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split a string into 3 characters

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# 1  
Old 08-28-2008
split a string into 3 characters
Hi,

I have a requirement like this.
String=abcdefghijkl

I need to split this string into a substrign each 3 characters and write output into a file.

Output:
abc
def
ghi
jkl

Can any one please help me how can i acheive this

Thanks
# 2  
Old 08-28-2008
Code:
echo $String | sed 's/.../&\
/g' > outputfile

# 3  
Old 08-30-2008
simply ypu can use..

Quote:
echo "$string"|fold -w 3
# 4  
Old 09-08-2008
Quote:
Originally Posted by Annihilannic
Code:
echo $String | sed 's/.../&\
/g' > outputfile

slight modification to this
Code:
echo $str | sed 's/.\{3\}/&\
/g'

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