BLACKHEART的博客

/var/spool/clientmqueue目录~清理今天nagios报警，一台服务器的disk满了，使用du -sh * 或 du -sh /* 查看目录的大小，查找占用空间大的目录/var/spool/clientmqueue…然后我就想/var/spool/clientmqueue这个目录干嘛用的，纠结了半天，谷歌了下，原来/var/spool/clientmqueue是如果系统中有用户开启了cron，而cron中执行的程序有输出内容，输出内容会以邮件形式发给cron的用户，而sendmail没

Run a cron command every 15 minutesCron is a time based scheduling service on Linux and Unix computers which allows you to run process at specific times for example once a day, once every hour and so...

查看文本文件，命令如下：cat filename当文件较大时，只需要查看最后几百行，可用如下命令：tail -n 20 filename#显示filename最后20行

#!/bin/bashcheckPort(){telnet $2 $3 <<! 1>checkPort.log 2>/dev/null^]close!ss=`cat checkPort.log | grep "Escape character is"`if [ "A$ss" = "A" ]thenecho "$2 port $3 checking r...

[root@dbtest ~]# cd /root [root@dbtest ~]# ls anaconda-ks.cfg ncurses-devel-5.7-3.20090208.el6.x86_64.rpm rlwrap-0.37-1.el5.x86_64.rpm Desktop readline-6.2

查看用户进程top u username查看端口占用netstat -tunpl |grep portnum查看进程详情ps -ef|grep PID杀死进程kill -9 PID