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base
   └──────install
   └──────setup
              └───myfile

Suppose this is a part of my directory structure in Unix. Is there any difference between these two:

1)

base/setup$ myfile

2)

base/install$ ../setup/myfile

I was trying to install something, and the second gave me some library dependency errors. I thought that these two methods are the same. Why is not that so?

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The best way to realise this, I think, is to write full paths: base/setup/1.sh > base/setup/myfile base/install/1.sh > base/setup/myfile – netme Jul 30 '10 at 9:46
    
@netme: here ">" is not the redirection operator, I meant "base/setup>" as a command prompt. – Lazer Jul 30 '10 at 10:33
1  
It would be better to include error messages or specific unexpected behavior in your question. "Did not work" provides no useful information. You may prefer ">" in your prompt, but when you show it to other people change it to "$" in order to reduce confusion. – Dennis Williamson Jul 30 '10 at 14:17
1  
"Did not work"? Which means what exactly? – Lawrence Velázquez Jul 30 '10 at 16:08
1  
@Lawrence Velázquez: got some library dependency errors. – Lazer Jul 30 '10 at 19:13
up vote 6 down vote accepted

base/setup/myfile and base/install/../setup/myfile are the same file. The only explanation I can think of is that base/setup/myfile is referencing a file with a path relative to your current working directory (e.g: run ./modules/pre-setup) - in which case it may make a difference where you are when you run the script.

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it may not have worked as myfile could be trying to call or use things in current directory expecting to be located in the base/setup directory but you are in the base/install directory.

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