通常在调试问题时sudo
我会看配置文件中的选项/etc/sudoers
。但是,很难知道默认情况下启用了哪些选项,因为它们内置在可执行文件中,因此通常不在sudo
的config中。
如何获得sudo
要在给定系统上使用的所有选项的详尽列表?
您可以使用该命令sudo sudo -V
获取所有选项。
$ sudo sudo -V
Sudo version 1.8.6p7
与其一起构建的配置选项
配置选项:--build = x86_64-redhat-linux-gnu --host = x86_64-redhat-linux-gnu --program-prefix = --disable-dependency-tracking --prefix = / usr --exec-prefix = / usr --bindir = / usr / bin --sbindir = / usr / sbin --sysconfdir = / etc --datadir = / usr / share --includedir = / usr / include --libdir = / usr / lib64- libexecdir = / usr / libexec --localstatedir = / var --sharedstatedir = / var / lib --mandir = / usr / share / man --infodir = / usr / share / info --prefix = / usr --sbindir = / usr / sbin --libdir = / usr / lib64 --docdir = / usr / share / doc / sudo-1.8.6p7 --with-logging = syslog --with-logfac = authpriv --with-pam --with -pam-login --with-editor = / bin / vi --with-env-editor --with-ignore-dot --with-tty-tickets --with-ldap --with-selinux --with-passprompt = [sudo]%p的密码:--with-linux-audit --with-sssd Sudoers策略插件版本1.8.6p7 Sudoers文件语法版本42
配置文件
Sudoers path: /etc/sudoers
nsswitch path: /etc/nsswitch.conf
ldap.conf path: /etc/ldap.conf
ldap.secret path: /etc/ldap.secret
选项
Authentication methods: 'pam'
Syslog facility if syslog is being used for logging: authpriv
Syslog priority to use when user authenticates successfully: notice
Syslog priority to use when user authenticates unsuccessfully: alert
Ignore '.' in $PATH
Send mail if the user is not in sudoers
Use a separate timestamp for each user/tty combo
Lecture user the first time they run sudo
Require users to authenticate by default
Root may run sudo
Allow some information gathering to give useful error messages
Only allow the user to run sudo if they have a tty
Visudo will honor the EDITOR environment variable
Set the LOGNAME and USER environment variables
Length at which to wrap log file lines (0 for no wrap): 80
Authentication timestamp timeout: 5.0 minutes
Password prompt timeout: 5.0 minutes
Number of tries to enter a password: 3
Umask to use or 0777 to use user's: 022
Path to mail program: /usr/sbin/sendmail
Flags for mail program: -t
Address to send mail to: root
Subject line for mail messages: *** SECURITY information for %h ***
Incorrect password message: Sorry, try again.
Path to authentication timestamp dir: /var/db/sudo
Default password prompt: [sudo] password for %p:
Default user to run commands as: root
Value to override user's $PATH with: /sbin:/bin:/usr/sbin:/usr/bin
Path to the editor for use by visudo: /bin/vi
When to require a password for 'list' pseudocommand: any
When to require a password for 'verify' pseudocommand: all
File descriptors >= 3 will be closed before executing a command
Reset the environment to a default set of variables
环境变量
Environment variables to check for sanity:
TERM
LINGUAS
LC_*
LANGUAGE
LANG
COLORTERM
Environment variables to remove:
TMPPREFIX
ZDOTDIR
READNULLCMD
NULLCMD
FPATH
JAVA_TOOL_OPTIONS
SHELLOPTS
GLOBIGNORE
PS4
BASH_ENV
ENV
TERMCAP
TERMPATH
TERMINFO_DIRS
TERMINFO
_RLD*
LD_*
PATH_LOCALE
NLSPATH
HOSTALIASES
RES_OPTIONS
LOCALDOMAIN
CDPATH
IFS
Environment variables to preserve:
XAUTHORITY
_XKB_CHARSET
LINGUAS
LANGUAGE
LC_ALL
LC_TIME
LC_TELEPHONE
LC_PAPER
LC_NUMERIC
LC_NAME
LC_MONETARY
LC_MESSAGES
LC_MEASUREMENT
LC_IDENTIFICATION
LC_COLLATE
LC_CTYPE
LC_ADDRESS
LANG
USERNAME
QTDIR
PS2
PS1
MAIL
LS_COLORS
KDEDIR
INPUTRC
HISTSIZE
HOSTNAME
DISPLAY
COLORS
杂项
Locale to use while parsing sudoers: C
Compress I/O logs using zlib
Directory in which to store input/output logs: /var/log/sudo-io
File in which to store the input/output log: %{seq}
Add an entry to the utmp/utmpx file when allocating a pty
Local IP address and netmask pairs:
192.168.1.20/255.255.255.0
192.168.122.1/255.255.255.0
fe80::226:c7ff:fe85:a720/ffff:ffff:ffff:ffff::
Sudoers I/O plugin version 1.8.6p7
查找sudo
配置的另一种方法是使用sudo -l
。
$ sudo -l
Matching Defaults entries for saml on this host:
requiretty, env_reset, env_keep="COLORS DISPLAY HOSTNAME HISTSIZE INPUTRC KDEDIR LS_COLORS", env_keep+="MAIL PS1 PS2 QTDIR USERNAME LANG
LC_ADDRESS LC_CTYPE", env_keep+="LC_COLLATE LC_IDENTIFICATION LC_MEASUREMENT LC_MESSAGES", env_keep+="LC_MONETARY LC_NAME LC_NUMERIC LC_PAPER
LC_TELEPHONE", env_keep+="LC_TIME LC_ALL LANGUAGE LINGUAS _XKB_CHARSET XAUTHORITY", secure_path=/sbin\:/bin\:/usr/sbin\:/usr/bin
User saml may run the following commands on this host:
(ALL) ALL
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