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sudo - command usage

 
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# 1  
Old 09-16-2011
sudo - command usage
Hi,

I have few doubts regarding "sudo" command. It acutally allows access to other commands as a different user. It stands for "superuser do".

Now, we execute a command as
Code:
sudo su - oracle

Can you please tell me what does it do actually, thank you.
Last edited by vbe; 09-16-2011 at 08:30 AM..
# 2  
Old 09-16-2011
If you are allowed to run :
Code:
sudo su - oracle

then it runs the command
Code:
su - oracle

with root privilege, so it allow you to switch to oracle user without having to provide the password of oracle user account
This User Gave Thanks to ctsgnb For This Post:
Dev_Dev
# 3  
Old 09-16-2011
I will add the - sign there is so it executes the .profile of the user in order to have his environment... in other words without - you would just "be" oracle from then on but without his environment ( most certainly most admin commands of a DBA would not load etc...)
This User Gave Thanks to vbe For This Post:
Dev_Dev
# 4  
Old 09-16-2011
You may want to check out your sudoers (/etc/sudoers) file. That would specify the rules for sudo on your system.
This User Gave Thanks to ShawnD41 For This Post:
Dev_Dev
# 5  
Old 09-17-2011
Thank you all, it is quite useful.

---------- Post updated at 03:09 AM ---------- Previous update was at 02:58 AM ----------

Hi,

What are all the other commands, which can be executed through 'sudo', please share more details, thank you.
# 6  
Old 09-19-2011
Pretty much any command can be executed using sudo. Just depends on how it was implemented on your system.
# 7  
Old 09-19-2011
Quote:
Originally Posted by Dev_Dev
What are all the other commands, which can be executed through 'sudo', please share more details, thank you.
sudo is configurable. /etc/sudoers determines who can execute what commands with it.
 
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