HTTPS certificate installation

Here is a good news to everyone, my website codingfailure.com supports https. Free certificate provider used Let’s Encrypt. How to get the installation, there is...

man manual content export to file

Usually when the terminal command exports files, we will use >, >>. > : overwrite mode >> : append mode Example: Sometimes, however, export files...

grep show lines before and after

Usually when searching for keywords, we need to look at the keyword context information, all of which use -A, -B and -C parameters. Show num...

awk NR FNR difference

Linux awk command can use variables NR and FNR to process multiple files. NR : ordinal number of the current record, multiple files self-increase FNR...

Efficient meeting

We often have meetings to communicate during the development of the project, so it is very important to have an efficient meeting. Today, let’s discuss...

How to be financially free

Financial freedom can be said to be the dream of all people. What is financial freedom? Financial freedom generally means having enough savings, investments and...

mac php nginx mysql

As a back-end development, you often use a local development environment. Here I install the php + nginx + mysql development environment through the mac...

mac homebrew

As a loyal fan of Linux system, I have used Ubuntu and Centos, apt package management and Yum package management, which are very convenient. After...

AWK tutorial: awk sort uniq

In daily development, we often use awk command to cut and sort log file columns and count them. awk sort uniq count example awk column...

linux grep regex examples

Grep regex matches the search content according to the specified rule pattern, which can help us find the content we need precisely. Syntax: grep -E...