Pseudocode:
- Open the output file.
- Use binmode on the output file handle.
- For each input file to concatenate,
- Open the next input file.
- Use binmode on the input file handle.
- While you haven't reached the end of the input file,
- Read from the input file handle
- Write what you read
}
}
An untested sample Perl implementation:
{
# This code must be provided $output and $ext.
local $/ = \4096; # Limit the size of our block.
local *OUT;
open(OUT, "> $output")
or die("Can't create output file: $!");
binmode(OUT);
local $_;
while (glob("*.$ext")) {
local *IN;
open(IN, "< $_")
or die("Can't open input file $_: $!");
binmode(IN);
{
local $_;
print OUT $_ while <IN>;
}
}
}
A simple way of doing it from a DOS prompt, Windows prompt or a batch file (without using Perl):
copy /b *.ext output
A simple way of doing it from a *ix prompt (without using Perl):
cat *.ext > output
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