如果父进程一直没有来关心退出的子进程,那么这个子进程将长时间处于 Z 状态。 上面这段代码在 process 进程中通过调用 fork 接口创建了一个子进程,子进程在执行完五次打印后就会被终止掉,其中的 exit 函数就是用来终止一个进程,父进程将一直运行。 子进程执行完5次打印后就处于 Z 状态并且后面跟了一个单词 def...
iostat <parameters> <number-of-iterations> <block-devices> 这些参数决定了提供哪些信息iostat。 如果没有任何命令参数,iostat则显示基本详细信息: 输出 [host@rhel76 ~]$ iostat Linux 3.10.0-957.21.3.el7.x86_64 (rhel76) 08/05/2019 _x86_64_ (1 CPU) avg-cpu: %user %nice %system %io...
find [搜索范围] [匹配条件] 选项 功能 -name<�查询方式> 按照指定的文件名查找模式查找文件 -user<�用户名> 查找属于指定用户名所有文件 常用实例 按文件名:根据名称查找/opt目录下的filename.txt文件。 find /opt/ -name filename.txt 按拥有者:查找/opt目录下,用户名称为userbdc的文件。 find /opt...
(1) General Commands Manual FIND(1) NAME find - search for files in a directory hierarchy SYNOPSIS find [-H] [-L] [-P] [-D debugopts] [-Olevel] [starting-point...] [expression] DESCRIPTION This manual page documents the GNU version of find. GNU find searches the directory tree roo...
worker = find_worker_executing_work(last_pool, work); if (worker && worker->current_pwq->wq == wq) { pwq = worker->current_pwq; } 最后work会加入到worker_pool的worklist链表,这时候work处于pengding状态,处于pending状态的work不会重复挂入workqueue,如果这时候所有worker都处于idle状态的话,那么就...
This is a symbolic link to the current working directory of the process. To find out the current working directory of process 20, for instance, you can do this: $ cd /proc/20/cwd; /bin/pwd Note that the pwd command is often a shell built-in, and might not work properly. In bash...
Linux Running State Process ".so"、"code" Injection Technology,Linux进程动态so注入技术 一、引言 从本质上来说,代码注入、so注入是操作系统自身提供的机制功能,是用于帮助系统管理员、软件开发人员进行debug调试目的的,但同时也可以被黑客、安全人员用于攻击、Hook防御等目的,可见,技术对抗本身就是双刃剑,攻防双方...
5.2 find 5.3 locate 5.4 whereis 5.5 which 六、su、sudo 6.1 su 6.2 sudo 七、系统服务 八、网络管理 8.1 主机名配置 8.2 IP 地址配置 8.3 域名映射 九、定时任务指令crontab 配置 9.1 命令格式 9.2 配置说明、实例 十、其他命令 10.1 查看当前目录:pwd ...
$ pstack9Could not attach to target9:Operation not permitted.detach:No such process 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. $ cat/proc/9/stack[<0>]smpboot_thread_fn+0x166/0x170[<0>]kthread+0x121/0x140[<0>]ret_from_fork+0x35/0x40[<0>]0xffffffffffffffff ...
These messages will likely be more difficult to view and review because on most systems you won’t find them in a single log file. Startup scripts usually print the messages to the console and they’re erased after the boot process finishes. However, this usually isn’t a problem because ...