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continue [shells]

continue [n]
continue can be used in the loop commandos while, for and until. It causes the loop to skip the part after the continue. n is optional and specifies the deepness of levels of loops that is skipped.
Here's a little demonstration. 
for a in 1 2 3; do
  for b in 1 2 3; do
     for c in 1 2 3; do
       echo a: $a, b: $b, c: $c
       continue $a
       echo "never reached"
     done
  done
done

a: 1, b: 1, c: 1
a: 1, b: 1, c: 2
a: 1, b: 1, c: 3
a: 1, b: 2, c: 1
a: 1, b: 2, c: 2
a: 1, b: 2, c: 3
a: 1, b: 3, c: 1
a: 1, b: 3, c: 2
a: 1, b: 3, c: 3
a: 2, b: 1, c: 1
a: 2, b: 2, c: 1
a: 2, b: 3, c: 1
a: 3, b: 1, c: 1