在Linux中，文件描述符（file descriptor, fd）和FILE指针（也称为文件流指针，FILE pointer）是两种常见的文件操作接口。文件描述符是一个整数，通过系统调用直接操作文件，而FILE指针是通过C标准库函数操作文件。 文件描述符（fd）： 由操作系统分配的一个整数标识 ...

Have you ever wanted to read a file one line at a time in a shell script and found the task to be a lot more trouble than you ever imagined? If you use a “for line ...

Last week’s column looked at how we can read from and write to files by associated the files with user-defined file descriptors. This week, we take this idea a bit further. Closing File Descriptors In ...

Recently I needed to create a script that processed two input files. By processed I mean that the script needed to get a line from one file, then get a line from the second file, and then do something ...