o /var The variable subdirectory, where programs record runtime information. System logging, user tracking, caches, and other files that system programs create and manage are here. (You’ll notice a /var/tmp directory here, but the system doesn’t wipe it on boot. o /bin:包含可直接运行的...
范例:在该文件内搜寻 MANPATH 这个字串 [root@study ~]# more /etc/man_db.conf # # # This file is used by the man-db package to configure the man and cat paths. # It is also used to provide a manpath for those without one by examining # their PATH environment variable. For details...
AI代码解释 struct epoll_event{__uint32_t events;/* Epoll events */epoll_data_t data;/* User data variable */};events 描述事件类型,具体类型有:EPOLLIN:表示对应的文件描述符可读EPOLLOUT:表示对应的文件描述符可写EPOLLPRI:表示对应的文件描述符有紧急的数据可读EPOLLERR:表示对应的文件描述符发生错误EPO...
or an invalid file descriptor is supplied as the argument to -u. readarray: readarray [-n count] [-O origin] [-s count] [-t] [-u fd] [-C callback] [-c quantum] [array] Read lines from a file into an array variable. A synonym for `mapfile'. readonly: readonly [-aAf] [...
{N1[,N2]}c{N3[,N4]}:FROMNAME的N1(含)至N2(含)行修改为TONAME的N3(含)至N4(含)行。 <:从FROMNAME删除的行。 >:添加到TONAME的行。 egrep 类似grep -E,参看grep。 grep 查找匹配字符串的行。 grep [-acEinrsv -A N -B N -C N --color] REGEXP {FILENAME|DIR}[ ...]|STDIN ...
在我顿悟后,进入 bios,果然发现快速启动下的sata support设置成仅最后一次加载的 SATA 设备。改成所有 sata 设备后,Grub2 正常引导 Windows Boot Manager。 这个问题跟哪个系统没关系,只是因为我的 Windows 装在 sata 接口的固态里。而 Rocky 装在 NVMe 的固态里。
| Variable_name | Value | +---+---+ | query_cache_limit | 2097152 | | query_cache_min_res_unit | 4096 | | query_cache_size | 203423744 | | query_cache_type | ON | | query_cache_wlock_invalidate | OFF | +---+---+ 各字段的解释: query_cache_limit:超过此...
如果有人问我,程序员做的事,最没实际价值,最容易让用户不爽的是什么?回答: —— 安全如果有人问我,程序员做的事,最必要的是什么?回答: —— 安全如果有人问...
我们 可以使用命令 help readarray 来查看 readarray 命令的帮助信息。 purleEndurer @ bash ~ $ help readarray readarray: readarray [-n count] [-O origin] [-s count] [-t] [-u fd] [-C callback] [-c quantum] [array] Read lines from a file into an array variable. ...
nm - memory modify (constant address)ping - send ICMP ECHO_REQUEST to network host printenv- print environment variables reginfo - print register information reset - Perform RESET of theCPUrun - run commands in an environment variable saveenv - save environment variables to persistent storage ...