unlinks

Links or unlinks this header/ footer to or from the previous section

建立或取消此页眉/页脚与上一节的链接关系

The second was that, when unlinking a directory, pseudo helpfully unlinks the contents of that directory.

第二个选择是，在断开目录链接时，pseudo可以帮助断开该目录的内容的链接。

This code carefully unlinks the temporary file, leaving it open but already removed, to clean up automatically.

此代码小心地断开与临时文件的链接（让它仍是打开的，但已经被删除）来进行自动清空。

KEYCTL_UNLINK unlinks a key or keyring from another keyring.

KEYCTL UNLINK将密钥或keyring与另一个keyring的链接取消。

Effects: Unlinks the node from the circular list.

作用：从循环链表断开该节点的链接。