Re: Hashes or arrays in the command line

The code you posted will try to execute:

cp /home/wbill/lazarus/file1  file2 .
[download]

You probably want something like:

#! /usr/bin/perl
use strict;
use warnings;

my @FILES = ('file1',' file2');
my $path = "/home/wbill/lazarus";

foreach my $this_file ( @FILES ) {
  `cp $path/$this_file .`;
}
[download]

What the foreach does is take every item in the array @FILES and places it in the variable $this_file - which is then used in the backticks

More likely though you should consider using a module such as File::Copy rather than use backticks - it makes the code less platform dependent.

--tidiness is the memory loss of environmental mnemonics

Comment on Re: Hashes or arrays in the command line Select or Download Code

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Re: Re: Hashes or arrays in the command line by EvdB (Deacon) on Nov 20, 2003 at 18:29 UTC
You probably also want to change `my @FILES = ('file1',' file2');` [download] to: `my @FILES = ('file1', 'file2');` [download] note the removal of the space in front of file2. --`tidiness is the memory loss of environmental mnemonics`	[reply] [d/l] [select]
Re: Re: Hashes or arrays in the command line by tux242 (Acolyte) on Nov 20, 2003 at 18:47 UTC
Ok I goofed the file is static like /etc/passwd and I am taking it from a backup sub directory and the server is the variable that changes not the file itself, so it should be like: #! /usr/bin/perl use strict; use warnings; my @SERVERS = ('sneezy','sleepy','dopey','grumpy'); my $path = "/home/backup/"; foreach my $this_server ( @SERVERS ) { `cp $path/$this_server/etc/passwd .`; } [download] Does this lokk right??	[reply] [d/l]
Re: Re: Re: Hashes or arrays in the command line by EvdB (Deacon) on Nov 20, 2003 at 19:02 UTC
It looks fine. If you want to do a sanity check try doing this: `foreach my $this_server ( @SERVERS ) { my $command = "cp $path/$this_server/etc/passwd ."; warn "Will execute '$command'\n"; # system ($command); # uncomment when ready. }` [download] --`tidiness is the memory loss of environmental mnemonics`	[reply] [d/l] [select]