1若能远程操作,在服务器上设置ssh服务 a、修改sshd_config文件,命令为:vi /etc/ssh/sshd_config b、将#PasswordAuthent
1
若能远程操作,在服务器上设置ssh服务
a、修改sshd_config文件,命令为:vi /etc/ssh/sshd_config
b、将#PasswordAuthentication no的注释去掉,并且将NO修改为YES
c、将#PermitRootLogin yes的注释去掉
d、重新启动SSH服务,,命令为:/etc/init.d/sshd restart
e、验证SSH服务状态,命令为:/etc/init.d/sshd status
2
看磁盘容量
df -h
3
查看系统版本
uname -a
4
查看磁盘驱动器
fdisk -l
5
加载光盘
mount -t iso9660 /dev/hdc /mnt/cdrom
加载U盘
mount /dev/hdc /mnt/upan
6
本机拷贝文件
cp -R /mnt/upan/xxx /usr/local/kb
远程文件拷贝
scp /mnt/upan/xxx.sh root@IP_ADDR:/usr/local/kb
7
查看当前文件夹下各文件的权限
ls -l
8
执行权限给setup.sh
chmod +x ./setup.sh
9
修改文件夹属主和数组
chown -R kb:kb /data
10
如果安装过程中报没找到一些链接库
查找系统中相关链接库
find / -name libName
11
建立软连接,后继续安装
ln -s *.so *.so
12
或者设置依赖链接库路径
export LD_LIBRARY_PASS =~PWD~
export LD_LIBRARY_PASS =/usrlocal/BaseSoft/king/bin
echo $LD_LIBRARY_PASS
13
查看目标程序依赖的链接库是否都ok
ldd kb
14
查看系统资源限制,有时需要调整进程能打开的文件句柄数量的限制open files等
ulimit -a
15
查进程id
ps -ef|grep kb
16
干掉这个进程
kill -9 kb_进程id

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No,youshouldnotusetherootuserinMySQLforyourproduct.Instead,createspecificuserswithlimitedprivilegestoenhancesecurityandperformance:1)Createanewuserwithastrongpassword,2)Grantonlynecessarypermissionstothisuser,3)Regularlyreviewandupdateuserpermissions

MySQLstringdatatypesshouldbechosenbasedondatacharacteristicsandusecases:1)UseCHARforfixed-lengthstringslikecountrycodes.2)UseVARCHARforvariable-lengthstringslikenames.3)UseBINARYorVARBINARYforbinarydatalikecryptographickeys.4)UseBLOBorTEXTforlargeuns


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