o Use the dmesg command, but be sure to pipe the output to less because there will be much more than a screen’s worth. The dmesg command uses the kernel ring buffer, which is of limited size, but most newer kernels have a large enough buffer to hold boot messages for a long time....
For a very quick summary of your current connection status, use the nm-tool command with no arguments. You’ll get a list of interfaces and configuration parameters. In some ways, this is like ifconfig except that there’s more detail, especially when viewing wireless connections. 除了小程序...
addresses of the secure* code also needs to be relocated along with the accompanying u-boot* code.** So DISCARD is only for CONFIG_ARMV7_SECURE_BASE.*//DISCARD/ : { *(.rel._secure*) }#endif/** 指定可执行文件(image)的全局入口地址,通常都放在ROM(flash)0x0位置* 设置 0 的原因是 arm...
# 1. 启动server端,while :; do (echo -ne "HTTP/1.1 200 OK\r\nhello world")|nc -l -p 8000; done # 2. 启动client端,echo "GET / HTTP/1.0\r\n\r\n" | nc 127.0.0.1 8000,输出如下: [root@VM-16-16-centos ~]# echo "GET / HTTP/1.0\r\n\r\n" | nc 127.0.0.1 8000 HTTP/...
We store the status in the * low byte and the number of interrupts received since * the last read in the remainder of rtc_irq_data. */ spin_lock(&rtc_lock); rtc_irq_data += 0x100; rtc_irq_data &= ~0xff; if (is_hpet_enabled()) { /* * In this case it is HPET RTC ...
-> b.trx_mysql_thread_id blocking_thread,t.processlist_command state,b.trx_query blocking_current_query,e.sql_text blocking_last_query -> FROM information_schema.innodb_lock_waits w -> JOIN information_schema.innodb_trx b ON b.trx_id = w.blocking_trx_id ...
systemctl get-default #To set a default target, run: systemctl set-default TARGET.target systemctl是system control的缩写 init 5: 这个命令用于切换系统到运行级别 5,这通常是图形用户界面模式。 在传统的 SysV init 系统中,init 5将立即改变当前运行级别到 5。这个命令不依赖于你当前处于哪个运行级别,它...
Get Started Cumulus Linux is installed on the switch by default. To upgrade to a different Cumulus Linux release or re-install Cumulus Linux, refer to Installation Management. To show the Cumulus Linux release installed on the switch, run the NVUE nv show system command. When starting Cumulus ...
The mkdir command allows you to create a new folder. You simply pass the name of the directory to create.Syntax:mkdir [options] <directory>This will create a directory called “newproject” in the current working directory.Some useful mkdir options:...
-A FORWARD -i $PORTA -j ACCEPT -A FORWARD -o $PORTA -j ACCEPT <-- This rule is performed LAST (because of egress interface matching) -A FORWARD -i $PORTB -j DROP If you modify the rules like this, they are performed in order: -A FORWARD -i $PORTA -j ACCEPT -A FORWARD -i...