Hello My friends,
This is my new Thread and i am so newbie about Bash/shell code.
My first exam question is : there is a file (name is also File) and this file has 2 letters and 1 number. And number is in the middle. like this
a
2
c
I have to show only number on screen. And i did like this :
cat file | tail -n1 | head -n2
and i can see on my screen "2"
the next question is (it continues) : I have to SUM this number with shell code
and i created new kate file and name is total and wrote there :
c = cat file | tail -n1 | head -n2
echo $total `expr $c + $c`
but i get "expr :syntax error" ?
How can i sum this number ?
thanks for your helps. Hope so i could explain myself.