# Display messages in kernel ring buffer
# Display CPU information
cat /proc/cpuinfo
# Display memory information
cat /proc/meminfo
# Display free and used memory ( -h for human readable, -m for MB, -g for GB.)
free -h
# Display PCI devices
lspci -tv
# Display USB devices
lsusb -tv
# Display DMI/SMBIOS (hardware info) from the BIOS
# Show info about disk sda
hdparm -i /dev/sda
# Perform a read speed test on disk sda
hdparm -tT /dev/sda
# Test for unreadable blocks on disk sda
badblocks -s /dev/sda
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