Supplement: About Man about see ALSO (see) in code and VIM under common commands

1. when looking up the/etc/issue file, use man issue to find manual in See also appears MOTD (5), Agetty (8), Mingetty (8). And what issue (5) means at the beginning of the document.

Man man is explained after:

1 executable programs or shell commands-->Shell executable program or command
2 System calls (functions provided by the kernel)--kernel Invoke tool or function
3 Library calls (functions within program libraries)--functions and function library calls
4 special files (usually found In/dev)--device file description in/dev
5 File formats and conventions eg/etc/passwd-->file format or configuration file
6 games--> Games
7 miscellaneous (including macro packages and conventions), e.g.
Man (7), Groff (7)--include conventions and agreements, etc.
8 System Administration commands (usually only for root)--Administrator's Commands
9 Kernel routines [Non standard]-->kernel-related paths

As described above, the issue documentation can be found in the MOTD document (message of the day)-->/ETC/MOTD, and Agetty and Mingetty commands.

2. use Vim to re-familiarize yourself with the edit command shortcuts under vim when editing the. bash_history document.

End-eco.

Supplement: About Man about see ALSO (see) in code and VIM under common commands