http://linux.die.net/man/5/dhcpd.conf Name dhcpd.conf - dhcpd configuration file Description   The dhcpd.conf file contains configuration information for dhcpd, the Internet Systems Consortium DHCP Server. The dhcpd.conf file is a free-form ASCII tex…

DHCP服务的配置 dhcpd.conf 是DHCP服务的配置文件,DHCP服务所有参数都是通过修改dhcpd.conf 文件来实现,安装后dhcpd.conf 是没有做任何配置的,将/usr/share/doc/dhcp-3.0.5/dhcpd.conf.sample 复制为dhcpd.conf 文件进行配置: updatedb一下然后locate dhcpd.conf一下会发现所有与dhcpd.conf有关的配置文件,拷贝一下吧 [root@Linux-a ~]# cp /usr/share…

fork(2): create child process - Linux man page https://linux.die.net/man/2/fork fork(2) - Linux man page Name fork - create a child process Synopsis #include <unistd.h> pid_t fork(void); Description   fork() creates a new process by duplicating the…

mkbundle(1) - Linux man page Name mkbundle, mkbundle2 - Creates a bundled executable. Synopsis mkbundle [options] assembly1 [assembly2 ...] Description mkbundle generates an executable program that will contain static copies of the assemblies listed…

#nginx conf by linux kernel net.ipv4.tcp_max_tw_buckets = 6000 net.ipv4.ip_local_port_range = 1024 65000 net.ipv4.tcp_tw_recycle=1 net_ipv4.tcp_tw_reuse=1 net_ipv4.tcp_syncookies=1 net.core.somaxconn=262144 net.core.netdev_max_backlog=262144 net.ipv4…

epoll使用详解(精髓) - Boblim - 博客园 https://www.cnblogs.com/fnlingnzb-learner/p/5835573.html epoll使用详解(精髓)   epoll - I/O event notification facility 在linux的网络编程中,很长的时间都在使用select来做事件触发.在linux新的内核中,有了一种替换它的机制,就是epoll.相比于select,epoll最大的好处在于它不会随着监听fd数目的增长而降低效率.…

使用man date来查看date命令的详细信息. lucifer@lucifer-virtual-machine:~$ man date DATE(1) User Commands DATE(1) # 请注意上面这个括号内的数字 NAME <==这个命令的完整全名,如下所示为date且说明简单用途为配置与显示日期/时间 date - print or set the system date and time SYNOPSIS <==这个命令的基本语法如下所示 date [OPTION]...…

转载自宋宝华:https://blog.csdn.net/21cnbao/article/details/80458173 这里总结几个Linux文件缓存(page cache)使用情况.命中率查看的工具. perf-tools里面的cachestat 来自于大名鼎鼎的Brendan Gregg的cachestat,已经被加到他的perf-tools http://www.brendangregg.com/blog/2014-12-31/linux-page-cache-hit-ratio.ht…

最近遇到一个page的释放异常的问题,堆栈如下: [ 1000.691858] BUG: Bad page state in process server.o pfn:309d22 [ mapcount: mapping:ffff880279688308 index:0x0 [ 1000.691860] page flags: 0x2fffff00020000(mappedtodisk) [ 1000.691862] page dumped because: non-NULL mapping […

例1   ddns-update-style interim; ignore client-updates; subnet 192.168.222.0 netmask 255.255.255.0 { # --- default gateway option routers 192.168.222.1; option subnet-mask 255.255.255.0; option nis-domain "linuxreaders.com"; option domain-name &q…