memory info on linux

Here’s how to view system memory on Linux.

Default display is in kB

cat /proc/meminfo
MemTotal:        7492768 kB
MemFree:          427368 kB
MemAvailable:    5424768 kB

Display in MB

awk '$3=="kB"{$2=$2/1024;$3="MB"} 1' /proc/meminfo | column -t
MemTotal:           7317.16      MB
MemFree:            404.527      MB
MemAvailable:       5285.4       MB

Output in GB

awk '$3=="kB"{$2=$2/1024^2;$3="GB";} 1' /proc/meminfo | column -t
MemTotal:           7.14566      GB
MemFree:            0.370392     GB
MemAvailable:       5.13733      GB