如何使用perl从命令行读取配置文件（自动化）

Question

I am new to Perl and need help with this.

I want to read a config file and see if the first 10 lines of the file contents starts with # and have or not have some particular string to do some automation in Perl.

I was able to open the file using:

 $obj->cmd("path");
 $a = ->obj(cat "/path/.config");

I don't know if we can save this to variable or is there any way I can copy it to the text file and search it.

Also how do I edit this file like adding or removing file content.

Thank you

Answer 1

To open a file for reading use:

open(my $fh, "<", "/path/.config") or die "Can't open < .config: $!";

To open a file for writing

open(my $fh, ">", "/path/.config") or die "Can't open > .config: $!";

the content of the file is then assigned to $fh