#!/usr/bin/perl -w
use strict;
#This program asks for an input file, output file, a string,
# and a replacement string. It then searches the input file
# for the string and substitutes it with a phrase of the
# user's choice.
#get user input...
#there are many problems with this code...
#Open the file, perform the substitutions, and create the
# new user named file.
open (READFILE, "$infile")
|| die "Can not open input file $infile: $!" ;
open (WRITEFILE, ">$outfile")
|| die "Can not create outfile $outfile: $!;
while (<$infile>) { ### PROBLEM ###
### Should use READFILE, the file handle ###
### instead of the string "$infile" ###
### while (<READFILE>) ###
print WRITEFILE "$_" ;
}
The $! variable can be useful, but it is often not.
This is basically the OS error code text. That does not normally
contain the file name that that was "under question".
If want to "die" or "warn", then I would echo the file name that
didn't work.
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