This chapter introduces basic O&M knowledge from the aspects of text processing, system monitoring, logging, FTP, email monitoring, and WeChat monitoring.
In daily O&M work, it is generally inseparable from text, such as log analysis, encoding conversion, ETL processing, etc. This section starts from the practical programming knowledge such as coding principles, file manipulation, reading and writing configuration files, and parsing XML, hoping to provide readers with practical methods when dealing with text problems.
When we write programs to process text, we inevitably encounter a variety of encoding problems, and if we don't know much about the encoding and decoding process, it will be very difficult to encounter such problems. This subsection starts from the principle of encoding and decoding, combined with python 3 ** example step by step to unveil the veil of text encoding, the principle of encoding and decoding is the same, learning to encode and decode, it is also very helpful to learn Xi other programming languages.
First of all, we need to understand that computers only process binary data, and if we want to process text, we need to convert the text into binary data, and then the computer will process it.
Converting text to binary data is encoding, and converting binary data to text is decoding. Encoding and decoding are carried out according to certain rules, and this rule is the character set.
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