System

Play Linux System Distributions Online in a Web Browser

2022-02-16. Category & Tags: System, linux, distributions, Online, Web

Note: many with 5 minute inactive limit and 30 minutes per session limit. CodeAnyWhere container (tested 2022.02, w/ root-sudo & git): py, c/c++, java, php, js, ruby, h5, wordpress, .net, rust, go, node.js. (can skip all payment part). terminal speed good. limitted free trial time. WebMinal (tested 2022.02, NO root/git) (CN network issue for home page, but ok after): Federo CentOS7 (py2.7), right-sided lessons/tutorials (great for new users): shell, MySQL, Python etc. ...

Windows Management Tools

2022-02-16. Category & Tags: System, Windows, Management, Tools

Windows Task Scheduler (任务计划程序) # Examples: $action = New-ScheduledTaskAction -Execute 'pwsh.exe' -Argument '-NonInteractive -NoLogo -NoProfile -File "C:\MyScript.ps1"' $trigger = New-ScheduledTaskTrigger -Once -At 3am $settings = New-ScheduledTaskSettingsSet $task = New-ScheduledTask -Action $Action -Trigger $Trigger -Settings $Settings Register-ScheduledTask -TaskName 'MySchedule' -InputObject $task -User 'username' -Password 'passhere' ScheduledTask -TaskName 'MySchedule' $action = New-ScheduledTaskAction -Execute 'Powershell.exe' ` -Argument '-NoProfile -WindowStyle Hidden -command "& {get-eventlog -logname Application -After ((get-date).AddDays(-1)) | Export-Csv -Path c:\fso\applog.csv -Force -NoTypeInformation}"' $trigger = New-ScheduledTaskTrigger -Daily -At 0am Register-ScheduledTask -Action $action -Trigger $trigger -TaskName "AppLog" -Description "Daily dump of Applog" $action = New-ScheduledTaskAction -Execute 'C:\FreeFileSync\FreeFileSync. ...

System Monitoring Tools (Command-Line)

2017-03-04. Category & Tags: System, Monitoring

See also: Linux server performance measurements monitoring tuning tools For networking /monitor-networking. For GPU in deep learning dmml.nu/dl-gpu-monitor TEMPERATURE # To monitor CPU temperature lm-sensors (Linux Monitoring sensors): sudo apt-get install -y lm-sensors && \ sudo sensors-detect && \ sensors # sudo service kmod start # optional Extra: using watch to auto-refresh: watch -n 1 -d sensors # n: nr of seconds to refresh (gif from nixCraft) To monitor HDD temperature: ...

Path to System Design

2017-01-15. Category & Tags: System, Design, Architecture

SNAKE TEMPLATE FOR REQUIREMENT # Scenario: use-case (if system is big) / interface (if sys is small). Necessary: constrain/hypothesis. Application: service/algorithm, e.g. MVC etc. Kilobit: data. Evolve: agile spring plan, inc. performance. Example of recommender sys for personal radio station. S: recommend a song for a user; like; dislike; skip. N: 5 Millon users online » about 50k qps (quests per sec) » need 1~2 servers only (cuz we can optimize, e. ...