Interpret a text file

Shell Programming and Scripting
1

hi

I have a text file abc.txt as below

a = 0
b = 1
c = 3

i want to interpret this file i.e. if number corresponding to 'a' is 0 i want to run a script script.bash .

How do do that?

2 
while read a b c
do
  if [ "$a" = a ] && [ "$c" = 0 ]
  then
     script.bash
  fi
done < abc.txt
3

thanks a lot

i still have another problem in getting exactly what i want

this is how i get the file abc.txt

tail -3 file1.txt| awk '{print $5 " "  "="  " "  $NF}' > abc.txt

so when i try

while read a b c
do
if [ "$c" = 0 ] 
then 
#### do something
fi
done <abc.txt

it attaches '\r' with $c in file abc.txt i.e. 0 becomes '0\r' and so on
thus the comparison fails.

---------- Post updated at 02:41 PM ---------- Previous update was at 02:39 PM ----------

above problem occurs only when i generate abc.txt as shown above.

If i type the contents of abc.txt by myself it works fine

please advise

4

Remove the carriage returns:

tail -3 file1.txt |
  awk '{ gsub( "\r", "", $NF)
         print $5 " "  "="  " "  $NF}' > abc.txt
5

it helped...thanks a lot