新装的Ubuntu,安装了jdk,在/etc/profile文件中也配置了环境变量,但是奇怪的事情发生了,当执行:
java -version
时,没有任何问题,但执行:
sudo java -version
时,却报错:
sudo: java: command not found
在网上搜索到解决方案:
1、执行命令:
sudo visudo
打开/etc/sudoers文件:
#
# This file MUST be edited with the 'visudo' command as root.
#
# Please consider adding local content in /etc/sudoers.d/ instead of
# directly modifying this file.
#
# See the man page for details on how to write a sudoers file.
#
Defaults env_reset
Defaults mail_badpass
Defaults secure_path="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/snap/bin"
# Host alias specification
# User alias specification
# Cmnd alias specification
# User privilege specification
root ALL=(ALL:ALL) ALL
注意:用vi 直接打开/etc/sudoers无法编辑
2、将java的bin目录加入到secure_path配置中:
#
# This file MUST be edited with the 'visudo' command as root.
#
# Please consider adding local content in /etc/sudoers.d/ instead of
# directly modifying this file.
#
# See the man page for details on how to write a sudoers file.
#
Defaults env_reset
Defaults mail_badpass
Defaults secure_path="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/snap/bin:/opt/jdk1.8.0_221/bin"
# Host alias specification
# User alias specification
# Cmnd alias specification
# User privilege specification
root ALL=(ALL:ALL) ALL
3、用Ctrl+X退出,并选择保存
通过以上操作后,问题得到了解决。
但是为什么呢,原来是因为secure_path定义了使用sudo时PATH环境变量的值,那么如果不定义呢,是否sudo时PATH的值就是本来环境变量的值呢。
抱着刨根问底的精神,我试着将secure_path那行注释掉,然后我发现这个时候sudo能用任何命令了。