On Oct 21, 2006, at 9:52 AM, xavier mas wrote:
Dear all,
Hi Xavier!
I'm trying to rename a bunch of files to the estination names
included in a
prepared files calling the system function "mv" inside a while loop
(that
reads the destination files one by one).
But when doing this, I get an error saying a destiantion operand is
missing in
line calling the system. Doesn't matter if I use double (for Perl
interpretaton) or single quotes (for system interpretation).
If doing same thing on system bash line it works. What could be the
reason for
that behavior? I need, anyway through Perl programm due to the big
ammount of
files I have to rename.
...
cont = 0;
while (<FILE_IN>) {
cont++
I bet the culprit are those barewords, write $cont instead. It is
good to enable strictness and warnings always, they catch lots of
potential bugs like that one.
$file_out = $_;
$file_in = $cont;
system "mv $file_in $file_out";}
Shelling out has always its risks. Here we are assuming names do not
contain any space (which may be the case in your script). For the
same price you can robustely use the builtin rename or the move/mv
subroutines from the standard module File::Copy.
-- fxn
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