java 权限不够
-bash: /root/java/jdk1.7.0_79/bin/java: Permission denied
chmod +x 即可
坏境变量的原因
Ubuntu
类型 以下问题
Command 'ls' is available in '/bin/ls'
The command could not be located because '/bin' is not included in the PATH environment variable.
ls: command not found
修改export PATH=$NODE_HOME:$PATH将其修改正确
/usr/bin
/bin
/sbin
/usr/sbin
ubuntu 16.04 ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: YES)
1、跳过密码进行登录
vim /etc/mysql/my.cnf
1)在[mysqld]的段中加上两句:
skip-name-resolve
skip-grant-tables
例如:
[mysqld]
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock
skip-name-resolve
skip-grant-tables
保存并且退出vim。
(2)重新启动mysql:
service mysql restart
(3) 登陆mysql
mysql -u root -p;
(4) 修改密码
use mysql ;
update user set password=password("yournewpassword") where user='root';
flush privileges; quit
3、将MySQL的登录设置修改回来
vim /etc/mysql/my.cnf
此语句用于跳过dns域名解析,在局域网连接时会更快捷。不过使用此命令,mysql库的user表中的host须由原来localhost改为%,
skip-grant-tables
此语句用于跳过user表权限检查,在忘记密码时可以直接登录数据库。