Shell Programming and Scripting

I want to know script for

Input file : 123456789
outputfile :
1
2
3
4
5
6
7
8
9
now please how can generalize it
like i want output : 123
456
789

assume the data is in a file called inputfilename, you can use awk:

Code:

#!/bin/ksh
# one parameter: spacing
spacing="$1"
awk -v spc=$spacing '{ for(i=1; i<=length($0); i++) {
					   printf( (i%spc == 0)?"%s\n":"%s", substr($0,i,1))
					 }} END { printf "\n"}'  inputfilename

can it be done using sed and cut somehow .

-----------------------------------------
like to cut the 1st variable cut -c1-1
and then to replace the 1st variable sed '1s/^.//
-------------------------------------------------------
but my problem is I can't generalize it mean
if I set x=1
than
12345
will become
1
2
3
4
5
if i set x=2
12
34
5
and so on

I am poor at understanding awk

where is the to write the output file ??
ya there is input and output file

Are you coding in bash?

no in ksh
but getting >
at the end of the code
now i can do
sed -r 's/.{2}/&\n/g' inputfile
or sed -r 's/.{3}/&\n/g' inputfile
it works but i want to generalize it replacing 2 or 3 with x. which doesn't work

try extra ticks:

Code:

sed -r 's/.{'$x'}/&\n/g' inputfile