Reading writing files in perl

If you have any comments or questions, feel free to post them on the source of this page in GitHub. Source on GitHub. Comment on this post. Gabor can help refactor your old Perl code-base. He runs the Perl Weekly newsletter. Contact Gabor if you'd like to hire his service. Buy his eBooks or if you just would like to support him, do it via Patreon. Open and read from text files slurp mode - reading a file in one step Writing to files with Perl. Collectives on Stack Overflow.

Learn more. Reading and writing to an existing file in perl Ask Question. Asked 9 years, 4 months ago. Active 9 years, 4 months ago. Viewed 1k times. I want to read and write to an existing file using perl. Improve this question. Vijay Vijay Add a comment. Active Oldest Votes. As an example, to insert the line three into your example data, write use strict; use warnings; use Tie::File; tie my file, 'Tie::File', 'myfile.

Improve this answer. In order to write to a file, first you need to open the file for writing as follows:. Notice that if you write to a file that contains content, Perl will truncate its content. The following example demonstrates how to read the content of one file and write it another file. If you want to pass arguments to the program via command-line, just replace the code at line 6 and 7 by the following code:. Like Article. Last Updated : 26 Feb, Opening a File. Opening the file. Reading First line from the file.

Reading First char from the file. Printing one line at a time. Initializing filename. Prints an error and exits if file not found. Opening a file and reading content. Previous Perl File Handling Introduction.