Strange type mistake?! Post: 302913321

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Top Forums Shell Programming and Scripting Strange type mistake?! Post 302913321 by xraystorm on Friday 15th of August 2014 09:29:43 AM

08-15-2014

Registered User

Strange type mistake?!

Hi,
I want to start MY_PROGRAM in a bash script with additional parameters given in the CONFIGURATION_ARRAY.

Code:

IFS="'"
CONFIGURATION_ARRAY=( '-N 0 -m 0' '-N 0 -m 1'  )
for configuration in ${CONFIGURATION_ARRAY[@]}
do

//DEBUG
N=${configuration%-*} //-N 0
M=-${configuration##*-} //-m 0
a="-N 0"
b="-m 0"
printf "%s \n" $N //-N 0
printf "%s \n" $a //-m 0
if [ $N == $a ]
then
           echo "SAME" //it's not the same - WHY???
fi

if [ $M == $b ]
then
           echo "SAME" //it's the same
fi

Actual execution

Code:

sudo  ./MY_PROGRAM $configuration //I want this to work but: doesn't work
sudo  ./MY_PROGRAM $N $M //doesn't work
sudo  ./MY_PROGRAM $N //doesn't work
sudo  ./MY_PROGRAM $M //works!!! 
sudo  ./MY_PROGRAM $a $b //works!!! but a and b contain the same strings as N and M do.. what the hell?

I have absolutly no idea, I already spent hrs on this... can someone please help me? What's the difference between variable N and variable a? It contains the same and both are strings... but the programm only works with a.

Last edited by rbatte1; 08-15-2014 at 10:51 AM.. Reason: Break up the code and the output

xraystorm

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VTYSH(1)							   Version 0.88 							  VTYSH(1)

NAME

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SYNOPSIS

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DESCBGPTION

       vtysh is a integrated shell for Zebra routing engine.

OPTIONS

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COMMANDS

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FILES

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WARNING

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AUTHOR
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