PLEAC-Perl 教程 - File Access (Perl进阶者极力推荐)

7. File Access

Introduction

Opening a File

Opening Files with Unusual Filenames

Expanding Tildes in Filenames

Making Perl Report Filenames in Errors

Creating Temporary Files

Storing Files Inside Your Program Text

Writing a Filter

Modifying a File in Place with Temporary File

Modifying a File in Place with -i Switch

Modifying a File in Place Without a Temporary File

Locking a File

Flushing Output

Reading from Many Filehandles Without Blocking

Doing Non-Blocking I/O

Determining the Number of Bytes to Read

Storing Filehandles in Variables

Caching Open Output Filehandles

Printing to Many Filehandles Simultaneously

Opening and Closing File Descriptors by Number

Copying Filehandles

Program: netlock

Program: lockarea