While ...loop


 
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# 1  
Old 01-07-2013
While ...loop

Code:
#!/usr/bin/ksh

totalInstance=3
c=1
SID=SID
SID_1=BOYISH
SID_2=EAGALE
SID_3=PLUNE

while [ c -le $totalInstance ]
do
    BDUMP_DIR="${SID}_${c}"
    echo "$BDUMP_DIR"

    c=`expr $c + 1`
    echo "$c"
done

having problem printing the value of my var SID_1, SID_2, SID_3

instead the output printed out is just
SID_1
SID_2
SID_3

i need the value assign to SID_1..3 .
# 2  
Old 01-07-2013
c is a variable, you need a $ before it.

Code:
while [ "$c" -le ....
 ...
  c=$((c + 1))
...
done

# 3  
Old 01-07-2013
Hey,

try this,


Code:
..
while [ $c ...
..

Cheers,
RangaSmilie
# 4  
Old 01-07-2013
Quote:
Originally Posted by Scott
c is a variable, you need a $ before it.

Code:
while [ "$c" -le ....
 ...
  c=$((c + 1))
...
done

erm..i made the changes u recomanded still not able to get the value assign to SID_1 , SID_2 , SID_3
# 5  
Old 01-07-2013
Code:
while [ $c -le $totalInstance ]
do
  BDUMP_DIR="${SID}_${c}"
  eval echo "\$$BDUMP_DIR"
  c=$((c + 1))
  echo "$c"
done

This User Gave Thanks to Scott For This Post:
# 6  
Old 01-07-2013
You need either sth corresponding to bash indirection (don't know in ksh - ${!vname}?) or use eval to assign to BDUMP_DIR.
# 7  
Old 01-08-2013
what happen if is:
Code:
BDUMP_DIR=/home/John/admin/"${SID}_${c}"/bdump

seem like

Code:
eval echo "\$$BDUMP_DIR"

doesn't produce /home/john/admin/plune

---------- Post updated at 09:31 PM ---------- Previous update was at 09:15 PM ----------

Quote:
Originally Posted by redologger
what happen if is:
Code:
BDUMP_DIR=/home/John/admin/"${SID}_${c}"/bdump

seem like

Code:
eval echo "\$$BDUMP_DIR"

doesn't produce /home/john/admin/plune

is ok guys figure it out to be:
Code:
BDUMP_DIR=/home/John/admin/"\$${SID}_${c}"/bdump

Smilie

---------- Post updated 01-08-13 at 01:48 AM ---------- Previous update was 01-07-13 at 09:31 PM ----------

but i can't figure out why there is a $ infront when i
Code:
eval echo "\$$BDUMP_DIR"

$/home/john/admin/plune


Last edited by Scrutinizer; 01-08-2013 at 03:11 AM..
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