转：EOF结果输入到文件

 参考:

https://juejin.cn/s/shell%20eof%20%E8%BE%93%E5%87%BA%E5%88%B0%E6%96%87%E4%BB%B6

#输入到文件

cat << EOF > output.txt This is the first line of the output file.

EOF

#输入追加到文件

cat << EOF >> output.txt This is the first line of the output file.

EOF