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Why is this shell not executing?

 
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Top Forums UNIX for Dummies Questions & Answers Why is this shell not executing?
# 1  
Old 04-30-2011
Why is this shell not executing?
%touch nu
%cat nu

who | wc -l


%chmod +x nu
%nu
nu: Command not found
# 2  
Old 04-30-2011
Your PATH is not set to search the command in current folder.

You can run the script by:
Code:
./nu

# 3  
Old 05-01-2011
Good. But how.............?
Thank you, that worked.

How do I write a script in vi and then at the command line use the file name to execute without the modifiers ./?

What path should I use to create a script in so that it will find the command?

How do I set a path to search for a command?
Last edited by Shaun74; 05-01-2011 at 01:50 AM..
# 4  
Old 05-02-2011
Code:
export PATH=$PATH:.

then you can run the script directly without ./
This User Gave Thanks to rdcwayx For This Post:
Shaun74
# 5  
Old 05-03-2011
Thanks a lot. I learned something new.

Very basic, but you have to start somewhere. How is it that you are the only one that responded?
# 6  
Old 05-03-2011
Be sure to understand the implications of having the current dir in the PATH
For security reasons, a lot of folks on purpose do not have the current dir in the PATH. If you must, put it at the end.

If it is at or near the beginning of your PATH, and you inadvertently create a script that is named the same as an existing command, your script will run instead and the results may be confusing when you were expecting different output.

Or if a devious person has access to your directory, he could create a script in your directory that does something devious and name it the same as a common command you would be likely to run like ls or cd. You login and run ls or cd, which executes the local, devious command (since it is found first in the PATH search) using your permission level then calls the real ls or cd. You don't know anything happened (except for maybe a slight delay). It could even delete itself after running. Don't ask me how I know this. bwaa haa haa!
This User Gave Thanks to gary_w For This Post:
Shaun74
 
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