Very Computer

by **Nasi** » Tue, 28 Aug 2001 06:51:43

Asslam-0-alaikum
I created a script that uses a while loop and it did it's work ,but
ne thing lef that when I tried to loop it until the there is some
key press(any).is there any way to it,
Second How I create an infinit for loop or in another for just say
that if want to loop from 2 19,then instead of writing
for i in 2 3 4 5 6 7 8 ....19,
I want a shortcut like
for i in [2-19]
but it did not worked
Would there be solution,If any one have
pleaz............................

Nasir Mahmood
Lahore Pakistan

by **Ingo Blechschmid** » Tue, 28 Aug 2001 17:30:13

> Asslam-0-alaikum
> Second How I create an infinit for loop or in another for just say
> that if want to loop from 2 19,then instead of writing
> for i in 2 3 4 5 6 7 8 ....19,
> I want a shortcut like
> for i in [2-19]
> but it did not worked
> Would there be solution,If any one have

Type
for i in `seq 2 19`
That works fine...

bye,
Ingo Blechschmidt

--

Time sharing - the use of many people by the computer.

by **Stephane Chazel** » Tue, 28 Aug 2001 18:03:18

[...]

Quote:>> for i in 2 3 4 5 6 7 8 ....19,
>> I want a shortcut like
>> for i in [2-19]
[...]
> for i in `seq 2 19`
> That works fine...

But seq is present on very few systems

You could do
for i in `yes | sed -ne '2,19!d;=;19q'`

But the common and best way is to use a while loop:

i=2; while [ $i -lte 19 ]; do
...
let 'i = i + 1' # won't work with Bourne sh
# i=`expr $i + 1`
done

Or with ksh93, zsh and recent bashs:

for (( i = 2; i <= 19; i++ ))

--
Stphane

by **Irwan Iskanda** » Tue, 28 Aug 2001 11:20:23

#! /bin/ksh

x=2

while [ $x -le 19 ]
do
echo $x
x=`expr $x + 1`

done

cingkleung

> Asslam-0-alaikum
> I created a script that uses a while loop and it did it's work ,but
> ne thing lef that when I tried to loop it until the there is some
> key press(any).is there any way to it,
> Second How I create an infinit for loop or in another for just say
> that if want to loop from 2 19,then instead of writing
> for i in 2 3 4 5 6 7 8 ....19,
> I want a shortcut like
> for i in [2-19]
> but it did not worked
> Would there be solution,If any one have
> pleaz............................

> Nasir Mahmood
> Lahore Pakistan

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