Hello All,
I have what I believe to be an easy question. Is it possible to open a file that is defined as a variable name?If it is possible, how would I go about it?
I have tried File.open(variable), but I always get an error message stating "Invaild argument - path to file (Errno::EINVAL).
Thanks,
Jeff
ruby-1.9.2-p290 > variable = "foo.txt"
=> "foo.txt"
ruby-1.9.2-p290 > File.open(variable)
=> #<File:foo.txt>
ruby-1.9.2-p290 >
In the above case I know there's a file with that name in the same
directory where I started irb.
Maybe you should look at what your variable actually contains...
On Sat, Sep 3, 2011 at 2:59 PM, Jeffrey Smith <jesmith2095@gmail.com> wrote:
I have tried File.open(variable), but I always get an error message stating "Invaild argument - path to file (Errno::EINVAL).
--
Hassan Schroeder ------------------------ hassan.schroeder@gmail.com
twitter: @hassan
Hello Hassan,
Thanks for the quick response. When I do a puts "path", this is what I get: \\faxgw04\c$\myapp\jobs\Processed\7.7.7\App Fax Service\sd3n4v1.20110902.1024.55435838.JMym.txt". This is the path to the file I want to open.
Jeff
On Sep 3, 2011, at 6:16 PM, Hassan Schroeder wrote:
On Sat, Sep 3, 2011 at 2:59 PM, Jeffrey Smith <jesmith2095@gmail.com> wrote:
I have tried File.open(variable), but I always get an error message stating "Invaild argument - path to file (Errno::EINVAL).
ruby-1.9.2-p290 > variable = "foo.txt"
=> "foo.txt"
ruby-1.9.2-p290 > File.open(variable)
=> #<File:foo.txt>
ruby-1.9.2-p290 >In the above case I know there's a file with that name in the same
directory where I started irb.Maybe you should look at what your variable actually contains...
--
Hassan Schroeder ------------------------ hassan.schroeder@gmail.com
Hassan Schroeder | about.me
twitter: @hassan
? What OS is this? Regardless, try changing all those '\' to '/' first 
On Sat, Sep 3, 2011 at 3:27 PM, Jeffrey Smith <jesmith2095@gmail.com> wrote:
Thanks for the quick response. When I do a puts "path", this is what I get: \\faxgw04\c$\myapp\jobs\Processed\7.7.7\App Fax Service\sd3n4v1.20110902.1024.55435838.JMym.txt". This is the path to the file I want to open.
--
Hassan Schroeder ------------------------ hassan.schroeder@gmail.com
twitter: @hassan
This text is a top post. The convention here is to bottom post
On Sat, Sep 3, 2011 at 5:27 PM, Jeffrey Smith <jesmith2095@gmail.com> wrote:
Hello Hassan,
Thanks for the quick response. When I do a puts "path", this is what I get:
\\faxgw04\c$\myapp\jobs\Processed\7.7.7\App Fax
Service\sd3n4v1.20110902.1024.55435838.JMym.txt". This is the path to the
file I want to open.Jeff
What do these give you? (run from the script, not from irb)
p File.exist?(variable)
p File::SEPARATOR
p File.expand_path(__FILE__)
p Dir.pwd
I changed the slashed and escaped the file path ( I noticed after the fact that my path has spaces), and no change in the error at all.
Jeff
On Sep 3, 2011, at 6:48 PM, Hassan Schroeder wrote:
On Sat, Sep 3, 2011 at 3:27 PM, Jeffrey Smith <jesmith2095@gmail.com> wrote:
Thanks for the quick response. When I do a puts "path", this is what I get: \\faxgw04\c$\myapp\jobs\Processed\7.7.7\App Fax Service\sd3n4v1.20110902.1024.55435838.JMym.txt". This is the path to the file I want to open.
? What OS is this? Regardless, try changing all those '\' to '/' first
--
Hassan Schroeder ------------------------ hassan.schroeder@gmail.com
Hassan Schroeder | about.me
twitter: @hassan
Have you tried 1) opening a file that's in the same directory you've
started IRB in? 2) changing directories to the one with the target file
and starting IRB there?
On Sat, Sep 3, 2011 at 4:26 PM, Jeffrey Smith <jesmith2095@gmail.com> wrote:
I changed the slashed and escaped the file path ( I noticed after the fact that my path has spaces), and no change in the error at all.
Again, what OS? <<
--
Hassan Schroeder ------------------------ hassan.schroeder@gmail.com
twitter: @hassan
The OS is Windows 2003.
I can open the file from the cmd line (not IRB), and when I hardcode the path in File.open(\\\\sdcfaxgw04\\c$\\epic\\jobs\\Processed\\7.7.7\\Epic Print Service\\xxx) it works fine.
I created the variable by combining two other variables, and when I try the File.exists? it fails. If I assign the complete path including file (i.e. \\\\sdcfaxgw04\\c$\\epic\\jobs\\Processed\\7.7.7\\Epic Print Service\\sd3n4v1.20110902.1924.55435838.JMym.epic) it works fine.
Could it be the way I'm creating the variable? This is the process:
ertf = "\\\\sdcfaxgw04\\c$\\epic\\jobs\\Processed\\7.7.7\\Epic Print Service\\"+filevariable
Jeff
On Sep 3, 2011, at 7:39 PM, Hassan Schroeder wrote:
On Sat, Sep 3, 2011 at 4:26 PM, Jeffrey Smith <jesmith2095@gmail.com> wrote:
I changed the slashed and escaped the file path ( I noticed after the fact that my path has spaces), and no change in the error at all.
Again, what OS? <<
Have you tried 1) opening a file that's in the same directory you've
started IRB in? 2) changing directories to the one with the target file
and starting IRB there?--
Hassan Schroeder ------------------------ hassan.schroeder@gmail.com
Hassan Schroeder | about.me
twitter: @hassan
I changed the slashed and escaped the file path ( I noticed after the fact that my path has spaces), and no change in the error at all.
Again, what OS? <<
Have you tried 1) opening a file that's in the same directory you've
started IRB in? 2) changing directories to the one with the target file
and starting IRB there?--
Hassan Schroeder ------------------------ hassan.schroeder@gmail.com
Hassan Schroeder | about.me
twitter: @hassanThe OS is Windows 2003.
I can open the file from the cmd line (not IRB), and when I hardcode the path in File.open(\\\\sdcfaxgw04\\c$\\epic\\jobs\\Processed\\7.7.7\\Epic Print Service\\xxx) it works fine.
This cannot work. You need at least quotes to make that valid Ruby
code. Please show the *exact* code you are using.
I created the variable by combining two other variables, and when I try the File.exists? it fails. If I assign the complete path including file (i.e. \\\\sdcfaxgw04\\c$\\epic\\jobs\\Processed\\7.7.7\\Epic Print Service\\sd3n4v1.20110902.1924.55435838.JMym.epic) it works fine.
Could it be the way I'm creating the variable? This is the process:
ertf = "\\\\sdcfaxgw04\\c$\\epic\\jobs\\Processed\\7.7.7\\Epic Print Service\\"+filevariable
What is in filevariable? Do you happen to read "filevariable" from
stdin? Then this is what happens:
irb(main):001:0> File.open("price.sql").close
=> nil
OK, file is there. Now the test:
irb(main):002:0> filevariable = gets
price.sql
=> "price.sql\n"
irb(main):003:0> File.open(filevariable).close
Errno::ENOENT: No such file or directory - price.sql
from (irb):3:in `initialize'
from (irb):3:in `open'
from (irb):3
from /usr/local/bin/irb19:12:in `<main>'
Note the trailing newline. You can get rid of it by doing
irb(main):004:0> filevariable.chomp!
=> "price.sql"
irb(main):005:0> filevariable
=> "price.sql"
Kind regards
robert
On Sun, Sep 4, 2011 at 2:35 AM, Jeffrey Smith <jesmith2095@gmail.com> wrote:
On Sep 3, 2011, at 7:39 PM, Hassan Schroeder wrote:
On Sat, Sep 3, 2011 at 4:26 PM, Jeffrey Smith <jesmith2095@gmail.com> wrote:
--
remember.guy do |as, often| as.you_can - without end
http://blog.rubybestpractices.com/