New to Bash

VauxhallVXR · 05-30-2009, 04:57 PM

Hey guys, new to the forum, a whole week fresh to bash.

What I'm trying to accomplish is not necessarily efficient, but humor me.

function Recursion {

if [ $v != $p ]; do

echo RUNNING
sleep 3
else
echo NOT RUNNING
sleep 3
break
fi

}

So my logic on the if condition does work, but what I basically need is a way to recurse that function until it hits the else statement and breaks.

I've tried a while loop, it will get an infinite semi-often.

Any help is appreciated, thanks much!

unSpawn · 05-30-2009, 05:17 PM

How about an 'until' loop?

GazL · 05-30-2009, 05:47 PM

I don't think a recursive routine is the best choice for this, a normal iterative loop would probably be a much better choice, but if you absolutely must do it recursively, then something like this is how you'd go about it.

The following example assumes the idea is to keep recursing until something is NOT RUNNING ( when v = p )

Code:

function Recursion {

#  a command that changes one or both of $v or $p is required here
#  otherwise it won't work.

if [ $v != $p ] ; then
  echo RUNNING
  sleep 3
  Recursion
else
  echo NOT RUNNING
fi

return 0

}