[Bash] Boucle while - export variable [Résolu]

lami20j@debian:~$ cat paul.sh
#!/bin/bash

I=0;
while read REF_LINE ;do
  let I++
done < file.txt
echo "I = "$I;


J=-1;
while [ $J -lt 100 ];do
  let J++;
done
echo "J = "$J;
lami20j@debian:~$ cat file.txt
ligne1
ligne2
ligne3
lami20j@debian:~$ sh paul.sh
I = 3
J = 100

#!/bin/bash

I=-1;
cat file.txt | (while read REF_LINE
do
{
   let I++;
}
done
echo "I = "$I;)


J=-1;
while [ $J -lt 100 ]
do
{
   let J++;
}
done
echo "J = "$J;

while read REF_LINE
do
{
   let I++;
}
done
echo "I = "$I;

#!/bin/bash

I=0;
cat file.txt | (while read REF_LINE;do
   let I++
done
echo I = $I)

J=-1;
while [ $J -lt 100 ];do
   let J++
done
echo J = $J

#!/bin/bash

I=0;
exec < file.txt
while read REF_LINE ;do
  let I++
done
echo "I = "$I;


J=-1;
while [ $J -lt 100 ];do
  let J++;
done
echo "J = "$J;