无法在cron作业中运行npm

Question

which npm



/Users/rnd/.npm-packages/bin/npm


* * * * *  cd ~/doc | /Users/rnd/.npm-packages/bin/npm test  >/tmp/stdout.log 2>/tmp/stderr.log


output: 

env: node: No such file or directory

如果我在终端中运行完全相同的命令，它会完美运行。我该怎么办？