You should be aware of two other statements: the break statement and the exit statement.
The break statement can be used to terminate an iteration loop, such as a for, until, or repeat command.
exit statements can be used to exit a shell program. You can optionally use a number after exit. If the current shell program has been called by another shell program, the calling program can check for the code (the $? or $status variable, depending on shell) and make a decision accordingly.
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