文章目录
- linux_status_process/threads_checker:htop&ps&glances内核信息/进程信息/线程信息/硬件信息查看
- 查看发行版和内核版本号相关主题命令
- 查看自己的发行版以及版本号(系统自带工具查看)
- 内核号
- 发行版相关主题
- 内核版本相关主题(optional)
- 其他工具包
- 系统信息查看
- 动态信息查看(进程/网络/ip)
- 综合系统状态信息glances
- 动态进程/线程查看/管理工具htop
- 安装和使用htop
- 查看线程
- hotp: Threads Using htop
- ps -L 查看线程
linux_status_process/threads_checker:htop&ps&glances内核信息/进程信息/线程信息/硬件信息查看
查看发行版和内核版本号相关主题命令
查看自己的发行版以及版本号(系统自带工具查看)
第一种为通用方法
-
cat /etc/issue -
lsb_release -a
cxxu@iZ2zef3tpqffm5ydjqi4zsZ:/etc/apt$ cat /etc/issue
Ubuntu 18.04.6 LTS \n \l
cxxu@iZ2zef3tpqffm5ydjqi4zsZ:/etc/apt$ lsb_release -a
LSB Version: core-9.20170808ubuntu1-noarch:security-9.20170808ubuntu1-noarch
Distributor ID: Ubuntu
Description: Ubuntu 18.04.6 LTS
Release: 18.04
Codename: bionic内核号
-
uname -a -
cat /proc/version
cat /proc/version
Linux version 4.15.0-169-generic (buildd@lcy02-amd64-015) (gcc version 7.5.0 (Ubuntu 7.5.0-3ubuntu1~18.04)) #177-Ubuntu SMP Thu Feb 3 10:50:38 UTC 2022发行版相关主题
$ apropos distribution
debian-distro-info (1) - provides information about Debian's distributions
distro-info (1) - provides information about the distributions' releases
dpkg-vendor (1) - queries information about distribution vendors
iptables-extensions (8) - list of extensions in the standard iptables distribution
lsb_release (1) - print distribution-specific information
ubuntu-distro-info (1) - provides information about Ubuntu's distributions
# cxxu @ cxxuAli in ~ [19:21:03]
$ apropos distribution |grep information
debian-distro-info (1) - provides information about Debian's distributions
distro-info (1) - provides information about the distributions' releases
dpkg-vendor (1) - queries information about distribution vendors
lsb_release (1) - print distribution-specific information
ubuntu-distro-info (1) - provides information about Ubuntu's distributions内核版本相关主题(optional)
# cxxu @ cxxuAli in ~ [19:08:31]
$ apropos kernel|grep version
linux-version (1) - operate on Linux kernel version strings
# cxxu @ cxxuAli in ~ [19:15:16] C:16
$ whatis uname
uname (1) - print system information
uname (2) - get name and information about current kernel其他工具包
系统信息查看
-
sudo apt install neofetch
动态信息查看(进程/网络/ip)
综合系统状态信息glances
-
sudo apt install glances
动态进程/线程查看/管理工具htop
安装和使用htop
-
sudo apt install htop - 获取帮助(输入
h)
空格分割等效按键
- 例如,
-
F6 -
> -
.
- 效果一样(选择列排序)
查看线程
- htop & ps | Baeldung on Linux
htop显示的进程数量更多(htop会将线程一并显示!)
- It turns out that bothhtop and ps read the details about the number of the running processes and threads from the /proc filesystem.
- More specifically, the/proc/directory and the subdirectories/proc//task/found underneath.
- Let’s list and count the subdirectories under/proc//task/, replacing with the running MariaDB Server PID:
- Why Does htop Show More Processes Than ps | Baeldung on Linux
# cxxu @ cxxuAli in ~ [9:22:49]
$ ls /proc/$(pidof mysqld)/task
10749 14460 1553 1563 1571 1577 1582 1600 1604 2049 24547 30455
10750 1537 1554 1564 1572 1578 1583 1601 1605 2088 27182
12323 1551 1557 1565 1573 1579 1598 1602 1607 22668 27187
12407 1552 1562 1566 1576 1581 1599 1603 1608 23739 27938
# cxxu @ cxxuAli in ~ [9:22:50]
$ ls -1 /proc/$(pidof mysqld)/task | wc -l
45
We deduce from the above output that, unlike *ps*, the *htop* command displays the running processes and their corresponding individual threads by default.
htop was designed to provide as much information as possible about what’s going on in the system. As a result, it displays the user threads instead of hiding them. For example, system administrators can spot a problem in a multithreaded application while monitoring the CPU usage of its related threads. Yet, some Linux users prefer to disable this setting as they find it less useful to show all the threads in the htop output.
hotp: Threads Using htop
In Linux, we have user-space and kernel-space threads. The user threads are associated with a user application, and the kernel threads are created and managed by the OS.
htop, by default, displays the user threads and hides the kernel threads**. Next, let’s check how we can modify this behavior.
ps -L 查看线程
UID PID PPID LWP C NLWP STIME TTY TIME CMD
┌─[cxxu@cxxuAli] - [~] - [2022-04-29 10:23:13]
└─[1] <> ps -fL -C mysqld
UID PID PPID LWP C NLWP STIME TTY TIME CMD
mysql 1537 757 1537 0 45 Apr11 ? 00:00:00 /www/server/mysql/bin/mysqld --basedir=/www/server/mysql --datadir=/www/server/data --plugin-dir=/www/server/mysql/lib/plugin --
mysql 1537 757 1551 0 45 Apr11 ? 00:00:00 /www/server/mysql/bin/mysqld --basedir=/www/server/mysql --datadir=/www/server/data --plugin-dir=/www/server/mysql/lib/plugin --
mysql 1537 757 1552 0 45 Apr11 ? 00:00:00 /www/server/mysql/bin/mysqld --basedir=/www/server/mysql --datadir=/www/server/data --plugin-dir=/www/server/mysql/lib/plugin --
mysql 1537 757 1553 0 45 Apr11 ? 00:00:00 /www/server/mysql/bin/mysqld --basedir=/www/server/mysql --datadir=/www/server/data --plugin-dir=/www/server/mysql/lib/plugin --
mysql 1537 757 1554 0 45 Apr11 ? 00:00:00 /www/server/mysql/bin/mysqld --basedir=/www/server/mysql --datadir=/www/server/data --plugin-dir=/www/server/mysql/lib/plugin --
mysql 1537 757 1557 0 45 Apr11 ? 00:00:31 /www/server/mysql/bin/mysqld --basedir=/www/server/mysql --datadir=/www/server/data --plugin-dir=/www/server/mysql/lib/plugin --
mysql 1537 757 1562 0 45 Apr11 ? 00:00:21 /www/server/mysql/bin/mysqld --basedir=/www/server/mysql --datadir=/www/server/data --plugin-dir=/www/server/mysql/lib/plugin --
mysql 1537 757 1563 0 45 Apr11 ? 00:02:04 /www/server/mysql/bin/mysqld --basedir=/www/server/mysql --datadir=/www/server/data --plugin-dir=/www/server/mysql/lib/plugin --
mysql 1537 757 1564 0 45 Apr11 ? 00:02:04 /www/server/mysql/bin/mysqld --basedir=/www/server/mysql --datadir=/www/server/data --plugin-dir=/www/server/mysql/lib/plugin --
mysql 1537 757 1565 0 45 Apr11 ? 00:02:11 /www/server/mysql/bin/mysqld --basedir=/www/server/mysql --datadir=/www/server/data --plugin-dir=/www/server/mysql/lib/plugin --- 可以搭配
|grep使用
-
ps -C 不支持通配符
