Test and Development System Chapter-Common System Commands

The following introduces some commonly used commands in test work. Those not specifically marked are those under Linux and Mac systems.

View the process occupying the port

Linux

aaron@ubuntu:~$ lsof -i :8085 | grep LISTEN
___server 69080 aaron   11u  IPv6 0x5624b7cdebdb6b7b      0t0  TCP *:8085 (LISTEN)

Windows

C:>netstat -aon | findstr :80 | findstr LISTENING
  TCP    0.0.0.0:80             0.0.0.0:0              LISTENING       2588
  TCP    [::]:80                [::]:0                 LISTENING       2588

Kill process

Linux

aaron@ubuntu:~$ kill -9 69080

Windows

PS C:\WINDOWS\system32> taskkill /F /PID 8152
SUCCESS: The process with PID 8152 has been terminated.

If you have insufficient permissions under Windows, you can right-click the Start button to start PowerShell in administrator mode.

View process by name

aaron@ubuntu:~$ ps -ef | grep nginx | grep -v grep
root     21471     1  0  2020 ?        00:00:00 nginx: master process /usr/sbin/nginx -g daemon on; master_process on;
www-data 21472 21471  0  2020 ?        00:07:55 nginx: worker process

Use grep -v grep to filter out the viewing process itself.

Command line pipeline

aaron@ubuntu:~$ ps -ef | grep nginx | grep -v grep | awk '{print $2}' | xargs kill -9

The pipeline is used here to kill the process named nginx.

• Use the pipe character to pass the standard output of the command as the standard input of the next command;
• Use awk to print the second column of the captured line, and the columns are divided by spaces or Tab symbols;
• Use xargs to convert the standard output of the previous command into the parameters of the next command.

Running service in the background

aaron@ubuntu:~$ nohup appium -p %d --default-capabilities '{"udid":"sn"}' > appium.log 2>&1 &

The background runs appium service for the mobile phone with the designated serial number sn.

Modify file

Find the line starting with "Version" in the zd.conf file and replace it with "Version = 2.0".
Linux

sed -i "s/Version.*/Version = 2.0/" zd.conf

Mac

gsed -i "s/Version.*/Version = 2.0/" zd.conf

Copy directory to remote

scp -r bin/utl-server/0.8/linux/utl-server 139.224.8.129:~

View files in real time

aaron@ubuntu:~$ tail -f jmeter.log
2021-04-25 15:11:51,723 INFO o.a.j.p.h.s.HTTPSamplerBase: Parser for text/xml is org.apache.jmeter.protocol.http.parser.LagartoBasedHtmlParser
2021-04-25 15:11:51,723 INFO o.a.j.p.h.s.HTTPSamplerBase: Parser for text/vnd.wap.wml is org.apache.jmeter.protocol.http.parser.RegexpHTMLParser
2021-04-25 15:11:51,723 INFO o.a.j.p.h.s.HTTPSamplerBase: Parser for text/css is org.apache.jmeter.protocol.http.parser.CssParser
2021-04-25 15:11:51,789 INFO o.a.j.s.SampleResult: Note: Sample TimeStamps are START times
2021-04-25 15:11:51,789 INFO o.a.j.s.SampleResult: sampleresult.default.encoding is set to ISO-8859-1
2021-04-25 15:11:51,789 INFO o.a.j.s.SampleResult: sampleresult.useNanoTime=true

View running services

aaron@ngtesting-lab:~$ systemctl | grep apparmor
  apparmor.service.     loaded active exited    LSB: AppArmor initialization

Check service status

aaron@ubuntu:~$ service apparmor status
● apparmor.service - LSB: AppArmor initialization
   Loaded: loaded (/etc/init.d/apparmor; bad; vendor preset: enabled)
   Active: active (exited) since Fri 2021-05-28 09:42:26 CST; 18s ago
     Docs: man:systemd-sysv-generator(8)
  Process: 19969 ExecStop=/etc/init.d/apparmor stop (code=exited, status=0/SUCCESS)
  Process: 20185 ExecStart=/etc/init.d/apparmor start (code=exited, status=0/SUCCESS)

Restart service

aaron@ubuntu:~$ sudo service apparmor restart

View memory status

aaron@ubuntu:~$ free -h
              total        used        free      shared  buff/cache   available
Mem:           7.8G        2.3G        931M         40M        4.6G        5.2G
Swap:            0B          0B          0B

Check disk status

aaron@ubuntu:~/ df -h
Filesystem      Size  Used Avail Use% Mounted on
udev            3.9G     0  3.9G   0% /dev
tmpfs           799M  3.4M  795M   1% /run
/dev/vda1        40G   33G  4.8G  88% /
tmpfs           3.9G  8.0K  3.9G   1% /dev/shm
tmpfs           5.0M  4.0K  5.0M   1% /run/lock
tmpfs           3.9G     0  3.9G   0% /sys/fs/cgroup
tmpfs           799M     0  799M   0% /run/user/1000

Monitor system status

aaron@ubuntu:~$ top
top - 09:29:37 up 378 days, 16:35,  1 user,  load average: 0.00, 0.00, 0.00
Tasks: 146 total,   1 running, 145 sleeping,   0 stopped,   0 zombie
%Cpu(s):  0.2 us,  0.1 sy,  0.0 ni, 99.8 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st
KiB Mem :  8174708 total,   953320 free,  2365784 used,  4855604 buff/cache
KiB Swap:        0 total,        0 free,        0 used.  5426472 avail Mem

  PID USER      PR  NI    VIRT    RES    SHR S  %CPU %MEM     TIME+ COMMAND
14459 root      10 -10  135204  17124  14024 S   0.7  0.2   2:52.83 AliYunDun
  956 root      20   0 2428132  92556  16208 S   0.3  1.1   2690:07 java
 3217 999       20   0   90232   7264   3296 S   0.3  0.1 308:04.26 redis-server

Under Windows, right-click on the taskbar and select Task Manager .

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