1. display the / etc directory, all ending with .d file or directory
Command parsing:
LS : without any parameters, display the file or directory in the current directory
-d : show only the directory itself, does not display the files in the directory
* : All files or directories
.d * : at .d ending all files or directories
2. Display / etc directory, all .conf end, and with m, n, r, p, at the beginning of the file or directory
Command parsing:
LS : without any parameters, display the file or directory in the current directory
-d : show only the directory itself, does not display the files in the directory
[MNRP] : into the / etc / start of the next, i.e., in m , n- , R & lt , P begin. [] Brackets represent match any single character
* : All files or directories, into the middle of the middle of any character that is
.conf : no meaning, that is, to put the final .conf end