perl 读写文件

读文件

use strict;
use warnings;

sub open_display_file
{
  # the filename should be passed in as a parameter
  my $filename = shift;
  # open file to the handle <FILE>
  open(FILE,$filename) || die "Could not read from $filename,program halting.";
  
  # read the first line,and chomp off the newline
  #chomp(my $firstline = <FILE>);
  
  my $firstline = <FILE>;
  
  print $firstline;
  # read other into array
  my @other = <FILE>;
  print @other;
  close FILE;  
}

# a test to show how to call my function
&open_display_file('C:UsersenqrrsbDesktopNewfolderNew foldertest.txt');

写文件

use strict;
use warnings;
sub open_write_file
{
  # the filename should be passed in as a parameter
  my $filename = $_[0];
  # open file to the handle <FILE>
  open(FILE,">>",$filename) || die "Could not write to $filename,program halting.";
  
  print $filename."n";

  print FILE ($_[1]."n");
  # read other into array

  close FILE;  
}
 &open_write_file('C:UsersenqrrsbDesktopNewfoldertest.txt',"rrsb");