Using bash's for command

[clickit]

Tried using bash 3.1's "for" command and it keeps flagging my semicolons:

for (( m=0 ) ; ( $m<=20 ) ; ( m=$m+1 ))
do
...
done
It says it is a syntax error so I put spaces on either side of all of them to no avail.
Can someone help? I just do not see it.

[ghostdog74]

if you just want to go to 20

for i in {0..19}
do
  # do something
done

[burschik]

for (( m=0; $m < 10; m++ )); do echo $m; done

[drl]

Hi.

Minor comment: the remaining "$" can also be eliminated:

for (( m=0; m < 10; m+=2 )); do echo $m; done
0
2
4
6
8

cheers, drl

[piwener]

Hi.

Minor comment: the remaining "$" can also be eliminated:

for (( m=0; m < 10; m+=2 )); do echo $m; done
0
2
4
6
8

cheers, drl

This way is so nice.

I also have another way:

for i in `seq 0 2 9`;
do
  echo $i;
done

[clickit]

Thanks, burschik, you seen my too many parans. How I get my head so wired?? Appreciate all who helped.