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如何从R获取macOS名称(例如catalina、mojave)?

stevec Zxeenu · 技术社区 · 4 年前

Sys.info() operating system and its version 具有

Sys.info()['sysname']
 sysname 
"Darwin"

但是我们如何才能准确地看到macOS呢名称 (例如Catalina、Mojave、Big Sur等)?

1 回复 | 直到 4 年前

stevec Zxeenu 4 年前

R本身也会这样做 utils:::.osVersion() 它(在r4.0.2中)看起来(对于你关心的部分)是什么样子的

       "Darwin" = {
           ver <- readLines("/System/Library/CoreServices/SystemVersion.plist")
           ind <- grep("ProductUserVisibleVersion", ver)
           ver <- ver[ind + 1L]
           ver <- sub(".*<string>", "", ver)
           ver <- sub("</string>$", "", ver)
           ver1 <- strsplit(ver, ".", fixed = TRUE)[[1L]][2L]
           sprintf("%s %s %s",
                   ifelse(as.numeric(ver1) < 12, "OS X", "macOS"),
                   switch(ver1,
                          ## 10.6 is earliest that can be installed
                          "6" = "Snow Leopard",
                          "7" = "Lion",
                          "8" = "Mountain Lion",
                          "9" = "Mavericks",
                          "10" = "Yosemite",
                          "11" = "El Capitan",
                          "12" = "Sierra",
                          "13" = "High Sierra",
                          "14" = "Mojave",
                          "15" = "Catalina",
                          ""), ver)
       },

它在中定义,在中定义 src/library/utils/R/sessionInfo.R ;你可以用另一个函数看到整个函数 switch 其他操作系统的部件。

           if(ver1[1L] == "10")
               sprintf("%s %s %s",
                       ifelse(as.numeric(ver2) < 12, "OS X", "macOS"),
                       switch(ver2,
                              ## 10.6 is earliest that can be installed
                              "6" = "Snow Leopard",
                              "7" = "Lion",
                              "8" = "Mountain Lion",
                              "9" = "Mavericks",
                              "10" = "Yosemite",
                              "11" = "El Capitan",
                              "12" = "Sierra",
                              "13" = "High Sierra",
                              "14" = "Mojave",
                              "15" = "Catalina",
                              "16" = "Big Sur", # probably not 10.16
                              ""),
                       ver)
           else
               sprintf("macOS %s %s",
                       switch(ver2,
                              "0" = "Big Sur",
                              ""),
                       ver)

问题是 . 前几天我试图找到规范的Linux基本发行版名称(比如 debian8 , centos7