hacking
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Illegal character processing in Linux command line
Characters like $, & in linux commands are illegal. What if you only want to display these special characters as general symbols in the command? Reference is required. There are three reference methods in Linux. Enclose in double quotation marks’ ‘, but this is not valid for’ $’. echo “Today is $(date)” Use single quotation […]
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Linux uses the echo command to output content
#Displays a string on standard output echo hello #Line breaks at the end of lines are not output echo -n hello #Interpret characters escaped with backslashes echo -e ‘hello\nworld’ echo -e ‘hostname\nhello’ > 1.sh #View file contents cat 1.sh hostname hello
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Bash: String
\Backslash (escape) Follow closely\The literal amount of characters will be retained and removed when outputting\。 A special case is\newline(backslash + newline character), this combination will be regarded as a long string newline, and will be used when outputting\newline(backslash + newline) remove, ignore. $ echo \a a $ echo \aaa aaa $ echo aaa\ > ssss […]
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Python + ffmpeg video transcoding format
This article is forwarded from:blog.csdn.net/KH_FC/article/detail… crap At present, I’m also learning python, and I’m not very proficient in it. I can use it to write video transcoding. So I wrote such a simple tool after consulting some materials. This tool can be used by myself. There are still many shortcomings when I use it in […]
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How to count the files in the directory under Linux
In this article, we’ll show you several different ways to find the number of files in a Linux directory.Count the number of files in the directoryThe simplest way to count the files in the directory is to use ls to list one file per line, and pass the output to WC through the pipeline character […]
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PHP using move_ uploaded_ The file function always fails to move a file
problem : Recently, in the project forum, because of the need to upload custom images, after doing the front-end processing of uploading well, use move in the background_ uploaded_ File function. When moving a file, it always returns false; : because for this kind of new front-end and back-end functions, we usually build a demo […]
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Uri design principles
The rest API we designed is really nice E? Elegant:http://api.exapmle.com/louvre… Louvre / da Vinci / Mona Lisa Moderate type:http://58.com/bj/ershou/310976 Beijing / second hand channel / post ID Shetter typehttp://api.example.com/68dd0-… I don’t know what the hell This article will share some principles of URI design. Do not add ‘/’ to the end of the URI With […]
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The address of nginx non 80 / 443 port mapping appears source port_ in_ redirect off
Nginx does not use port 80443. It has mapped port 80443 of nginx to port 80443 of external IP By specifying port_ in_ redirect off; Tell nginx not to bring port when redirecting. If it is not configured, the default value is true If the end of the URL is / will not be a […]
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Does MyEclipse use copy qualified name to separate paths with slashes?
MyEclipse uses the copy qualified name function to get the full path of the class separated by. But if you don’t pay attention, you will get the path separated by slashes and slashes. How can you solve this problem? Now let’s take a look at the detailed tutorial. Software name: Official version of MyEclipse v8.5.0 […]
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MySQL learning notes (15): SQL mode
This article is updated on June 29, 2019, using MySQL 5.7 and operating system deepin 15.4. Unlike other databases, MySQL can run in different SQL modes. [email protected]@sql_modeView or set the current SQL mode. Here are some common SQL modes: ANSI: make the syntax and behavior more consistent with standard SQL. It is a non strict […]
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Windows 64 bit for wampserver or phpstudy Tencent cloud free SSL certificate installation
catalog If the article is useful to you, please like it 1. Download certificate Unzip and copy the Apache folder 2. Open httpd.ini configuration file LoadModule ssl_ module modules/mod_ ssl.so Remove the “#” from the comments on this line Include extra/httpd- ssl.conf Remove the “#” from the comments on this line PS: No, […]