pid

Determine programmatically if a program is running

不打扰是莪最后的温柔 提交于 2019-12-28 04:50:12
问题 In C, how can I find out programmatically if a process is already running on Linux/Ubuntu to avoid having it start twice? I'm looking for something similar to pidof. 回答1: You can walk the pid entries in /proc and check for your process in either the cmdline file or perform a readlink on the exe link (The following uses the first method). #include <stdlib.h> #include <stdio.h> #include <string.h> #include <unistd.h> #include <dirent.h> #include <sys/types.h> pid_t proc_find(const char* name) {

linux端口号与PID的互相查询

十年热恋 提交于 2019-12-28 02:42:37
1、根据进程名称查询进程PID及进程信息 # ps -ef|grep tomcat_insure_service 2、根据进程PID查询进程名称信息 # ps -ef|grep 14752 3、根据进程PID查询端口 # netstat -ltnp | grep 14752 4、根据端口号查询进程PID # netstat -ltnp | grep 8091 来源: CSDN 作者: 春风化作秋雨 链接: https://blog.csdn.net/jiahao1186/article/details/103734346

Can someone explain the structure of a Pid in Erlang?

孤者浪人 提交于 2019-12-27 16:42:49
问题 Can someone explain the structure of a Pid in Erlang? Pids looks like this : <A.B.C> , e.g. <0.30.0> , but i would like to know what is the meaning of these three "bits" : A, B and C. 'A' seems to be always 0 on a local node, but this value changes when the Pid's owner is located on another node. Is it possible to directly send a message on a remote node using only the Pid ? Something like that : <4568.30.0> ! Message , without having to explicitely specify the name of the registered process

Can someone explain the structure of a Pid in Erlang?

丶灬走出姿态 提交于 2019-12-27 16:40:38
问题 Can someone explain the structure of a Pid in Erlang? Pids looks like this : <A.B.C> , e.g. <0.30.0> , but i would like to know what is the meaning of these three "bits" : A, B and C. 'A' seems to be always 0 on a local node, but this value changes when the Pid's owner is located on another node. Is it possible to directly send a message on a remote node using only the Pid ? Something like that : <4568.30.0> ! Message , without having to explicitely specify the name of the registered process

IIS网站启动提示文件另在使用的解决方式

孤街浪徒 提交于 2019-12-26 07:16:15
用管理员身份运行cmd命令窗口,输入netstat -aon ->d:/port80.txt(DOS中将显示结果定向到一个文件里)。然后到d盘port80.txt文件中找到占用80端口的程序pid,记 下pid。打开任务管理器,点击“查看”/选择列,勾选“PID(进程标识符)”,然后单击“进程”标签,找到80端口对应的pid,就可以看到是那个程 序占用的了,更改这个程序的port(端口),再重启这个程序,使更改生效。再次启动IIS。 如果是serv-u服务器端,占用80和443端口。版本v15的,在域详细信息---》监听器里,修改或删除80 http和443 https的监听。 来源: CSDN 作者: hezudao25 链接: https://blog.csdn.net/hezudao25/article/details/103698597

php无限极分类

守給你的承諾、 提交于 2019-12-25 19:01:46
1 $arr = array( 2 0=>array( 3 'cid'=>1, 4 'pid'=>0, 5 'name'=>'亚洲', 6 ), 7 1=>array( 8 'cid'=>2, 9 'pid'=>0, 10 'name'=>'北美洲', 11 ), 12 2=>array( 13 'cid'=>3, 14 'pid'=>1, 15 'name'=>'中国', 16 ), 17 3=>array( 18 'cid'=>4, 19 'pid'=>2, 20 'name'=>'美国', 21 ), 22 4=>array( 23 'cid'=>5, 24 'pid'=>3, 25 'name'=>'北京', 26 ), 27 5=>array( 28 'cid'=>6, 29 'pid'=>3, 30 'name'=>'河北', 31 ), 32 6=>array( 33 'cid'=>7, 34 'pid'=>5, 35 'name'=>'东城区', 36 ), 37 7=>array( 38 'cid'=>8, 39 'pid'=>5, 40 'name'=>'海淀区', 41 ), 42 ); 1 private function GetTree($arr,$pid,$step){ 2 global $tree; 3 foreach($arr as $key=>

PHP实现菜单无限极分类

我的未来我决定 提交于 2019-12-25 19:01:26
菜单数据 这里我们的菜单数据是临时数据, 没有从数据库中查询处理,数据基本和数据库中的的相似. 数据如下: $items = array( 1 => array('id' => 1, 'pid' => 0, 'name' => '安徽省'), 2 => array('id' => 2, 'pid' => 0, 'name' => '浙江省'), 3 => array('id' => 3, 'pid' => 1, 'name' => '合肥市'), 4 => array('id' => 4, 'pid' => 3, 'name' => '长丰县'), 6 => array('id' => 6, 'pid' => 4, 'name' => '小溪村'), 5 => array('id' => 5, 'pid' => 1, 'name' => '安庆市'), ); 这里的数据,也是更改为从数据库查询出来的真实数据. 创建一个菜单无限极分类方法 function generateTree($list, $pk = 'id', $pid = 'pid', $child = '_child', $root = 0) { $tree = array(); $packData = array(); foreach ($list as $data) { $packData[$data[$pk]] =

sql存储过程删除无限极分类

拈花ヽ惹草 提交于 2019-12-25 18:59:22
create procedure pro_delete @deleteId int as declare @nodeid int declare @id int declare @pid int set @nodeid = @deleteId set @id = @nodeid set @pid = @nodeid begin transaction while(exists (select * from H where id = @nodeid)) begin if(exists (select * from H where Pid = @id and id != @id) ) begin set @pid = @id set @id = (select top 1 id from H where pid = @id and id != @id) end else begin print @id delete from H where id = @id set @id = @pid set @pid = (select top 1 pid from H where id = @pid) end end if(@@ERROR<>0) ROLLBACK TRANSACTION else commit transaction 来源: https://www.cnblogs.com

【转】PHP 无限级分类(递归)

ぐ巨炮叔叔 提交于 2019-12-25 18:55:46
$arr = array( array('id'=>1,'name'=>'电脑','pid'=>0), array('id'=>2,'name'=>'手机','pid'=>0), array('id'=>3,'name'=>'笔记本','pid'=>1), array('id'=>4,'name'=>'台式机','pid'=>1), array('id'=>5,'name'=>'智能机','pid'=>2), array('id'=>6,'name'=>'功能机','pid'=>2), array('id'=>7,'name'=>'超级本','pid'=>3), array('id'=>8,'name'=>'游戏本','pid'=>3), ); /** * @param $arr 数组 * @param $id id * @param $level 层级 * @return array */ function demo($arr,$id,$level) { $list =array(); foreach ($arr as $k=>$v){ if ($v['pid'] == $id){ $v['level']=$level; $v['son'] = demo($arr,$v['id'],$level+1); $list[] = $v; } } return $list; }

php递归无限极分类

ぐ巨炮叔叔 提交于 2019-12-25 18:53:54
递归无限级分类有几种形式,我这里仅仅举例比較经常使用的三种: 第一种:返回有排序的数组: <?php $data = array( 1 => array( 'id' => 1, 'pid' => 0, 'user_name' => 'one', ), 2 => array( 'id' => 2, 'pid' => 1, 'user_name' => 'two', ), 3 => array( 'id' => 3, 'pid' => 1, 'user_name' => 'two', ), 4 => array( 'id' => 4, 'pid' => 2, 'user_name' => 'three', ), 5 => array( 'id' => 5, 'pid' => 2, 'user_name' => 'three', ), 6 => array( 'id' => 6, 'pid' => 5, 'user_name' => 'four', ), ); function genCate( $data, $pid = 0, $level = 0 ) { static $result = array(); $result = ($level == 0) ? array() : $result; $prefix = ($level == 0) ? '' : str_repeat( '-