free

free – Display amount of free and used memory on a FreeBSD system.

It’s a clone from the procps-ng free command under Linux.

Background

I switch between Linux and FreeBSD hosts, and free was always a utility i was missing under FreeBSD - so i build it.

Usage

Show the memory statistics in mebibytes including totals.

$ free -mt
                total      used      free
Mem:             7757      4681      1964
Swap:            2048       126      1921
Total:           9805      4808      3886

Show the memory statistics in human readable form, including memory details.

$ free -ah
                total         used        free
Mem:            7.6Gi        4.5Gi       2.0Gi
Swap:           2.0Gi      126.5Mi       1.9Gi
Total:          9.6Gi        4.6Gi       3.8Gi
ARC:            2.0Gi        1.9Gi      47.1Mi
ARC: 2.0Gi Total, 303.4Mi MFU, 1.2Gi MRU, 11.5Mi Anon, 65.1Mi Header, 471.6Mi Other
Mem: 1.2Gi Active, 774.8Mi Inact, 1.1Gi Laundry, 3.3Gi Wired, 0.0B Cache, 1.2Gi Free

see MANUAL.org for the supported flags

Installation

Prebuild

You can download the latest package from: https://github.com/j-keck/free/releases/latest.

I build the package on FreeBSD 11.2-RELEASE-p2 amd64.

If you need the binary for any other architecture / version, feel free to ping me or open an issue

From source

Build the binary

• clone the repository

  git clone github.com/j-keck/free && cd free

• build

  cargo build --release

• copy the binary to your ~/bin folder

  cp target/release/free ~/bin

Build the manpage

I use pandoc to create the man-page from MANUAL.org.

• create the manpage

  pandoc -s -o /usr/local/man/man1/free.1 MANUAL.org