System

Also see inxi…

Battery

Percentage left:

cat /sys/class/power_supply/BAT1/capacity

Hard Disk

Free Space

To see free disk space:

df -H

Tip

For Where has my space gone?, see df

Partitions

To list all available partitions:

fdisk -l

Memory

free -m

cat /proc/meminfo

To find out what process is using all the RAM:

ps -e -o pid,vsz,comm= | sort -n -k 2

Processor

cat /proc/cpuinfo