Linux shell perception
Everything in Linux is a file, everything is based on command calls
For commands, receive data to process, receive data in:
Input redirection, access to data via keyboard or file;
inline input redirection;
Data generated by other commands is passed through pipe symbols
Data generated:
output redirection
Output to other commands via pipe symbols
Shell is good at automatic management operations in Linux systems, text processing; for complex networks and other applications, there is nothing to play, and it needs to rely on general programming languages such as Python.
