R中自动修改时间格式

library(lubridate)

## Error in `library()`:
## ! there is no package called 'lubridate'

library(tidyverse)

## Error in `library()`:
## ! there is no package called 'tidyverse'

today() # 标准版

## Error in `today()`:
## ! could not find function "today"

today() %>% format('%B, %d, %Y') # 英文常用格式

## Error in `today() %>% format("%B, %d, %Y")`:
## ! could not find function "%>%"

today() %>% format('%Y年%m月%d日') # 英文常用格式

## Error in `today() %>% format("%Y年%m月%d日")`:
## ! could not find function "%>%"