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Martin Hope
rubo77
Asked: 2013-05-14 02:55:53 +0800 CST
  • 356

I would like to run a script from the main ubuntu shell as a different user that has no password.

I have full sudo privileges, so I tried this:

sudo su -c "Your command right here" -s /bin/sh otheruser

Then I have to enter my password, but I am not sure if that script is now really running under that user.

How can I confirm that the script is really running under that user now?

command-line
Martin Hope
grrrbytes
Asked: 2012-05-08 11:01:53 +0800 CST
  • 358

This started to happen immediately after I had rebooted the first time after doing a system upgrade. It first starts with a dialogue that says "System program problem detected". Then when I try to hit 'report problem' not much happens. I am led through a dialogue that always ends up the problem cannot be solved.

I am aware this is not a lot of information, however I'm not sure which information I need to publish and how should I obtain it to debug this problem.

Here's a screenshot! enter image description here

bug-reporting
Martin Hope
moata_u
Asked: 2011-03-08 03:40:28 +0800 CST
  • 357

Is there any way to check if there is an error in executing a command?

Example : 

test1=`sed -i "/:@/c connection.url=jdbc:oracle:thin:@$ip:1521:$dataBase" $search`
valid $test1

function valid () {
  if $test -eq 1; then
    echo "OK"
    else echo "ERROR" 
  fi
}

I already tried do that but it seems it isn't working. I don't how do that.

command-line
Martin Hope
Decio Lira
Asked: 2010-08-14 08:57:18 +0800 CST
  • 355

What are your tips for improving overall system performance on ubuntu? Inspired by this question I realized that some default settings may be rather conservative on Ubuntu and that it's possible to tweak it with little or no risk if you wish to make it faster.

This is not meant to be application specific (e.g. make firefox load pages faster), but system wide.

Preferably 1 tip per answer, with enough detail for people to implement it.

A couple of mine would be:

  • Install Preload (via Software Center or sudo apt-get install preload);
  • Change Swappiness value - "which controls the degree to which the kernel prefers to swap when it tries to free memory";

What are yours?

PS: Since this is not intended to have a unique answer but rather, several useful tips, I'm making this community wiki out-of-the-box.

performance
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