Question

我想通过cron运行我的脚本。但是，当我尝试执行它时，脚本无法启动。我在做什么错了？

sudo crontab -e：

5 * * * * /home/admin/.nvm/versions/node/v10.16.0/bin/node /home/admin/project/index.js

index.js：

#!/usr/bin/env node

...
var fs = require('fs');

function formatDate(date) {
    var monthNames = [
        "January", "February", "March",
        "April", "May", "June", "July",
        "August", "September", "October",
        "November", "December"
    ];
    var day = date.getDate();
    var monthIndex = date.getMonth();
    var year = date.getFullYear();
    return day + '_' + monthNames[monthIndex] + '_' + year;
}

function formatTime(time) {
    var hours = time.getHours();
    var minutes = time.getMinutes();
    var seconds = time.getSeconds();
    return hours + '_' + minutes + '_' + seconds;
}

var ws = fs.createWriteStream(`./log/test-${formatDate(new Date())}-${formatTime(new Date())}.log`, {
    'flags': 'w',
    'encoding': 'utf8'
});

process.stdout.wr = process.stdout.write;
process.stdout.er = process.stderr.write;

process.stdout.write = function (mes, c) {
    ws.write(mes + '\r\n');
    process.stdout.wr(mes, c);
};

process.stderr.write = function (mes, c) {
    ws.write(mes + '\r\n');
    process.stdout.er(mes, c);
};
...

grep CRON / var / log / syslog：

Jun 17 09:05:01 admin-serv CRON[861]: (admin) CMD (/home/admin/.nvm/versions/node/v10.16.0/bin/node /home/admin/project/index.js)

ps aux | grep index.js

admin 921 0.0 0.0 21320 1016 pts/0 S+ 09:05 0:00 grep --color=auto index.js

自然，当我运行此命令时

/home/admin/.nvm/versions/node/v10.16.0/bin/node /home/admin/project/index.js

通过终端，一切正常。

Answer 1

当从cron执行脚本时，

process.stdout不起作用。如果您打算在没有终端的情况下运行脚本，则应该改用console.log。

Cron不执行Node.js脚本

1 个答案: