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./command -yes -no /home/username | |
$# = 3 | |
$* = -yes -no /home/username | |
$@ = array: {"-yes", "-no", "/home/username"} | |
$0 = ./command, $1 = -yes etc. | |
chkconfig --list #列出所有的系统服务 | |
chkconfig --add httpd #增加httpd服务 | |
chkconfig --del httpd #删除httpd服务 | |
chkconfig --level httpd 2345 on #设置httpd在运行级别为2、3、4、5的情况下都是on(开启)的状态 | |
chkconfig --list #列出系统所有的服务启动情况 | |
chkconfig --list mysqld #列出mysqld服务设置情况 | |
chkconfig --level 35 mysqld on #设定mysqld在等级3和5为开机运行服务,--level 35表示操作只在等级3和5执行,on表示启动,off表示关闭 | |
chkconfig mysqld on #设定mysqld在各等级为on,“各等级”包括2、3、4、5等级 | |
set names utf8 #mysql命令行中输入,解决中文乱码问题 |
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#安装这个模块和其依赖的模块 | |
mvn clean install -pl [module] -am -DskipTests | |
#同步mongo和solr之间的数据 | |
mongo-connector -m localhost:27117 -t http://localhost:8983/solr/[solr.core] -d solr_doc_manager -a [mongo.user.name] -p [mongo.user.password] -n sns.[collection] | |
#下载jdk8 | |
nohup wget --no-cookies --no-check-certificate --header "Cookie: gpw_e24=http%3A%2F%2Fwww.oracle.com%2F; oraclelicense=accept-securebackup-cookie" "http://download.oracle.com/otn-pub/java/jdk/8u51-b16/jdk-8u51-linux-x64.rpm" & | |
nohup wget --no-cookies --no-check-certificate --header "Cookie: gpw_e24=http%3A%2F%2Fwww.oracle.com%2F; oraclelicense=accept-securebackup-cookie" "http://download.oracle.com/otn-pub/java/jdk/8u51-b16/jdk-8u51-linux-x64.tar.gz" & |
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# delete keys matching a pattern | |
redis-cli -n 5 keys "prefix:*" | xargs redis -n 5 del | |
EVAL "return redis.call('del', unpack(redis.call('keys', ARGV[1])))" 0 prefix:* | |
EVAL "return redis.call('del', unpack(redis.call('keys', ARGV[1])))" 0 prefix:* | |
for _,k in ipairs(redis.call('keys', ARGV[1])) do | |
redis.call('del', k) | |
end |
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#利用top的交互命令数字1查看那每个CPU的性能数据 | |
#查看已经使用了多少个数据库连接 | |
netstat -nat | grep 3306 -c | |
#查看java线程个数 | |
ps -eLF | grep java -c |
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