phpor – 第21页 – PHPor 的Blog

bash 获取所有pid

for d in /proc/*;do [[ $d =~ /proc/[0-9]+ ]] && echo ${d#/proc/};done

1	for d in /proc/*;do [[ $d =~ /proc/[0-9]+ ]] && echo ${d#/proc/};done

ls 可以list /proc …

继续阅读“bash 获取所有pid”

count words in bash without wc

如何计算字符串中单词的数量，但是不使用wc？ eg： [crayon-68462338ac8338026386 …

继续阅读“count words in bash without wc”

cfree ( free in container)

#!/bin/bash
CGROUP_DIR=/sys/fs/cgroup/memory
UNLIMITTED=9223372036854771712

read mem_total <$CGROUP_DIR/memory.limit_in_bytes
read mem_used <$CGROUP_DIR/memory.usage_in_bytes
mem_free=$((mem_total - mem_used))

read mem_swap_total <$CGROUP_DIR/memory.memsw.limit_in_bytes
read mem_swap_used <$CGROUP_DIR/memory.memsw.usage_in_bytes
swap_total=$((mem_swap_total - mem_total))
swap_used=$((mem_swap_used - mem_used))
swap_free=$((swap_total - swap_used))

if [[ $mem_total = "9223372036854771712" ]];then
	/usr/bin/free -h && exit
fi

printf "%20s%20s%20s\n" total used free
printf "Mem:%16s%20s%20s\n"  $((mem_total/1024/1024))M $((mem_used/1024/1024))M $((mem_free/1024/1024))M
printf "Swap:%15s%20s%20s\n"  $((swap_total/1024/1024))M $((swap_used/1024/1024))M $((swap_free/1024/1024))M

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

#!/bin/bash

CGROUP_DIR=/sys/fs/cgroup/memory

UNLIMITTED=9223372036854771712

read mem_total <$CGROUP_DIR/memory.limit_in_bytes

read mem_used <$CGROUP_DIR/memory.usage_in_bytes

mem_free=$((mem_total - mem_used))

read mem_swap_total <$CGROUP_DIR/memory.memsw.limit_in_bytes

read mem_swap_used <$CGROUP_DIR/memory.memsw.usage_in_bytes

swap_total=$((mem_swap_total - mem_total))

swap_used=$((mem_swap_used - mem_used))

swap_free=$((swap_total - swap_used))

if [[ $mem_total = "9223372036854771712" ]];then

/usr/bin/free -h && exit

fi

printf "%20s%20s%20s\n" total used free

printf "Mem:%16s%20s%20s\n" $((mem_total/1024/1024))M $((mem_used/1024/1024))M $((mem_free/1024/1024))M

printf "Swap:%15s%20s%20s\n" $((swap_total/1024/1024))M $((swap_used/1024/1024))M $((swap_free/1024/1024))M

cfdisk – 基于 cursed的图形版磁盘分区工具

cfdisk is a curses-based program for partitioning any h …

继续阅读“cfdisk – 基于 cursed的图形版磁盘分区工具”

阿里云oss 之 ossfs

缘起阿里云OSS比云硬盘要便宜很多，而且阿里云提供一个叫做ossfs的工具，可以将OSS挂载成本地文件系统， …

继续阅读“阿里云oss 之 ossfs”

Docker 的插件式设计 – 奋斗1984 – 博客园

https://www.cnblogs.com/zhengah/p/5889340.html socat做Un …

继续阅读“Docker 的插件式设计 – 奋斗1984 – 博客园”

Powershell之GUI

Hello world: 解说：先加载程序集 New-Object ShowDialog 参考： https …

继续阅读“Powershell之GUI”

关于Mysql 索引

索引滥用表索引情况如下：我们发现，buss_no 开头的索引就有三个，从名字上 …

继续阅读“关于Mysql 索引”

4 ways to send output to NULL in PowerShell – Geekeefy

https://geekeefy.wordpress.com/2017/10/07/4-ways-to-sen …

继续阅读“4 ways to send output to NULL in PowerShell – Geekeefy”

又见十年前的bug

stat一个目录时卡死： (这个错误和十年前遇到的执行du就卡死的问题，如出一辙） dmesg 错误信息： & …

继续阅读“又见十年前的bug”