linux问题总结
1.修改redhat enterprise5 语言
问题描述：切换语言
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cd /etc/sysconfig |
2.bash: ifconfig: command not found
问题描述：
切换到root用户下
[root@localhost /]$ ifconfig
依然提示：“bash: ifconfig: command not found”
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whereis ifconfig 看一下这个命令在哪个目录下 方法一：[root@localhost sbin]$ /sbin/ifconfig 就可以出现使用了
方法三:修改/etc/profile文件,注释掉if语句即可 |
3. redhat linux开机就进入到命令行
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vi /etc/inittab id:5:initdefault: 把这一句里面的5改成3就 |
4. redhat安装JDK失败
在 red hat enterprise linux5安装 jdk-7u21-linux-i586.tar.gz 时候出现下面的错误 ：
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Error: dl failure on line 864 Error: failed /home/jiangyang/jdk1.7.0_21/jre/lib/i386/client/libjvm.so, because /home/jiangyang/jdk1.7.0_21/jre/lib/i386/client/libjvm.so: cannot restore segment prot after reloc: Permission denied |
解决方案：
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chcon -t textrel_shlib_t $JAVA_HOME/jre/lib/i386/client/libjvm.so |
5. 设置mysql远程连接root权限
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mysql> Grant all privileges on *.* to ‘root‘@‘%‘ identified by ‘密码‘ with grant option; (运行此句才生效，或者重启MySQL) |
6. ubuntu 配置静态IP
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root@ubuntu1:~# vi /etc/network/interfaces |
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# This file describes the network interfaces available on your system # and how to activate them. For more information, see interfaces(5).
# The loopback network interface auto lo iface lo inet loopback
# The primary network interface auto eth0
iface eth0 inet static address 192.168.2.111 netmask 255.255.255.0 gateway 192.168.2.1 |
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root@ubuntu1:~# /etc/init.d/networking restart |
如果配置动态IP如下：
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# This file describes the network interfaces available on your system # and how to activate them. For more information, see interfaces(5).
# The loopback network interface auto lo iface lo inet loopback
# The primary network interface auto eth0 iface eth0 inet dhcp |
7Ubuntu 安装 chkconfig
在Ubuntu中是没有chkconfig命令，通过安装chkconfig_11.0-79.1-2_all.deb来达到使用chkconfig命令的目的。
8.ubuntu mysql安装
安装mysql-6.0.7-alpha-linux-i686-glibc23.tar.gz版本的linux。
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groupadd mysql useradd -g mysql mysql cd /usr/local gunzip < /path/to/mysql-VERSION-OS.tar.gz | tar xvf - ln -s full-path-to-mysql-VERSION-OS mysql cd mysql chown -R mysql . chgrp -R mysql . scripts/mysql_install_db --user=mysql chown -R root . chown -R mysql data bin/mysqld_safe --user=mysql & /usr/local/mysql/bin/mysqladmin -u root password ‘新密码’ cp support-files/mysql.server /etc/init.d/mysql chmod +x /etc/rc.d/init.d/mysql chkconfig --add mysql cp support-files/my-medium.cnf /etc/my.cnf service mysql start |
9. linux下的mysql乱码
在linux下中使用mysql的话可能会出现中午乱码的情况。通过查询mysql的编码集可以发现是使用的latin1需要修改。
修改/etc/my.cnf配置文件。
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# The following options will be passed to all MySQL clients [client] #password = your_password port = 3306 socket = /tmp/mysql.sock default-character-set=utf8
# Here follows entries for some specific programs
# The MySQL server [mysqld] port = 3306 socket = /tmp/mysql.sock skip-locking key_buffer = 16M max_allowed_packet = 1M table_cache = 64 sort_buffer_size = 512K net_buffer_length = 8K read_buffer_size = 256K read_rnd_buffer_size = 512K myisam_sort_buffer_size = 8M default-character-set=utf8 |
重启数据库后再次查看数据库的编码集信息。
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/etc/init.d/mysql stop /etc/init.d/mysql start |
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