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can i get a substring from a string?

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# 1  
Old 11-05-2001
can i get a substring from a string?
for example, the string a is "abcdefg", can i get a substring "bcd" (from a[1]to a[3]) from string a?

thank you
# 2  
Old 11-05-2001
Not very pretty, but you could do:

echo $string | sed 's/^.//;s/...$//'
# 3  
Old 11-05-2001
You could also do this:

echo $string | cut -c2-4

Smilie
# 4  
Old 11-05-2001
thank you very much.
thanks
# 5  
Old 11-06-2001
Well this thread certainly has me confused. Smilie

The question is in a c programming forum and the phrasing of the question would seem to indicate a c question. Yet some shell based answers seemed to satisfy the OP. Just in case this is a c question, I like to add:
Code:
for(i=0,j=1; j<=3; i++,j++)
     b[i]=a[j];
b[i]=0;

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