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| author | Craig Jennings <c@cjennings.net> | 2024-04-07 13:41:34 -0500 |
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| committer | Craig Jennings <c@cjennings.net> | 2024-04-07 13:41:34 -0500 |
| commit | 754bbf7a25a8dda49b5d08ef0d0443bbf5af0e36 (patch) | |
| tree | f1190704f78f04a2b0b4c977d20fe96a828377f1 /devdocs/bash/special-builtins.html | |
new repository
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| -rw-r--r-- | devdocs/bash/special-builtins.html | 13 |
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diff --git a/devdocs/bash/special-builtins.html b/devdocs/bash/special-builtins.html new file mode 100644 index 00000000..4096a6dc --- /dev/null +++ b/devdocs/bash/special-builtins.html @@ -0,0 +1,13 @@ +<h1 class="section">Special Builtins</h1> <p>For historical reasons, the <small>POSIX</small> standard has classified several builtin commands as <em>special</em>. When Bash is executing in <small>POSIX</small> mode, the special builtins differ from other builtin commands in three respects: </p> <ol> <li> Special builtins are found before shell functions during command lookup. </li> +<li> If a special builtin returns an error status, a non-interactive shell exits. </li> +<li> Assignment statements preceding the command stay in effect in the shell environment after the command completes. </li> +</ol> <p>When Bash is not executing in <small>POSIX</small> mode, these builtins behave no differently than the rest of the Bash builtin commands. The Bash <small>POSIX</small> mode is described in <a href="bash-posix-mode">Bash POSIX Mode</a>. </p> <p>These are the <small>POSIX</small> special builtins: </p> +<div class="example"> <pre class="example">break : . continue eval exec exit export readonly return set +shift trap unset +</pre> +</div><div class="_attribution"> + <p class="_attribution-p"> + Copyright © 2000, 2001, 2002, 2007, 2008 Free Software Foundation, Inc.<br>Licensed under the GNU Free Documentation License.<br> + <a href="https://www.gnu.org/software/bash/manual/html_node/Special-Builtins.html" class="_attribution-link">https://www.gnu.org/software/bash/manual/html_node/Special-Builtins.html</a> + </p> +</div> |