shell中单引号怎么转义

Question

const exec = require('child_process').exec;
          exec('cat /dev/urandom |od -x|tr -d ' '|head -n 1', (error, stdout, stderr) => {
            if (error) {
              console.error(`exec error: ${error}`);
              return;
            }
            console.log(`stdout: ${stdout}`);
            console.log(`stderr: ${stderr}`);
          });

上面的shell命令中单引号怎么转义？加反斜杠不行

Answer 1

换双引号？
exec("cat /dev/urandom |od -x|tr -d ' '|head -n 1", (error, stdout, stderr) => {

Answer 2

const exec = require('child_process').exec;

      exec('cat /dev/urandom |od -x|tr -d “ ”|head -n 1', (error, stdout, stderr) => {
        if (error) {
          console.error(`exec error: ${error}`);
          return;
        }
        console.log(`stdout: ${stdout}`);
        console.log(`stderr: ${stderr}`);
      });