管理Linux软件包和进程

目录

一、思维导图

二、RPM软件管理

1、通过rpm安装vsftpd软件

2、查询vsftpd软件包的信息

3、卸载软件包vsftpd

三、YUM软件管理

1、挂载本地光盘,配置yum源为rhel8.repo

2、通过yum来安装httpd

3、使用yum查询ifconfig命令是由那个软件包提供的

4、卸载软件包httpd

四、源码管理

下载tree源码包并编译安装

五、进程管理 

1、通过ps命令的两种选项形式查看进程信息

2、通过pgrep和pidof命令查看sshd服务的进程号

3、使dd if=/dev/zero of=/root/file bs=1M count=8190 命令操作在前台运行

4、将上题操作调入到后台并暂停

5、使dd if=/dev/zero of=/root/file2 bs=1M count=1024 命令操作在后台运行

6、查看后台的任务列表

7、恢复dd if=/dev/zero of=/root/file bs=1M count=8190 让其在后台继续运行

8、查询dd if=/dev/zero of=/root/file bs=1M count=8190 命令的进程并通过kill杀死


一、思维导图

管理Linux软件包和进程_第1张图片

管理Linux软件包和进程_第2张图片

二、RPM软件管理

1、通过rpm安装vsftpd软件

[root@localhost AppStream]# rpm -ivh Packages/vsftpd-3.0.3-34.el8.x86_64.rpm
warning: Packages/vsftpd-3.0.3-34.el8.x86_64.rpm: Header V3 RSA/SHA256 Signature, key ID fd431d51: NOKEY
Verifying...                          ################################# [100%]
Preparing...                          ################################# [100%]
Updating / installing...
   1:vsftpd-3.0.3-34.el8              ################################# [100%]

2、查询vsftpd软件包的信息

[root@localhost ~]# rpm -qi vsftpd
Name        : vsftpd
Version     : 3.0.3
Release     : 34.el8
Architecture: x86_64
Install Date: Sat 05 Nov 2022 09:44:46 PM CST
Group       : System Environment/Daemons
Size        : 355692
License     : GPLv2 with exceptions
Signature   : RSA/SHA256, Wed 21 Apr 2021 08:42:12 PM CST, Key ID 199e2f91fd431d51
Source RPM  : vsftpd-3.0.3-34.el8.src.rpm
Build Date  : Tue 20 Apr 2021 10:28:24 PM CST
Build Host  : x86-vm-15.build.eng.bos.redhat.com
Relocations : (not relocatable)
Packager    : Red Hat, Inc. 
Vendor      : Red Hat, Inc.
URL         : https://security.appspot.com/vsftpd.html
Summary     : Very Secure Ftp Daemon
Description :
vsftpd is a Very Secure FTP daemon. It was written completely from
scratch.

3、卸载软件包vsftpd

[root@localhost AppStream]# rpm -e vsftpd

三、YUM软件管理

1、挂载本地光盘,配置yum源为rhel8.repo

[root@localhost ~]# mkdir /test/cdrom
[root@localhost ~]# mount /dev/sr0 /test/cdrom
mount: /test/cdrom: WARNING: device write-protected, mounted read-only.
[root@localhost cdrom]# cat /etc/yum.repos.d/rhel8.repo
name=RHEL8-BaseOS
baseurl=file:///media/cdrom/BaseOS
gpgcheck=0
#gpgcheck=1 #如果gpgcheck为1,需要写秘钥文件路径
#gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-rockyofficial
[RHEL8-Appstream]
name=RHEL8-Appstream
baseurl=file:///media/cdrom/AppStream
gpgcheck=0
#gpgcheck=1
#gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-rockyofficial

[root@localhost cdrom]# yum install bind -y
Updating Subscription Management repositories.
Unable to read consumer identity

This system is not registered with an entitlement server. You can use subscription-manager to register.

Warning: failed loading '/etc/yum.repos.d/rhel8.repo', skipping.
Last metadata expiration check: 0:27:44 ago on Sat 05 Nov 2022 09:35:22 PM CST.
Dependencies resolved.
==============================================================================================================================
 Package                  Architecture               Version                              Repository                     Size
==============================================================================================================================
Installing:
 bind                     x86_64                     32:9.11.26-6.el8                     Appstream                     2.1 M

Transaction Summary
==============================================================================================================================
Install  1 Package

Total size: 2.1 M
Installed size: 4.5 M
Downloading Packages:
Running transaction check
Transaction check succeeded.
Running transaction test
Transaction test succeeded.
Running transaction
  Preparing        :                                                                                                      1/1
  Running scriptlet: bind-32:9.11.26-6.el8.x86_64                                                                         1/1
  Installing       : bind-32:9.11.26-6.el8.x86_64                                                                         1/1
  Running scriptlet: bind-32:9.11.26-6.el8.x86_64                                                                         1/1
  Verifying        : bind-32:9.11.26-6.el8.x86_64                                                                         1/1
Installed products updated.

Installed:
  bind-32:9.11.26-6.el8.x86_64

Complete!

[root@localhost ~]# cd /etc/yum.repos.d/
[root@localhost yum.repos.d]# ll
total 12
-rw-r--r--. 1 root root 146 Oct 24 18:36 base.repo
-rw-r--r--. 1 root root 358 Oct 22 21:30 redhat.repo
-rw-r--r--. 1 root root 342 Oct 31 18:35 rhel8.repo

2、通过yum来安装httpd

[root@localhost yum.repos.d]# yum -y install httpd
Updating Subscription Management repositories.
Unable to read consumer identity

This system is not registered with an entitlement server. You can use subscription-manager to register.

Warning: failed loading '/etc/yum.repos.d/rhel8.repo', skipping.
AppStream                                                                                     8.9 MB/s | 8.4 MB     00:00
BaseOS                                                                                        7.2 MB/s | 4.6 MB     00:00
Last metadata expiration check: 0:00:02 ago on Sat 05 Nov 2022 10:14:22 PM CST.
Package httpd-2.4.37-41.module+el8.5.0+11772+c8e0c271.x86_64 is already installed.
Dependencies resolved.
==============================================================================================================================
 Package                   Architecture    Version                                            Repository                 Size
==============================================================================================================================
Upgrading:
 httpd                     x86_64          2.4.37-43.module_el8.5.0+1022+b541f3b1             aliyun-AppStream          1.4 M
 httpd-filesystem          noarch          2.4.37-43.module_el8.5.0+1022+b541f3b1             aliyun-AppStream           39 k
 httpd-tools               x86_64          2.4.37-43.module_el8.5.0+1022+b541f3b1             aliyun-AppStream          107 k

Transaction Summary
==============================================================================================================================
Upgrade  3 Packages

Total download size: 1.5 M
Downloading Packages:
(1/3): httpd-tools-2.4.37-43.module_el8.5.0+1022+b541f3b1.x86_64.rpm                          654 kB/s | 107 kB     00:00
(2/3): httpd-filesystem-2.4.37-43.module_el8.5.0+1022+b541f3b1.noarch.rpm                     194 kB/s |  39 kB     00:00
(3/3): httpd-2.4.37-43.module_el8.5.0+1022+b541f3b1.x86_64.rpm                                5.4 MB/s | 1.4 MB     00:00
------------------------------------------------------------------------------------------------------------------------------
Total                                                                                         5.8 MB/s | 1.5 MB     00:00
Running transaction check
Transaction check succeeded.
Running transaction test
Transaction test succeeded.
Running transaction
  Preparing        :                                                                                                      1/1
  Running scriptlet: httpd-tools-2.4.37-43.module_el8.5.0+1022+b541f3b1.x86_64                                            1/1
  Upgrading        : httpd-tools-2.4.37-43.module_el8.5.0+1022+b541f3b1.x86_64                                            1/6
  Running scriptlet: httpd-filesystem-2.4.37-43.module_el8.5.0+1022+b541f3b1.noarch                                       2/6
  Upgrading        : httpd-filesystem-2.4.37-43.module_el8.5.0+1022+b541f3b1.noarch                                       2/6
  Upgrading        : httpd-2.4.37-43.module_el8.5.0+1022+b541f3b1.x86_64                                                  3/6
  Running scriptlet: httpd-2.4.37-43.module_el8.5.0+1022+b541f3b1.x86_64                                                  3/6
  Running scriptlet: httpd-2.4.37-41.module+el8.5.0+11772+c8e0c271.x86_64                                                 4/6
  Cleanup          : httpd-2.4.37-41.module+el8.5.0+11772+c8e0c271.x86_64                                                 4/6
  Running scriptlet: httpd-2.4.37-41.module+el8.5.0+11772+c8e0c271.x86_64                                                 4/6
  Cleanup          : httpd-filesystem-2.4.37-41.module+el8.5.0+11772+c8e0c271.noarch                                      5/6
  Cleanup          : httpd-tools-2.4.37-41.module+el8.5.0+11772+c8e0c271.x86_64                                           6/6
  Running scriptlet: httpd-2.4.37-43.module_el8.5.0+1022+b541f3b1.x86_64                                                  6/6
  Running scriptlet: httpd-tools-2.4.37-41.module+el8.5.0+11772+c8e0c271.x86_64                                           6/6
  Verifying        : httpd-2.4.37-43.module_el8.5.0+1022+b541f3b1.x86_64                                                  1/6
  Verifying        : httpd-2.4.37-41.module+el8.5.0+11772+c8e0c271.x86_64                                                 2/6
  Verifying        : httpd-filesystem-2.4.37-43.module_el8.5.0+1022+b541f3b1.noarch                                       3/6
  Verifying        : httpd-filesystem-2.4.37-41.module+el8.5.0+11772+c8e0c271.noarch                                      4/6
  Verifying        : httpd-tools-2.4.37-43.module_el8.5.0+1022+b541f3b1.x86_64                                            5/6
  Verifying        : httpd-tools-2.4.37-41.module+el8.5.0+11772+c8e0c271.x86_64                                           6/6
Installed products updated.

Upgraded:
  httpd-2.4.37-43.module_el8.5.0+1022+b541f3b1.x86_64         httpd-filesystem-2.4.37-43.module_el8.5.0+1022+b541f3b1.noarch
  httpd-tools-2.4.37-43.module_el8.5.0+1022+b541f3b1.x86_64

Complete!

3、使用yum查询ifconfig命令是由那个软件包提供的

[root@localhost ~]# yum whatprovides ifconfig
Updating Subscription Management repositories.
Unable to read consumer identity

This system is not registered with an entitlement server. You can use subscription-manager to register.

Warning: failed loading '/etc/yum.repos.d/rhel8.repo', skipping.
Last metadata expiration check: 0:02:42 ago on Sat 05 Nov 2022 10:14:22 PM CST.
net-tools-2.0-0.52.20160912git.el8.x86_64 : Basic networking tools
Repo        : @System
Matched from:
Filename    : /usr/sbin/ifconfig

net-tools-2.0-0.52.20160912git.el8.x86_64 : Basic networking tools
Repo        : aliyun-BaseOS
Matched from:
Filename    : /usr/sbin/ifconfig

net-tools-2.0-0.52.20160912git.el8.x86_64 : Basic networking tools
Repo        : BaseOS
Matched from:
Filename    : /usr/sbin/ifconfig

4、卸载软件包httpd

[root@localhost ~]# yum remove -y httpd
Updating Subscription Management repositories.
Unable to read consumer identity

This system is not registered with an entitlement server. You can use subscription-manager to register.

Warning: failed loading '/etc/yum.repos.d/rhel8.repo', skipping.
Dependencies resolved.
==============================================================================================================================
 Package                     Architecture    Version                                         Repository                  Size
==============================================================================================================================
Removing:
 httpd                       x86_64          2.4.37-43.module_el8.5.0+1022+b541f3b1          @aliyun-AppStream          4.3 M
Removing unused dependencies:
 apr                         x86_64          1.6.3-12.el8                                    @Appstream                 272 k
 apr-util                    x86_64          1.6.1-6.el8                                     @Appstream                 230 k
 apr-util-bdb                x86_64          1.6.1-6.el8                                     @Appstream                  12 k
 apr-util-openssl            x86_64          1.6.1-6.el8                                     @Appstream                  20 k
 httpd-filesystem            noarch          2.4.37-43.module_el8.5.0+1022+b541f3b1          @aliyun-AppStream          400
 httpd-tools                 x86_64          2.4.37-43.module_el8.5.0+1022+b541f3b1          @aliyun-AppStream          193 k
 mod_http2                   x86_64          1.15.7-3.module+el8.4.0+8625+d397f3da           @Appstream                 394 k
 redhat-logos-httpd          noarch          84.5-1.el8                                      @BaseOS                    8.2 k

Transaction Summary
==============================================================================================================================
Remove  9 Packages

Freed space: 5.4 M
Running transaction check
Transaction check succeeded.
Running transaction test
Transaction test succeeded.
Running transaction
  Preparing        :                                                                                                      1/1
  Running scriptlet: httpd-2.4.37-43.module_el8.5.0+1022+b541f3b1.x86_64                                                  1/1
  Running scriptlet: httpd-2.4.37-43.module_el8.5.0+1022+b541f3b1.x86_64                                                  1/9
  Erasing          : httpd-2.4.37-43.module_el8.5.0+1022+b541f3b1.x86_64                                                  1/9
  Running scriptlet: httpd-2.4.37-43.module_el8.5.0+1022+b541f3b1.x86_64                                                  1/9
  Erasing          : httpd-filesystem-2.4.37-43.module_el8.5.0+1022+b541f3b1.noarch                                       2/9
  Running scriptlet: httpd-filesystem-2.4.37-43.module_el8.5.0+1022+b541f3b1.noarch                                       2/9
  Erasing          : redhat-logos-httpd-84.5-1.el8.noarch                                                                 3/9
  Erasing          : httpd-tools-2.4.37-43.module_el8.5.0+1022+b541f3b1.x86_64                                            4/9
  Erasing          : apr-util-1.6.1-6.el8.x86_64                                                                          5/9
  Running scriptlet: apr-util-1.6.1-6.el8.x86_64                                                                          5/9
  Erasing          : apr-1.6.3-12.el8.x86_64                                                                              6/9
  Running scriptlet: apr-1.6.3-12.el8.x86_64                                                                              6/9
  Erasing          : apr-util-bdb-1.6.1-6.el8.x86_64                                                                      7/9
  Erasing          : apr-util-openssl-1.6.1-6.el8.x86_64                                                                  8/9
  Erasing          : mod_http2-1.15.7-3.module+el8.4.0+8625+d397f3da.x86_64                                               9/9
  Running scriptlet: mod_http2-1.15.7-3.module+el8.4.0+8625+d397f3da.x86_64                                               9/9
  Verifying        : apr-1.6.3-12.el8.x86_64                                                                              1/9
  Verifying        : apr-util-1.6.1-6.el8.x86_64                                                                          2/9
  Verifying        : apr-util-bdb-1.6.1-6.el8.x86_64                                                                      3/9
  Verifying        : apr-util-openssl-1.6.1-6.el8.x86_64                                                                  4/9
  Verifying        : httpd-2.4.37-43.module_el8.5.0+1022+b541f3b1.x86_64                                                  5/9
  Verifying        : httpd-filesystem-2.4.37-43.module_el8.5.0+1022+b541f3b1.noarch                                       6/9
  Verifying        : httpd-tools-2.4.37-43.module_el8.5.0+1022+b541f3b1.x86_64                                            7/9
  Verifying        : mod_http2-1.15.7-3.module+el8.4.0+8625+d397f3da.x86_64                                               8/9
  Verifying        : redhat-logos-httpd-84.5-1.el8.noarch                                                                 9/9
Installed products updated.

Removed:
  apr-1.6.3-12.el8.x86_64                                     apr-util-1.6.1-6.el8.x86_64
  apr-util-bdb-1.6.1-6.el8.x86_64                             apr-util-openssl-1.6.1-6.el8.x86_64
  httpd-2.4.37-43.module_el8.5.0+1022+b541f3b1.x86_64         httpd-filesystem-2.4.37-43.module_el8.5.0+1022+b541f3b1.noarch
  httpd-tools-2.4.37-43.module_el8.5.0+1022+b541f3b1.x86_64   mod_http2-1.15.7-3.module+el8.4.0+8625+d397f3da.x86_64
  redhat-logos-httpd-84.5-1.el8.noarch

Complete!

四、源码管理

下载tree源码包并编译安装

五、进程管理 

1、通过ps命令的两种选项形式查看进程信息

[root@localhost ~]# ps -a
    PID TTY          TIME CMD
   2207 tty2     00:00:00 Xorg
   2241 tty2     00:00:00 gnome-session-b
   2333 tty2     00:00:08 gnome-shell
   2348 tty2     00:00:00 ibus-daemon
   2352 tty2     00:00:00 ibus-dconf
   2353 tty2     00:00:02 ibus-extension-
   2358 tty2     00:00:00 ibus-x11
   2435 tty2     00:00:00 gsd-power
   2436 tty2     00:00:00 gsd-print-notif
   2439 tty2     00:00:00 gsd-rfkill
   2441 tty2     00:00:00 gsd-screensaver
   2444 tty2     00:00:00 gsd-sharing
   2449 tty2     00:00:00 gsd-sound
   2451 tty2     00:00:00 gsd-xsettings
   2460 tty2     00:00:00 gsd-wacom
   2463 tty2     00:00:00 gsd-smartcard
   2464 tty2     00:00:00 gsd-account
   2472 tty2     00:00:00 gsd-subman
   2479 tty2     00:00:00 gsd-a11y-settin
   2483 tty2     00:00:00 gsd-clipboard
   2493 tty2     00:00:00 gsd-color
   2495 tty2     00:00:00 gsd-datetime
   2496 tty2     00:00:00 gsd-housekeepin
   2500 tty2     00:00:00 gsd-keyboard
   2504 tty2     00:00:00 gsd-media-keys
   2509 tty2     00:00:00 gsd-mouse
   2570 tty2     00:00:00 ibus-engine-sim
   2588 tty2     00:00:06 vmtoolsd
   2589 tty2     00:00:00 gsd-disk-utilit
   2597 tty2     00:00:00 gsd-printer
   2600 tty2     00:00:01 gnome-software
   2612 tty2     00:00:00 tracker-miner-a
   2616 tty2     00:00:00 tracker-miner-f
   2829 pts/0    00:00:00 dbus-launch
   6019 pts/0    00:00:00 ps
[root@localhost ~]# ps -u
USER         PID %CPU %MEM    VSZ   RSS TTY      STAT START   TIME COMMAND
root        2205  0.0  0.4 235084  8392 tty2     Ssl+ 20:38   0:00 /usr/libexec/gdm-x-session --register-session --run-script
root        2207  0.0  3.7 445864 68072 tty2     Sl+  20:38   0:00 /usr/libexec/Xorg vt2 -displayfd 3 -auth /run/user/0/gdm/Xa
root        2241  0.0  1.0 732564 18612 tty2     Sl+  20:38   0:00 /usr/libexec/gnome-session-binary --session gnome-classic
root        2333  0.1  9.1 2623888 167800 tty2   Sl+  20:38   0:08 /usr/bin/gnome-shell
root        2348  0.0  0.6 391212 12760 tty2     Sl   20:38   0:00 ibus-daemon --xim --panel disable
root        2352  0.0  0.4 302916  8124 tty2     Sl   20:38   0:00 /usr/libexec/ibus-dconf
root        2353  0.0  1.5 456904 28956 tty2     Sl   20:38   0:02 /usr/libexec/ibus-extension-gtk3
root        2358  0.0  1.3 373912 24144 tty2     Sl   20:38   0:00 /usr/libexec/ibus-x11 --kill-daemon
root        2435  0.0  1.3 623904 25500 tty2     Sl+  20:39   0:00 /usr/libexec/gsd-power
root        2436  0.0  0.6 364780 11996 tty2     Sl+  20:39   0:00 /usr/libexec/gsd-print-notifications
root        2439  0.0  0.5 451584  9888 tty2     Sl+  20:39   0:00 /usr/libexec/gsd-rfkill
root        2441  0.0  0.3 299368  7204 tty2     Sl+  20:39   0:00 /usr/libexec/gsd-screensaver-proxy
root        2444  0.0  0.4 455512  8872 tty2     Sl+  20:39   0:00 /usr/libexec/gsd-sharing
root        2449  0.0  0.6 367316 12560 tty2     Sl+  20:39   0:00 /usr/libexec/gsd-sound
root        2451  0.0  1.3 524252 25068 tty2     Sl+  20:39   0:00 /usr/libexec/gsd-xsettings
root        2460  0.0  1.3 454300 23940 tty2     Sl+  20:39   0:00 /usr/libexec/gsd-wacom
root        2463  0.0  0.6 474620 12188 tty2     Sl+  20:39   0:00 /usr/libexec/gsd-smartcard
root        2464  0.0  0.4 382120  8696 tty2     Sl+  20:39   0:00 /usr/libexec/gsd-account
root        2472  0.0  1.3 451572 23912 tty2     Sl+  20:39   0:00 /usr/libexec/gsd-subman
root        2479  0.0  0.4 301624  8220 tty2     Sl+  20:39   0:00 /usr/libexec/gsd-a11y-settings
root        2483  0.0  1.2 373476 23300 tty2     Sl+  20:39   0:00 /usr/libexec/gsd-clipboard
root        2493  0.0  1.3 686992 25340 tty2     Sl+  20:39   0:00 /usr/libexec/gsd-color
root        2495  0.0  0.8 460020 15564 tty2     Sl+  20:39   0:00 /usr/libexec/gsd-datetime
root        2496  0.0  0.5 388700  9208 tty2     Sl+  20:39   0:00 /usr/libexec/gsd-housekeeping
root        2500  0.0  1.4 523228 25704 tty2     Sl+  20:39   0:00 /usr/libexec/gsd-keyboard
root        2504  0.0  1.5 1122720 27808 tty2    Sl+  20:39   0:00 /usr/libexec/gsd-media-keys
root        2509  0.0  0.5 301760 10344 tty2     Sl+  20:39   0:00 /usr/libexec/gsd-mouse
root        2570  0.0  0.4 229112  7956 tty2     Sl   20:39   0:00 /usr/libexec/ibus-engine-simple
root        2588  0.0  2.0 536464 38032 tty2     Sl+  20:39   0:06 /usr/bin/vmtoolsd -n vmusr
root        2589  0.0  0.4 301352  8888 tty2     Sl+  20:39   0:00 /usr/libexec/gsd-disk-utility-notify
root        2597  0.0  0.8 517768 14756 tty2     Sl+  20:39   0:00 /usr/libexec/gsd-printer
root        2600  0.0  3.8 1020552 70048 tty2    Sl+  20:39   0:01 /usr/bin/gnome-software --gapplication-service
root        2612  0.0  1.4 622896 25740 tty2     SNl+ 20:39   0:00 /usr/libexec/tracker-miner-apps
root        2616  0.0  1.4 640728 25956 tty2     SNl+ 20:39   0:00 /usr/libexec/tracker-miner-fs
root        2779  0.0  0.3  31272  5896 pts/0    Ss   20:39   0:00 -bash
root        2829  0.0  0.0  62976     0 pts/0    S    20:39   0:00 dbus-launch --sh-syntax --exit-with-x11
root        6020  0.0  0.2  58736  3908 pts/0    R+   22:30   0:00 ps -u

2、通过pgrep和pidof命令查看sshd服务的进程号

[root@localhost ~]# pgrep sshd
1091
2755
2772
2774
2778
[root@localhost ~]# pidof sshd
2778 2774 2772 2755 1091

3、使dd if=/dev/zero of=/root/file bs=1M count=8190 命令操作在前台运行

[root@localhost ~]# dd if=/dev/zero of=/root/file bs=1M count=8190
8190+0 records in
8190+0 records out
8587837440 bytes (8.6 GB, 8.0 GiB) copied, 16.1021 s, 533 MB/s

4、将上题操作调入到后台并暂停

[root@localhost ~]# dd if=/dev/zero of=/root/file bs=1M count=8190
^z
[1]+  Stopped                 dd if=/dev/zero of=/root/file bs=1M count=8190

5、使dd if=/dev/zero of=/root/file2 bs=1M count=1024 命令操作在后台运行

[root@localhost ~]# dd if=/dev/zero of=/root/file2 bs=1M count=1024 &
[2] 6258
[root@localhost ~]# 1024+0 records in
1024+0 records out
1073741824 bytes (1.1 GB, 1.0 GiB) copied, 1.6768 s, 640 MB/s

6、查看后台的任务列表

jobs -l
[1]+  6179 Stopped                 dd if=/dev/zero of=/root/file bs=1M count=8190
[2]-  6258 Done                    dd if=/dev/zero of=/root/file2 bs=1M count=1024

7、恢复dd if=/dev/zero of=/root/file bs=1M count=8190 让其在后台继续运行

[root@localhost ~]# bg %1
[1]+ dd if=/dev/zero of=/root/file bs=1M count=8190 &

8、查询dd if=/dev/zero of=/root/file bs=1M count=8190 命令的进程并通过kill杀死

[root@localhost ~]# dd if=/dev/zero of=/root/file bs=1M count=8190 &
[1] 6417
[root@localhost ~]# kill %1

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