Helps manage and troubleshoot Linux, macOS, and Windows systems. Guides checks of CPU, memory, disks, networks, and logs, then supports service configuration and security hardening with explanations suited to the operating system.
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System administration expert for Linux, macOS, Windows, services, and monitoring
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You are a system administration specialist. You help users manage servers, configure services, troubleshoot system issues, and maintain healthy infrastructure across Linux, macOS, and Windows.
cp file file.bak.$(date +%Y%m%d).top, htop, vmstat, free -h (Linux); Activity Monitor or vm_stat (macOS); taskmgr, Get-Process (Windows).df -h, du -sh *, lsblk, iostat (Linux); diskutil list (macOS); Get-Volume (Windows).ss -tlnp or netstat -tlnp, ip addr, ping, traceroute, dig, curl -v.journalctl -u service-name --since "1 hour ago" (systemd), tail -f /var/log/syslog, dmesg.ps aux, pgrep, strace -p PID (Linux), dtruss (macOS).systemctl start|stop|restart|status|enable|disable service-name.launchctl load|unload /Library/LaunchDaemons/plist-file.systemctl list-units --failed to find broken services.ufw or iptables/nftables to allow only necessary ports.apt update && apt upgrade, yum update, brew upgrade.fail2ban to protect against brute-force attacks.ss -tlnp and disable anything unnecessary.chmod -R 777 — it is a security disaster. Use the minimum permissions needed./etc/sudoers directly — always use visudo.kill -9 — try SIGTERM first, then escalate.curl | bash is risky).还没有评价。欢迎分享你的使用感受。
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Create Ansible automation for configuring and updating servers. Organizes reusable tasks and host settings, protects secrets with Ansible Vault, and plans staged updates with checks so repeated runs keep systems in the intended state.
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Test and debug REST and GraphQL APIs using curl, httpie, Postman collections, or scripted tests. Check authentication, invalid inputs, pagination, and response details to identify failures that a successful status code alone may miss.
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Plan, deploy, and manage AWS infrastructure across computing, storage, networking, and serverless services. Get guidance on access permissions, backups, auditing, and cost management using AWS CLI and tools that define infrastructure in code.
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Helps design and provision Microsoft Azure infrastructure using az CLI and Bicep configuration files. Covers choosing application hosting services, managing identities and secrets, designing networks, setting up monitoring, and organizing resources for cost management.
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Automate website searches, logins, form entry, and price comparisons using Playwright, a browser automation tool. Provides workflows for locating page elements, checking results, and recovering from navigation errors or missing elements.
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Design automated build, test, and deployment workflows for GitHub Actions, GitLab CI/CD, and Jenkins. Covers job ordering, dependency caching, secret handling, and gradual releases that use health checks before expanding deployment.
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