Write a commentLinux commands for memory use. Last edit: Wed Oct 23 4:38PM.
May change this later to add tmux(1).
Memory Information
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free -h: Shows free and used memory. -
cat /proc/meminfo: Displays detailed memory usage.
Real-time Monitoring
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top: Real-time system resource usage. -
htop: Interactive process viewer.
Process Memory Usage
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ps aux --sort -rss: Lists processes by memory usage.
System Activity Reports
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vmstat 1: Reports on processes, memory, and more. -
sar -r: Reports memory usage.
Comprehensive System Stats
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dstat -m: Provides memory usage stats.
BASIC THINGS ABOUT LINUX & MAC-OS
Linux
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Open-Source Nature: Linux is free and open-source, allowing users to modify and distribute the code.
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Command:
cat /etc/os-release(Displays OS information)
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Customization: Linux offers extensive customization options for users.
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Command:
lsb_release -a(Displays Linux distribution information)
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Package Management: Linux distributions use package managers to install software.
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Command:
apt-get install <package_name>(Installs a package using APT)
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Multi-User Support: Linux supports multiple users with different permissions.
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Command:
who(Displays who is currently logged in)
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Stability: Linux is known for its stability and reliability.
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Command:
uptime(Displays system uptime)
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Security: Linux has robust security features.
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Command:
sudo(Provides superuser privileges)
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Networking: Linux has advanced networking capabilities.
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Command:
ifconfig(Displays network interface configuration)
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File System: Linux supports various file systems.
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Command:
df -h(Displays disk space usage)
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Scripting: Linux supports various scripting languages.
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Command:
bash(Starts a Bash shell)
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Portability: Linux can run on various hardware platforms.
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Command:
uname -a(Displays system information)
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macOS Darwin
https://www.matisse.net/OSX/darwin_commands.html
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Unix-Based: Darwin is the core of macOS, based on BSD and Mach technologies.
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Command:
uname -a(Displays system information)
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Open-Source: Darwin is open-source, allowing developers to access and modify the code.
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Command:
open /System/Library/CoreServices(Opens the Core Services directory)
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Advanced Networking: Darwin supports advanced networking features.
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Command:
networksetup -listallnetworkservices(Lists all network services)
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Apache Web Server: Darwin includes the Apache web server.
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Command:
apachectl -v(Displays Apache version)
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File System Support: Darwin supports both Mac OS and Unix file systems.
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Command:
diskutil list(Lists all disks and partitions)
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X Window System: Darwin supports the X Window System.
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Command:
open -a XQuartz(Opens XQuartz)
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PowerPC and Intel Compatibility: Darwin runs on both PowerPC and Intel-compatible platforms.
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Command:
sysctl hw(Displays hardware information)
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Core Services: Darwin includes various core services.
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Command:
launchctl list(Lists loaded launch daemons and agents)
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Apple Technologies: Darwin integrates Apple technologies.
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Command:
defaults read(Reads macOS user defaults)
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Portability: Darwin can run on various hardware platforms.
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Command:
system_profiler(Displays detailed system information)
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