#pragma section-numbers 1
<<TableOfContents>>

 * [[bash/invocation/option|Invocation Options]]
 * [[bash/builtin/set|Set Options]]
 * [[bash/builtin/shopt|Shopt Options]]

==== Invocation Option --posix ====
----
[[bash/invocation/option/posix|--posix]]
 * Change the behavior of bash where the default operation differs from the POSIX standard to match the standard (posix mode).
 * See SEE ALSO below for a reference to a document that details how posix mode affects bash's behavior.
 * These options must appear on the command line before the single-character options to be recognized.