until

Execute consequent-commands as long as test-commands has an exit status which is not zero.

SYNTAX
      until test-commands; do consequent-commands; done

The return status is the exit status of the last command executed in consequent-commands, or zero if none was executed.

Related commands:

case - Conditionally perform a command
for - Expand words, and execute commands
if - Conditionally perform a command
while - Execute commands