System Info

Query macOS system information using built-in commands.

Disk Usage

Overview of all volumes:

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exec: df -h

Directory size breakdown:

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exec: du -sh ~/* 2>/dev/null | sort -hr | head -20

Specific directory:

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exec: du -sh /path/to/directory

Memory Usage

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exec: vm_stat | perl -ne '/page size of (\d+)/ and $size=$1; /Pages\s+(\w+):\s+(\d+)/ and printf("%-16s %6.1f MB\n", "$1:", $2 * $size / 1048576)'

Quick memory summary:

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exec: sysctl hw.memsize | awk '{printf "Total RAM: %.1f GB\n", $2/1073741824}'

Top memory consumers:

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exec: ps aux --sort=-%mem | head -11

CPU Info

CPU model and core count:

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exec: sysctl -n machdep.cpu.brand_string && echo "Cores: $(sysctl -n hw.ncpu) ($(sysctl -n hw.physicalcpu) physical)"

Current CPU load:

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exec: top -l 1 -n 0 | grep "CPU usage"

Top CPU consumers:

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exec: ps aux --sort=-%cpu | head -11

System Overview

macOS version and hardware:

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exec: sw_vers && echo "---" && system_profiler SPHardwareDataType 2>/dev/null | grep -E "Model|Chip|Memory|Serial"

Uptime:

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exec: uptime

Hostname and user:

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exec: echo "Hostname: $(hostname)" && echo "User: $(whoami)"

Network Info

Active network interfaces:

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exec: ifconfig | grep -E "^[a-z]|inet " | grep -B1 "inet "

Public IP:

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exec: curl -s ifconfig.me

Wi-Fi info:

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exec: /System/Library/PrivateFrameworks/Apple80211.framework/Versions/Current/Resources/airport -I | grep -E "SSID|BSSID|channel|RSSI"

Network speed test (simple):

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exec: curl -s -o /dev/null -w "Download speed: %{speed_download} bytes/sec\nTime: %{time_total}s\n" https://speed.cloudflare.com/__down?bytes=10000000

DNS servers:

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exec: scutil --dns | grep nameserver | head -5

Active connections:

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exec: netstat -an | grep ESTABLISHED | wc -l

Battery Status (Laptops)

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exec: pmset -g batt

Detailed battery info:

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exec: system_profiler SPPowerDataType 2>/dev/null | grep -E "Charge|Capacity|Cycle|Condition"

Storage Devices

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exec: diskutil list

Volume info:

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exec: diskutil info /

Running Processes

Total processes:

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exec: ps aux | wc -l

Find process by name:

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exec: pgrep -l "PROCESS_NAME"

Kill process by name:

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exec: pkill "PROCESS_NAME"

Thermal & Fan (Intel Macs)

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exec: sudo powermetrics --samplers smc -i 1 -n 1 2>/dev/null | grep -E "Temperature|Fan"

Notes

•Most commands work without elevated permissions.
•sudo required for some detailed hardware queries.
•system_profiler provides extensive hardware info but can be slow; use specific data types (e.g., SPHardwareDataType).
•For continuous monitoring, use top -l 0 or vm_stat 1 (they run indefinitely, use with timeout).
•Battery commands only work on MacBooks.