uname_arch.sh

# uname_arch converts `uname -m` back into standardized golang
# OS types.
#
# See also `uname_arch_check` for a self-check
#
# ## NOTES
#
# Notes on ARM:
# arm 5,6,7: uname is of form `armv6l`, ` armv7l` where a letter
# or something else is after the number. Has examples:
# https://github.com/golang/go/wiki/GoArm
# https://en.wikipedia.org/wiki/List_of_ARM_microarchitectures
#
# arm 8 is know as arm64, and aarch64
#
# more notes: https://github.com/golang/go/issues/13669
#
# ## EXAMPLE
#
# ```bash
# ARCH=$(uname_arch)
# ```
#
#
uname_arch() {
  arch=$(uname -m)
  case $arch in
    x86_64) arch="amd64" ;;
    i86pc) arch="amd64" ;;
    x86) arch="386" ;;
    i686) arch="386" ;;
    i386) arch="386" ;;
    aarch64) arch="arm64" ;;
    armv5*) arch="armv5" ;;
    armv6*) arch="armv6" ;;
    armv7*) arch="armv7" ;;
  esac
  echo ${arch}
}