windows下定期清理日志文件

FOR /F "skip=5 delims=" %%G IN ('dir /b /O-D /A-D') DO del "%%G"

Will delete all files except the 5 newest ones. I couldn't find a one-liner to keep all files newer than 5 days so for that you might have to use some more complicated logic.

/b

Lists only file names without extra info

/O-D

Sorts list by reverse date order.

/A-D

Filters to only show non-directory files

skip=5

skips the 5 first lines (5 newest ones).

and put the command into a schedule