clojure.java.sh:没有这样的文件或目录

问题描述

我已经编写了一个汇编.dot文件的程序，并希望使用Clojure的 sh 发出编译命令.具体来说，我使用以下功能来做到这一点:

I've written a program to assemble .dot files, and want to use Clojure's sh to give a compile command. Specifically, I use the following function to do it:

(defn compile-graphviz
  "Dumps graphviz-string to a file, then compiles it using dot."
  [graphviz-string]
  (do
    (spit "./tree.dot" graphviz-string)
    (sh "dot -Tpng \"/.tree.dot\" -o\"/.tree.png\"")))

但是，当我运行此命令时，第二部分失败，并在REPL上显示以下错误消息:

However, when I run this, the second part fails, giving the following error message at the REPL:

IOException error=2, No such file or directory  java.lang.UNIXProcess.forkAndExec (UNIXProcess.java:-2)

我看过 sh 的文档和示例，但我不明白为什么这行不通.我想念什么?

I've looked at the documentation for sh and examples, and I can't understand why this wouldn't work. What am I missing?

推荐答案

根据文档， sh 使用execve语义:

According to the documentation, sh uses execve semantics:

(sh "dot" "-Tpng" "/.tree.dot" "-o" "/.tree.png")

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