continue

Skip to the next iteration in a for loop

$ for i in 1 2 3; do if [ "$i" -eq 2 ]; then continue; fi; echo "$i"; done

$ while read line; do [[ "$line" == "#"* ]] && continue; echo "$line"; done < [file.txt]

$ for i in 1 2; do for j in a b; do [ "$j" = "a" ] && continue 2; echo "$i$j"; done; done

$ for file in *; do [ -z "$file" ] && continue; process "$file"; done

continue [n]

continue is a shell builtin command that skips the remaining commands in the current iteration of an enclosing for, while, until, or select loop, and continues with the next iteration of that loop.
When called without an argument, continue affects the innermost enclosing loop. When given a numeric argument n, it continues from the nth enclosing loop, counting outward from the innermost. This allows breaking out of multiple nested loops.
The command is essential for controlling loop flow, particularly when certain conditions require skipping processing without terminating the entire loop. Unlike break, which exits the loop entirely, continue simply moves to the next iteration.

n

Number of enclosing loops to skip out of. Default is 1 (innermost loop). Must be a positive integer.

The argument must be greater than or equal to 1. If n is greater than the number of enclosing loops, continue acts on the outermost loop. Using continue outside of a loop context produces an error. The command only affects the immediate loop structure, not function calls.

continue is a fundamental shell control flow statement present since the original Bourne shell in 1979. It follows conventions from earlier programming languages like C. The ability to specify a loop level was added to provide more flexible control in nested loop scenarios.

break(1), for(1), while(1), bash(1)