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我有一个 .Rmd 文件并希望使用knitr和获取幻灯片pandoc。运行后:

library(knitr)
opts_chunk$set(message = FALSE)
knit("my_file.Rmd")
pandoc("my_file.md", format="dzslides")

我收到以下错误消息:

Error in system(paste(which, shQuote(names[i])), intern = TRUE, ignore.stderr = TRUE) : 
  cannot popen '/usr/bin/which 'pandoc' 2>/dev/null', probable reason 'Cannot allocate memory'

问题是什么?谢谢!

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