在此示例中，grep对行进行筛选，并输出其修改日期和名称中带Dec的所有文件。
In this example, grep filters the lines, outputting all files with Dec in their modification dates as well as in their names.
例如，清单1中的目录表明，foo . o对象比相应的foo . c源文件的最后修改日期更新。
For example, the directory in Listing 1 shows that the foo.o object is older than the last modification time of the corresponding foo.c source file.
请记住，比较操作针对于文件名，而不是文件系统的创建或修改日期，所以该脚本可以对头天晚上创建的文件进行操作。
Remember that the comparison works on the filename, not the file system creation or modification date, and so the script is able to work with files that might have been created overnight.
make实用工具检查文件（头文件、源代码、数据文件和目标文件）的修改日期，并编译合适的C源文件。
The make utility checks the modification dates of files—header files, source code, data files, and object files—and builds the C source files that are appropriate.
例如，文件列表可以显示文件名、文件类型、大小和文件的上次修改日期。
For example, a list of files could display the file name, file type, size, and date the file was last modified.
实用工具来重命名文件，修改日期，时间和文件和文件夹的属性。
Utility to rename files, modify date-time and attributes of files and folders.
实用工具来重命名文件，修改日期，时间和文件和文件夹的属性。
Utility to rename files, modify date-time and attributes of files and folders.
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