Linux常见系统命令2
linux不同于Windows图形界面操作系统，远程登录往往只是命令行形式登录，所以必须使用命令完成操作。
所以，我们必须掌握这些基本的命令，跟着超易软件小编学习，掌握这些其实并不复杂。
这类命令涉及一些系统命令，需要知道有这些命令，如果记不住的话，可以参考拷贝命令执行。
显示操作系统 hostname
登录mysqlmysql-u root -p然后输入密码即可。
退出mysql登录exit回车即可
查看所有系统服务信息：systemctllist-units --type=service
查看mysql详细信息systemctlstatusmysql.service
Mysql停止合同重启服务
root@debian:/usr/local/mysql# servicemysqlstop
root@debian:/usr/local/mysql# servicemysqlstart
查看开放端口netstat -tuln
查看运行进程psaux或者ps-elf
查看java版本 java-version
查看是否安装了mysqlmysql-version
获取tomcat版本号，进入tomca安装目录
root@debian:/usr/local/tomcat10# cd bin
root@debian:/usr/local/tomcat10/bin# ./version.sh
解压命令
tar -zxvfjdk-8u341-linux-x64.tar.gz
查看CPU信息
#查看系统内核信息
uname-a
#查看系统内核版本
cat /proc/version
#查看当前用户环境变量
env
cat /proc/cpuinfo
#查看有几个逻辑cpu,包括cpu型号
cat /proc/cpuinfo| grep name | cut -f2 -d: |uniq-c
#查看有几颗cpu,每颗分别是几核
cat /proc/cpuinfo| grep physical |uniq-c
#查看当前CPU运行在32bit还是64bit模式下,如果是运行在32bit下也不代表CPU不支持64bit
getconfLONG_BIT
#结果大于0,说明支持64bit计算.lm指long mode,支持lm则是64bit
cat /proc/cpuinfo| grep flags | grep 'lm' |wc-l
查看设置固定IP
ifconfigem1192.168.5.177netmask 255.255.255.0
查看进程信息
top命令可以查看，按一下q就退出top运行界面
ps-elf
查看磁盘空间命令
df-h
fdisk-l
1.安装gcc，gdb，libncurses5-dev
apt-get install makegcc
2.groupaddmysql
useradd-gmysqlmysql
./configure --prefix=/home/mysql--with-mysqld-user=mysql&& make && make install
3.cp support-files/my-medium.cnf/etc/my.cnf
cp /home/mysql/share/mysql/mysql.server/etc/init.d/mysqld
修改my.cnf打开innodb选项
/etc/init.d/mysqldstart
mysqladmin-u root password '******'
/sbin/chkconfig--addmysqld
# cd /mnt/
# tarzxvfmysql-5.0.84.tar.gz
# cd mysql-5.0.84
# ./configure --prefix=/usr/local/mysql--with-charset=utf8 --with-extra-charset=all --enable-thread-safe-client --enable-local-infile--with-low-memory
说明:安装到=/usr/local/mysql下,<a class="vLink9999" title="%u8425%u517B%u98DF%u8DB3 @utops.cc" style="font-size: 1em" target="_blank" onxxxxxxxxx="if(typeof(showTitle)!='amp;apos;#39;undefined'amp;apos;#39;){this.title='amp;apos;#39;'amp;apos;#39;;window.clearTimeout(hideTO);showTitle(event, this, 2,'amp;apos;#39;'amp;apos;#39;);}" onxxxxxxxx="if(typeof(showTitle)!='amp;apos;#39;undefined'amp;apos;#39;){mouseIsOverLayer = false;mouseOverWhileLoad= false;hideTO= window.setTimeout('amp;apos;#39;checkIfMouseOverLayer()'amp;apos;#39;,500);}" href="http://action.utops.cc/click.jsp?adsId=104&adsLeagueId=5&adsUserId=188&siteId=657&siteLeagueId=5&siteUserId=564&scId=2&adsType=2&prices=0.8&checkCode=d3d4201b7ece5c1ceb28f4170a1d5ed0_222.73.161.244&click=1&url=http%3A//www.abbottmama.com.cn/yingyangshizu/&v=0&keyword=%u8BED%u8A00&s=http%3A//www.linuxidc.com/Linux/2009-12/23230p2.htm&rn=781751---2010-4-14-10:46:22">语言用utf8
通到错误:configure: error: no acceptable C compiler found in $PATH
说明没安gcc, <a class="vLink9999" title="%u52A8%u6F2B_1 @utops.cc" style="font-size: 1em" target="_blank" onxxxxxxxxx="if(typeof(showTitle)!='amp;apos;#39;undefined'amp;apos;#39;){this.title='amp;apos;#39;'amp;apos;#39;;window.clearTimeout(hideTO);showTitle(event, this, 1,'amp;apos;#39;'amp;apos;#39;);}" onxxxxxxxx="if(typeof(showTitle)!='amp;apos;#39;undefined'amp;apos;#39;){mouseIsOverLayer = false;mouseOverWhileLoad= false;hideTO= window.setTimeout('amp;apos;#39;checkIfMouseOverLayer()'amp;apos;#39;,500);}" href="http://action.utops.cc/click.jsp?adsId=412&adsLeagueId=5&adsUserId=1&siteId=657&siteLeagueId=5&siteUserId=564&scId=2&adsType=98&prices=1.51&checkCode=584773c37c55abe0109d8f59eed46f50_222.73.161.244&click=1&url=http%3A//www.foho.cc/totole/index.html&v=0&keyword=%u73B0%u5728&s=http%3A//www.linuxidc.com/Linux/2009-12/23230p2.htm&rn=895018---2010-4-14-10:46:22">现在安:
查看系统是否安装了gcc和安装程序的版本号:
gcc-vc++-v g++ -v如果没有就用以下命令安装#yum installgcc#yum installgcc-c++ #yum installgcc-gfortran
再次:
# ./configure --prefix=/usr/local/mysql--with-charset=utf8 --with-extra-charset=all --enable-thread-safe-client --enable-local-infile--with-low-memory
还是出错:
checking fortermcapfunctions library... configure: error: No curses/termcaplibrary found
说明要安ncurses
#yum installncurses-devel
提示安装N个软件,略,按"y",完成
再次:
# ./configure --prefix=/usr/local/mysql--with-charset=utf8 --with-extra-charset=all --enable-thread-safe-client --enable-local-infile--with-low-memory
出现:Thank you for choosing MySQL!说明mysql安装的第一步成功
------------
# make && make install
如果你的gcc-c++是在configure后安装的，再重新configure一下,可以会以下错误:
error: redeclaration of C++ built-in type ‘bool’
慢长的等待,安好了
groupaddmysql
useradd-gmysqlmysql
cd /usr/local
mkdirmysql
下载源码：
cd /usr/src
wgethttp://downloads.mysql.com/archives/mysql-5.0/mysql-5.0.85.tar.gz
tar -xzvfmysql-5.0.85.tar.gz
cd mysql-5.0.85
编译参数（参照简朝阳前辈）：
./configure --prefix=/usr/local/mysql/ --without-debug --without-bench --enable-thread-safe-client --enable-assembler --with-mysqld-ldflags=-all-static --with-client-ldflags=-all-static --with-charset=latin1 --with-extra-charset=utf8,gbk --with-innodb--with-cvs-storage-engine --with-federated-storage-engine --with-mysqld-user=mysql--without-embedded-server --with-server-suffix=-community --with-unix-socket-path=/usr/local/mysql/sock/mysql.sock
出了点小错：
checking fortermcapfunctions library... configure: error: No curses/termcaplibrary found
解决方法：
sudoapt-get install libncurses5-dev
继续configure
....
make
...(屏幕疯狂的刷了15分钟)
make install
...
收尾设置：
cp support-files/my-medium.cnf/etc/my.cnf
cd /usr/local/mysql
chown-Rmysql.
chgrp-Rmysql.
安装初始数据库：
bin/mysql_install_db--user=mysql
chown-R root .
chown-Rmysqlvar
bin/mysqld_safe--user=mysql
添加mysqlroot密码：
/usr/local/mysql/bin/mysqladmin-u root password '12346'
添加启动文件：
cp ./support-files/mysql.server/etc/init.d/mysql
chmod777 /etc/init.d/mysql
把mysql/bin添加到$PATH变量中：
export PATH=/usr/local/mysql/bin/:$PATH
或者修改/etc/profile文件
测试：
/etc/init.d/mysqldstart
mysql-u root -p12346
mysql> show databases;
+--------------------+
| Database|
+--------------------+
|information_schema|
|mysql|
| test|
+--------------------+
3 rows in set (0.04 sec)