?old.packages
说:
old.packages表示后面有(合适的)的包
版本,而update.packages为
下载并安装此类软件包。
它返回:
NULL或每个包一行的矩阵,
行名称、包名称和列名“package”,
“LibPath”、“Installed”(版本)、“Built”(版本
根据)、“ReposVer”和“Repository”构建。
现在在我的系统上:
Package LibPath Installed Built ReposVer
admisc "admisc" "/usr/local/lib/R/site-library" "0.31" "4.3.0" "0.32"
clock "clock" "/usr/local/lib/R/site-library" "0.6.1" "4.3.0" "0.7.0"
markdown "markdown" "/usr/local/lib/R/site-library" "1.6" "4.4.0" "1.7"
rticles "rticles" "/usr/local/lib/R/site-library" "0.24" "4.3.0" "0.25"
MASS "MASS" "/usr/local/lib/R/library" "7.3-59" "4.4.0" "7.3-60"
Repository
admisc "https://cloud.r-project.org/src/contrib"
clock "https://cloud.r-project.org/src/contrib"
markdown "https://cloud.r-project.org/src/contrib"
rticles "https://cloud.r-project.org/src/contrib"
MASS "https://cloud.r-project.org/src/contrib"
(我以为我记得这件事的存在:我记得
apropos("package")
找到它。)