Setting environment variables of node executable files is supported

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crontab_job_string += "; /usr/local/bin/node " + __dirname + "/bin/crontab-ui-mailer.js " + tab._id + " " + stdout + " " + stderr;

crontab.js第156行，/usr/local/bin/node固定字符串会导致apt-get安装的node所在目录不匹配，建议支持设置环境变量来自定义node所在目录。 如果有时间我将会来提交优化代码。

crontab.js line 156, /usr/local/bin/nodefixed string will cause the directory of the node installed byapt-getto mismatch. It is recommended to support setting environment variables to define the directory of the node. If I have time, I will submit the optimization code.