為什麼我在以 sudo 身份執行命令時沒有收到密碼提示，即使我的使用者組甚至不在 sudoers 文件中？

我在/etc其中具有以下權限：

drwxr-xr-x  23 root  wheel  2560 Jul  1 20:47 etc

$ whoami
pierre
$ groups
pierre

sudo如果我想touch foo進去，我必須跑/etc。

我想要的是被提示輸入root密碼，但我沒有得到提示，即使更改了這一行：

%wheel ALL=(ALL) NOPASSWD: ALL

到sudo visudo：

%wheel ALL=(ALL) PASSWD: ALL

考慮到我目前的使用者不在組中，這應該沒關係wheel……我已經確保該root帳戶設置了密碼（通過使用 設置它sudo passwd root）。

我在 FreeBSD 10.3-RELEASE-p11 雲伺服器上。

非常感謝任何關於為什麼我沒有提示輸入密碼的見解！

在添加@jesse_b 的答案中建議的行後，這是我的 suoders 文件。

## sudoers file.
##
## This file MUST be edited with the 'visudo' command as root.
## Failure to use 'visudo' may result in syntax or file permission errors
## that prevent sudo from running.
##
## See the sudoers man page for the details on how to write a sudoers file.
##

##
## Host alias specification
##
## Groups of machines. These may include host names (optionally with wildcards),
## IP addresses, network numbers or netgroups.
# Host_Alias    WEBSERVERS = www1, www2, www3

##
## User alias specification
##
## Groups of users.  These may consist of user names, uids, Unix groups,
## or netgroups.
# User_Alias    ADMINS = millert, dowdy, mikef

##
## Cmnd alias specification
##
## Groups of commands.  Often used to group related commands together.
# Cmnd_Alias    PROCESSES = /usr/bin/nice, /bin/kill, /usr/bin/renice, \
#               /usr/bin/pkill, /usr/bin/top
# Cmnd_Alias    REBOOT = /sbin/halt, /sbin/reboot, /sbin/poweroff

##
## Defaults specification
##
## Uncomment if needed to preserve environmental variables related to the
## FreeBSD pkg utility and fetch.
# Defaults     env_keep += "PKG_CACHEDIR PKG_DBDIR FTP_PASSIVE_MODE"
##
## Additionally uncomment if needed to preserve environmental variables
## related to portupgrade
# Defaults     env_keep += "PORTSDIR PORTS_INDEX PORTS_DBDIR PACKAGES PKGTOOLS_CONF"
##
## You may wish to keep some of the following environment variables
## when running commands via sudo.
##
## Locale settings
# Defaults env_keep += "LANG LANGUAGE LINGUAS LC_* _XKB_CHARSET"
##
## Run X applications through sudo; HOME is used to find the
## .Xauthority file.  Note that other programs use HOME to find   
## configuration files and this may lead to privilege escalation!
# Defaults env_keep += "HOME"
##
## X11 resource path settings
# Defaults env_keep += "XAPPLRESDIR XFILESEARCHPATH XUSERFILESEARCHPATH"
##
## Desktop path settings
# Defaults env_keep += "QTDIR KDEDIR"
##
## Allow sudo-run commands to inherit the callers' ConsoleKit session
# Defaults env_keep += "XDG_SESSION_COOKIE"
##
## Uncomment to enable special input methods.  Care should be taken as
## this may allow users to subvert the command being run via sudo.
# Defaults env_keep += "XMODIFIERS GTK_IM_MODULE QT_IM_MODULE QT_IM_SWITCHER"
##
## Uncomment to use a hard-coded PATH instead of the user's to find commands
# Defaults secure_path="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
##
## Uncomment to send mail if the user does not enter the correct password.
# Defaults mail_badpass
##
## Uncomment to enable logging of a command's output, except for
## sudoreplay and reboot.  Use sudoreplay to play back logged sessions.
# Defaults log_output
# Defaults!/usr/bin/sudoreplay !log_output
# Defaults!/usr/local/bin/sudoreplay !log_output
# Defaults!REBOOT !log_output

##
## Runas alias specification
##
Defaults rootpw
##
## User privilege specification
##
root ALL=(ALL) ALL

## Uncomment to allow members of group wheel to execute any command
# %wheel ALL=(ALL) ALL

## Same thing without a password
%wheel ALL=(ALL) PASSWD: ALL

## Uncomment to allow members of group sudo to execute any command
# %sudo ALL=(ALL) ALL

## Uncomment to allow any user to run sudo if they know the password
## of the user they are running the command as (root by default).
# Defaults targetpw  # Ask for the password of the target user
# ALL ALL=(ALL) ALL  # WARNING: only use this together with 'Defaults targetpw'

## Read drop-in files from /usr/local/etc/sudoers.d
## (the '#' here does not indicate a comment)
#includedir /usr/local/etc/sudoers.d

這是一個不明顯的語法，因為它看起來像一個註釋，但 sudoers 允許您使用指令在另一個目錄中包含規則：

#includedir /usr/local/etc/sudoers.d

您的 nopasswd 規則很可能存在於該目錄的文件中。

嘗試將以下行添加到/etc/sudoers：

Defaults rootpw

我認為只要使用者是 wheel 組的成員，sudo 通常會提示輸入目前使用者的密碼。

引用自：https://unix.stackexchange.com/questions/374708