There are 2 pieces of code here, and the value in $1
is the name of a file which contains 3 lines of text.
Now, I have a problem. In the first piece of the code, I can't get the "right" value out of the loop, but in the second piece of the code, I can get the right result. I don't know why.
How can I make the first piece of the code get the right result?
#!/bin/bash
count=0
cat "$1" | while read line
do
count=$[ $count + 1 ]
done
echo "$count line(s) in all."
#-----------------------------------------
count2=0
for var in a b c
do
count2=$[ $count2 + 1 ]
done
echo "$count2 line(s) in all."
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