The script USES df, extracts only the line you want with grep, and then USES awk to extract the fourth column of data, which is the amount of free space.
该脚本使用df仅提取了要进行grep的行，然后使用awk提取数据的第4列，该列是空闲空间的大小。
There's also a Derby script file, derby.build.sql, that you can execute (see the fourth article in this series to create a working Derby database for use with these examples).
还有一个可以执行的derby脚本文件derby . build . sql(要了解如何创建一个工作的derby数据库以与这些示例结合使用，请参阅本系列的第四篇文章)。
The fourth parameter should be the URL of the server-side script/servlet that will handle the Ajax calls.
第四个参数应该为负责处理Ajax 调用的服务器端script/servlet的URL。
The fourth parameter should be the URL of the server-side script/servlet that will handle the Ajax calls.
第四个参数应该为负责处理Ajax 调用的服务器端script/servlet的URL。
应用推荐