lsmem

List the ranges of available memory with their online status.

Implemented

• Read memory blocks from /sys/devices/system/memory/
• Merge contiguous blocks with matching attributes into ranges
• -a / --all: list each individual memory block
• -b / --bytes: print sizes in bytes
• -J / --json: JSON output
• -P / --pairs: key=“value” output
• -r / --raw: raw output
• -n / --noheadings: suppress header
• -o / --output: select columns (RANGE, SIZE, STATE, REMOVABLE, BLOCK, NODE, ZONES)
• --output-all: show all columns
• -S / --split: control range merging by attribute (state, removable, node, zones, or “none”)
• -s / --sysroot: alternative system root
• --summary: summary line control (never, always, only)
• NUMA node detection
• Memory zone detection