Which Directory was my ruby script run from?

[Matthew John]

Hi All,

How do I find out which directory my ruby script was run from?

Thanks Matthew John
p.s Today I'm using Windows

 

[Robert Klemme]

Hi All,

How do I find out which directory my ruby script was run from?

Dir.getwd
Dir.pwd

robert

 

[James Edward Gray II]

Hi All,

How do I find out which directory my ruby script was run from?

Thanks Matthew John
p.s Today I'm using Windows

Try:

File.dirname($PROGRAM_NAME)

James Edward Gray II

 

[Mike Fletcher]

Hi All,

How do I find out which directory my ruby script was run from?

Maybe Dir.getwd?

------------------------------------------------------------- Dir::getwd
Dir.getwd => string
Dir.pwd => string
------------------------------------------------------------------------
Returns the path to the current working directory of this process
as a string.

Dir.chdir("/tmp") #=> 0
Dir.getwd #=> "/tmp"

 

[Jamey Cribbs]

Matthew John wrote:



Maybe Dir.getwd?

------------------------------------------------------------- Dir::getwd
Dir.getwd => string
Dir.pwd => string
------------------------------------------------------------------------
Returns the path to the current working directory of this process
as a string.

Dir.chdir("/tmp") #=> 0
Dir.getwd #=> "/tmp"

I use File.dirname($0).

Jamey Cribbs

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[Matthew John]

I've written a little script to test, and it looks like the second reply
by Mike is the only one that works. The other two provide me with the
location of the file, not the directory where the file was run from.

My script is in c:\sparkdriver\bin and this is set in my path.

When I run the the testfile.rb script from the c:\Documents and Settings
folder I get the following results:-

C:\Documents and Settings>testfile.rb
Physical Location of File c:\sparkdriver\bin

c:/sparkdriver/bin - File.dirname($PROGRAM_NAME)
C:/Documents and Settings - Dir.getwd
c:/sparkdriver/bin - File.dirname($0)

---- testfile.rb

puts "Physical Location of File c:\\sparkdriver\\bin\n\n"

dir = File.dirname($PROGRAM_NAME)
puts dir + ' - File.dirname($PROGRAM_NAME)'

dir = Dir.getwd
puts dir + ' - Dir.getwd'

dir =File.dirname($0)
puts dir + ' - File.dirname($0)'

Thanks for your help.

Matthew John

 

[Gene Tani]

BTW, $0 and $PROGRAM_NAME are aliases for the same variable.

"__FILE__", too, I guess

 

[Mike Fletcher]

"__FILE__", too, I guess

Nope. __FILE__ is the name current source file, which can be different
than $0 in different modules.

freebie:~ 839> ruby aprog.rb
$0: aprog.rb
__FILE__: ./amodule.rb
aprog $0: aprog.rb
aprog __FILE__: aprog.rb
freebie:~ 840> cat aprog.rb
#!/usr/local/bin/ruby
require 'amodule'

f = Foo.new

f.pr_dollar0
f.pr_file

puts "aprog $0: #{$0}"
puts "aprog __FILE__: #{__FILE__}"

exit 0

__END__
freebie:~ 841> cat amodule.rb
class Foo
def pr_file
puts "__FILE__: #{__FILE__}"
end
def pr_dollar0
puts "$0: #{$0}"
end
end