Bash 路径补全如何与 sudo 配合使用？

Question

选项卡路径完成不起作用（至少在 Ubuntu 和 AFAIK Arch 上）与

sudo mount <whatever>

我尝试挂载的 iso 文件不在/etc/fstab. 如果我只是输入

mount <whatever>

完成工作（但当然命令失败，因为我不是 root）。显然是sudo它打破了它。

如何使用 sudo 完成工作？

令人惊讶的是，与

sudo umount <whatever>

完成工作。它是如何实现的？它调查/etc/fstab吗？

解决方案：我只是将一个 shell 脚本放入带有传递给它的参数的/usr/local/bin调用中sudo mount ...。调用此脚本时完成工作，因为没有sudo障碍。

Answer 1

这完全没有关系bash，但它取决于包中编程的完成bash-completion。

从文件中的一些评论/etc/bash_completion.d/mount：

# mount(8) completion. This will pull a list of possible mounts out of
# /etc/{,v}fstab, unless the word being completed contains a ':', which
# would indicate the specification of an NFS server. In that case, we
# query the server for a list of all available exports and complete on
# that instead.
#

# umount(8) completion. This relies on the mount point being the third
# space-delimited field in the output of mount(8)
#

此外，您可以在主文件中找到/etc/bash_completion以下注释，明确讨论mount和umount命令：

# A meta-command completion function for commands like sudo(8), which need to
# first complete on a command, then complete according to that command's own
# completion definition - currently not quite foolproof (e.g. mount and umount
# don't work properly), but still quite useful.
#

更新：
有关的评论mount和umount取出命令，从bash_completion 在提交：

_command_offset: Restore compopts used by called command.

This fixes completions that rely on their compopts, most notably
mount(8).
Fixes bash-completion bug #313183.

发布于bash-completion 1.90