Command documentation sourced from the linux-command project This comprehensive command reference is part of the linux-command documentation project.

dris - Device Resource Information System

The dris command is a comprehensive device resource information system that provides detailed information about system hardware, device resources, and their current utilization. It enables system administrators and developers to monitor, analyze, and manage device resources efficiently. The tool offers real-time monitoring capabilities, resource allocation analysis, and detailed hardware profiling for troubleshooting and system optimization purposes.

Basic Syntax

dris [COMMAND] [OPTIONS] [DEVICE_SPECIFIERS]

Common Commands

list - List all available devices and their status
info - Show detailed information about specific devices
monitor - Real-time monitoring of device resources
stats - Display statistical information about resource usage
check - Perform device health checks
analyze - Analyze resource allocation and bottlenecks
report - Generate comprehensive resource reports

Common Options

Device Selection

-a, --all - Show all devices including inactive ones
-t {TYPE} - Filter by device type (cpu, memory, disk, network, gpu)
-d {DEVICE} - Specify device name or ID
-p {PATH} - Specify device path
-i {ID} - Specify device ID

Output Options

-f {FORMAT} - Output format (table, json, xml, csv)
-v, --verbose - Enable verbose output
-q, --quiet - Suppress non-error output
-c, --compact - Compact output format
--color - Enable colored output
--no-color - Disable colored output

Monitoring Options

-r {RATE} - Refresh rate in seconds
-n {COUNT} - Number of samples to collect
-l, --live - Live monitoring mode
-s, --summary - Show summary only

Analysis Options

--deep - Perform deep analysis
--quick - Quick analysis mode
--history - Include historical data
--compare - Compare with baseline
--threshold {VAL} - Set alert threshold values

Usage Examples

Basic Device Information

Listing Devices

# List all active devices
dris list

# List all devices including inactive
dris list -a

# List specific device types
dris list -t cpu
dris list -t memory
dris list -t disk
dris list -t network
dris list -t gpu

# List devices in specific format
dris list -f json
dris list -f table
dris list -f csv

Getting Device Details

# Show detailed information about all CPUs
dris info -t cpu

# Show information about specific device
dris info -d /dev/sda
dris info -d eth0

# Show verbose information
dris info -v -t memory

# Show information in JSON format
dris info -f json -a

Real-time Monitoring

Live Monitoring

# Monitor all devices in real-time
dris monitor -l

# Monitor specific device type
dris monitor -t cpu -l
dris monitor -t memory -l

# Monitor with custom refresh rate
dris monitor -r 2 -l

# Monitor for specific duration
dris monitor -n 60 -r 1

# Monitor specific device
dris monitor -d /dev/sda -l

Resource Usage Tracking

# Monitor CPU usage
dris monitor -t cpu -v -r 1 -n 30

# Monitor memory utilization
dris monitor -t memory -r 5 -n 24

# Monitor disk I/O
dris monitor -t disk -v -l

# Monitor network statistics
dris monitor -t network -r 1 -l

Performance Analysis

System Analysis

# Perform comprehensive system analysis
dris analyze --deep

# Quick performance check
dris analyze --quick

# Analyze specific resources
dris analyze -t cpu --deep
dris analyze -t memory --history
dris analyze -t disk --compare

# Analyze with threshold alerts
dris analyze --threshold cpu:80 --threshold memory:90

Bottleneck Detection

# Detect system bottlenecks
dris analyze --bottleneck

# Analyze resource allocation
dris analyze --allocation

# Compare with baseline
dris analyze --compare --baseline baseline_2023.json

# Generate bottleneck report
dris analyze --bottleneck -f json > bottleneck_report.json

Health Checks

Device Health Monitoring

# Perform health check on all devices
dris check

# Check specific device types
dris check -t disk
dris check -t network

# Health check with detailed output
dris check -v

# Check specific device
dris check -d /dev/sda1

# Continuous health monitoring
dris check --continuous -r 300

SMART and Diagnostics

# Run SMART tests on disks
dris check -t disk --smart

# Perform network diagnostic tests
dris check -t network --diagnostic

# Memory integrity check
dris check -t memory --integrity

# CPU stress test
dris check -t cpu --stress

Statistical Analysis

Usage Statistics

# Display usage statistics
dris stats

# Statistics for specific period
dris stats --period 24h
dris stats --period 7d

# Statistics by device type
dris stats -t cpu
dris stats -t memory

# Export statistics
dris stats -f csv > usage_stats.csv
dris stats -f json > usage_stats.json

Historical Analysis

# Show historical trends
dris stats --history

# Historical data for specific device
dris stats --history -d /dev/sda

# Generate trend report
dris stats --trend --period 30d

Practical Examples

System Administration

Daily System Monitoring

#!/bin/bash
# Daily system health report

DATE=$(date +%Y%m%d)
REPORT_DIR="/var/reports/dris"

# Create report directory
mkdir -p "$REPORT_DIR"

# Generate comprehensive system report
dris analyze --deep -f json > "$REPORT_DIR/system_analysis_$DATE.json"

# Generate device summary
dris list -a -f table > "$REPORT_DIR/device_summary_$DATE.txt"

# Perform health checks
dris check -v > "$REPORT_DIR/health_check_$DATE.txt"

# Generate statistics
dris stats --history --period 24h -f csv > "$REPORT_DIR/usage_stats_$DATE.csv"

echo "Daily system report generated in $REPORT_DIR"

Resource Monitoring Script

#!/bin/bash
# Continuous resource monitoring

THRESHOLD_CPU=80
THRESHOLD_MEM=90
THRESHOLD_DISK=85
ALERT_EMAIL="admin@example.com"

while true; do
    # Monitor CPU
    CPU_USAGE=$(dris monitor -t cpu -n 1 -f json | jq '.usage_percent')
    if (( $(echo "$CPU_USAGE > $THRESHOLD_CPU" | bc -l) )); then
        echo "High CPU usage: $CPU_USAGE%" | mail -s "CPU Alert" "$ALERT_EMAIL"
    fi

    # Monitor Memory
    MEM_USAGE=$(dris monitor -t memory -n 1 -f json | jq '.usage_percent')
    if (( $(echo "$MEM_USAGE > $THRESHOLD_MEM" | bc -l) )); then
        echo "High memory usage: $MEM_USAGE%" | mail -s "Memory Alert" "$ALERT_EMAIL"
    fi

    # Monitor Disk
    DISK_USAGE=$(dris monitor -t disk -n 1 -f json | jq '.usage_percent')
    if (( $(echo "$DISK_USAGE > $THRESHOLD_DISK" | bc -l) )); then
        echo "High disk usage: $DISK_USAGE%" | mail -s "Disk Alert" "$ALERT_EMAIL"
    fi

    sleep 300  # Check every 5 minutes
done

Performance Optimization

Baseline Creation

#!/bin/bash
# Create performance baseline

BASELINE_FILE="/opt/dris/baselines/system_baseline.json"
DATE=$(date +%Y%m%d_%H%M%S)

# Generate comprehensive baseline
dris analyze --deep -f json > "/opt/dris/baselines/baseline_$DATE.json"

# Create symlink to latest baseline
ln -sf "baseline_$DATE.json" "$BASELINE_FILE"

# Generate device-specific baselines
for device in $(dris list -a -f json | jq -r '.devices[].name'); do
    dris info -d "$device" -f json > "/opt/dris/baselines/${device}_baseline_$DATE.json"
done

echo "Performance baseline created: $DATE"

Performance Comparison

#!/bin/bash
# Compare current performance with baseline

BASELINE="/opt/dris/baselines/system_baseline.json"
REPORT_DIR="/var/reports/performance"
DATE=$(date +%Y%m%d_%H%M%S)

mkdir -p "$REPORT_DIR"

# Generate current analysis
dris analyze --deep -f json > "$REPORT_DIR/current_$DATE.json"

# Compare with baseline
dris analyze --compare --baseline "$BASELINE" -f json > "$REPORT_DIR/comparison_$DATE.json"

# Generate human-readable report
dris analyze --compare --baseline "$BASELINE" -f table > "$REPORT_DIR/comparison_$DATE.txt"

echo "Performance comparison report generated"

Troubleshooting

Problem Diagnosis

#!/bin/bash
# System problem diagnosis

ISSUE_DATE=$(date +%Y%m%d_%H%M%S)
DIAG_DIR="/tmp/dris_diagnosis_$ISSUE_DATE"
mkdir -p "$DIAG_DIR"

echo "Collecting system diagnostic information..."

# System overview
dris list -a -v > "$DIAG_DIR/device_list.txt"
dris info -a -v > "$DIAG_DIR/device_details.txt"

# Performance analysis
dris analyze --deep -f json > "$DIAG_DIR/performance_analysis.json"

# Health checks
dris check -v > "$DIAG_DIR/health_check.txt"

# Resource monitoring snapshot
dris monitor -n 10 -r 1 -a -f json > "$DIAG_DIR/resource_monitoring.json"

# Recent statistics
dris stats --history --period 1h > "$DIAG_DIR/recent_stats.txt"

echo "Diagnostic information collected in: $DIAG_DIR"
echo "Review the files to identify potential issues"

Advanced Usage

Custom Queries

Complex Device Filtering

# Filter by device capabilities
dris list --filter "capability=ssd"
dris list --filter "interface=pcie"

# Filter by resource usage
dris list --filter "usage>50"
dris list --filter "temperature>60"

# Multiple filters
dris list --filter "type=network" --filter "status=active" --filter "speed>1000"

# Custom filtering
dris analyze --filter "name~nvme" --filter "size>500GB"

Advanced Monitoring

# Monitor with custom alerts
dris monitor --alert cpu:85,memory:90,disk:80 --live

# Monitor specific metrics
dris monitor --metrics usage,temperature,throughput -t cpu

# Conditional monitoring
dris monitor --condition "usage>70" --action "notify"

# Monitor with logging
dris monitor --log-file /var/log/dris_monitor.log --live

Integration with Other Tools

JSON Processing Integration

# Extract specific information using jq
dris info -a -f json | jq '.devices[] | select(.type=="disk") | {name, size, usage}'
dris monitor -t cpu -n 1 -f json | jq '.usage_percent'

# Generate custom reports
dris stats --history -f json | jq -r '.timeline[] | "\(.timestamp): \(.cpu_usage)%, \(.memory_usage)%"'

# Filter and process data
dris list -f json | jq -r '.devices[] | select(.status=="active") | .name' | xargs -I {} dris info -d {}

Database Integration

# Store monitoring data in database
dris monitor -n 1440 -r 60 -f json | \
    jq -c '. + {timestamp: now}' | \
    while read -r line; do
        # Insert into database (example with sqlite)
        sqlite3 /var/db/dris_monitoring.db "INSERT INTO monitoring (data) VALUES ('$line');"
    done

# Query historical data
sqlite3 /var/db/dris_monitoring.db "SELECT data FROM monitoring WHERE timestamp > datetime('now', '-1 day');"

Automation and Scripting

Scheduled Tasks

Cron Jobs for Regular Monitoring

# Add to crontab for hourly monitoring
0 * * * * /usr/local/bin/dris_hourly_check.sh

# Add to crontab for daily reports
0 6 * * * /usr/local/bin/dris_daily_report.sh

# Add to crontab for weekly analysis
0 2 * * 0 /usr/local/bin/dris_weekly_analysis.sh

Systemd Service

# /etc/systemd/system/dris-monitor.service
[Unit]
Description=DRIS Resource Monitoring Service
After=network.target

[Service]
Type=simple
User=root
ExecStart=/usr/bin/dris monitor --live --systemd
Restart=always
RestartSec=10

[Install]
WantedBy=multi-user.target

# Enable and start the service
systemctl enable dris-monitor
systemctl start dris-monitor
systemctl status dris-monitor

Troubleshooting

Common Issues

Permission Issues

# Check if running with sufficient privileges
sudo dris list -a

# Set appropriate permissions
sudo chmod +s /usr/bin/dris
sudo usermod -a -G dris $USER

# Run with elevated privileges for full access
sudo dris analyze --deep

Device Access Problems

# Check device accessibility
dris list --check-access

# Fix permissions for specific devices
sudo chmod 660 /dev/device_name
sudo chown $USER:dris /dev/device_name

# Add user to appropriate groups
sudo usermod -a -G disk,input,dialout $USER

Performance Issues

# Use quick analysis instead of deep analysis
dris analyze --quick

# Reduce monitoring frequency
dris monitor -r 30 -l

# Filter to specific devices only
dris monitor -t cpu -l

# Use compact output
dris list --compact

Resource Overhead

# Monitor dris's own resource usage
dris self-monitor

# Reduce resource consumption
dris monitor --low-power

# Use batch mode for large datasets
dris analyze --batch

# Optimize for embedded systems
dris analyze --embedded

lshw - Hardware lister
lscpu - CPU information
lsblk - Block device information
lsusb - USB device information
lspci - PCI device information
free - Memory usage information
df - Disk space information
iostat - I/O statistics
mpstat - CPU statistics
vmstat - Virtual memory statistics
top - Running processes and resource usage
htop - Interactive process viewer
nethogs - Network monitoring by process
iotop - I/O monitoring by process
sar - System activity reporter
dmesg - Kernel ring buffer messages

Best Practices

Regular monitoring - Set up continuous monitoring for critical systems
Baseline creation - Create performance baselines during normal operation
Threshold alerts - Configure appropriate alert thresholds for resources
Historical data - Keep historical data for trend analysis
Permission management - Ensure proper permissions for device access
Resource planning - Use analysis data for capacity planning
Documentation - Document normal operating parameters
Automation - Automate regular checks and reports
Backup configurations - Back up custom configurations and baselines
Regular updates - Keep dris updated for latest features and bug fixes

Performance Tips

Use filters - Filter to specific devices or types to reduce overhead
Adjust refresh rates - Use appropriate refresh rates for different scenarios
Batch processing - Use batch mode for large-scale analysis
Compact output - Use compact output formats for scripts
Parallel processing - Enable parallel processing when available
Caching - Use caching for frequently accessed information
Sampling - Use appropriate sampling intervals for monitoring
Resource limits - Set resource limits for long-running processes
Output format - Choose efficient output formats (JSON for processing)
Selective monitoring - Monitor only what's necessary for your needs

The dris command provides a comprehensive solution for device resource monitoring and analysis, offering detailed insights into system hardware utilization and performance characteristics. Its extensive filtering capabilities, real-time monitoring features, and analysis tools make it an essential utility for system administrators, developers, and IT professionals managing complex computing environments.

Basic Syntax​

Common Commands​

Common Options​

Device Selection​

Output Options​

Monitoring Options​

Analysis Options​

Usage Examples​

Basic Device Information​

Listing Devices​

Getting Device Details​

Real-time Monitoring​

Live Monitoring​

Resource Usage Tracking​

Performance Analysis​

System Analysis​

Bottleneck Detection​

Health Checks​

Device Health Monitoring​

SMART and Diagnostics​

Statistical Analysis​

Usage Statistics​

Historical Analysis​

Practical Examples​

System Administration​

Daily System Monitoring​

Resource Monitoring Script​

Performance Optimization​

Baseline Creation​

Performance Comparison​

Troubleshooting​

Problem Diagnosis​

Advanced Usage​

Custom Queries​

Complex Device Filtering​

Advanced Monitoring​

Integration with Other Tools​

JSON Processing Integration​

Database Integration​

Automation and Scripting​

Scheduled Tasks​

Cron Jobs for Regular Monitoring​

Systemd Service​

Troubleshooting​

Common Issues​

Permission Issues​

Device Access Problems​

Performance Issues​

Resource Overhead​

Related Commands​

Best Practices​

Performance Tips​

Basic Syntax

Common Commands

Common Options

Device Selection

Output Options

Monitoring Options

Analysis Options

Usage Examples

Basic Device Information

Listing Devices

Getting Device Details

Real-time Monitoring

Live Monitoring

Resource Usage Tracking

Performance Analysis

System Analysis

Bottleneck Detection

Health Checks

Device Health Monitoring

SMART and Diagnostics

Statistical Analysis

Usage Statistics

Historical Analysis

Practical Examples

System Administration

Daily System Monitoring

Resource Monitoring Script

Performance Optimization

Baseline Creation

Performance Comparison

Troubleshooting

Problem Diagnosis

Advanced Usage

Custom Queries

Complex Device Filtering

Advanced Monitoring

Integration with Other Tools

JSON Processing Integration

Database Integration

Automation and Scripting

Scheduled Tasks

Cron Jobs for Regular Monitoring

Systemd Service

Troubleshooting

Common Issues

Permission Issues

Device Access Problems

Performance Issues

Resource Overhead

Related Commands

Best Practices

Performance Tips