The following information is included:
-- Battery percentage/state
+- Battery percentage/power/state
- CPU usage (in percent)
+- CPU frequency (in MHz)
- Custom shell commands
- Date and time
- Disk[s] status (free storage, percentage, total storage and used storage)
- Kernel version
- Keyboard indicators
- Load averages
+- Number of files in a directory (hint: Maildir)
- Memory status (free memory, percentage, total memory and used memory)
- Swap status (free swap, percentage, total swap and used swap)
- Temperature