Script for getting system arch in various formats, you simply pass outputs depending on what kind of format you want. e.g. get-sys-arch --x64 --x32 --armhf --arm64

get-sys-arch

#!/bin/bash -ue
HELP="$0 [--i686|--i386|--x86_32|--x32] [--amd64|--x86_64|--x64] [--armv7l|--armv7|--arm|--armhf] [--arm64|--aarch64]"
I386=''; I686=''; X86_32=''; X32=''; BITS_32='';
ONLY_686=''; ONLY_386=''; ONLY_32=''; ONLY_64='';
AMD64=''; X86_64=''; X64=''; BIT_64='';
AARCH64=''; ARM64='';
ARM_V6=''; ARMV7L=''; ARMV7=''; ARM=''; ARM_HF='';
while [ $# -gt 0 ]; do
  case "${1-}" in
    '--32bit'|'-32bit') BIT_64='yes'; ONLY_32=''; I686=''; X32=''; ONLY_386=''; ONLY_686=''; I386=''; X86_32='';;
    '--32'|'-32') ONLY_32='yes'; BIT_32=''; I686=''; X32=''; ONLY_386=''; ONLY_686=''; I386=''; X86_32='';;
    '--i686'|'-i686') I686='yes'; X32=''; ONLY_386=''; ONLY_686=''; I386=''; X86_32=''; BIT_32='';;
    '--i386'|'-i386') I386='yes'; X32=''; ONLY_386=''; ONLY_686=''; I686=''; X86_32=''; BIT_32='';;
    '--386'|'-386') ONLY_386='yes'; X32=''; ONLY_686=''; I386=''; I686=''; X86_32=''; BIT_32='';;
    '--686'|'-686') ONLY_686='yes'; X32=''; ONLY_386=''; I386=''; I686=''; X86_32=''; BIT_32='';;
    '--x32'|'-x32') X32='yes'; X86_32=''; I386=''; I686=''; ONLY_386=''; ONLY_686=''; BIT_32='';;
    '--x86_32'|'-x86_32') X86_32='yes'; I386=''; I686=''; ONLY_386=''; ONLY_686=''; BIT_32='';;
    '--64bit'|'-64bit') BIT_64='yes'; ONLY_64=''; AMD64=''; X64=''; X86_64='';;
    '--64'|'-64') ONLY_64='yes'; BIT_64=''; AMD64=''; X64=''; X86_64='';;
    '--amd64'|'-amd64') AMD64='yes'; BIT_64=''; ONLY_64=''; X64=''; X86_64='';;
    '--x64'|'-x64') X64='yes'; BIT_64=''; ONLY_64=''; X86_64=''; AMD64='';;
    '--x86_64'|'-x86_64') X86_64='yes'; BIT_64=''; ONLY_64=''; X64=''; AMD64='';;
    '--aarch64'|'-aarch64') AARCH64='yes'; ARM64='';;
    '--arm64'|'-arm64') ARM64='yes'; AARCH64='';;
    '--armv6'|'--arm-v6'|'-armv6'|'-arm-v6') ARM_V6='yes'; ARM_V7L=''; ARMV_V7=''; ARM='';;
    '--arm-v7l'|'--armv7l'|'-arm-v7l'|'-armv7l') ARM_V7L='yes'; ARMV_V7=''; ARM='';;
    '--arm-v7'|'--armv7'|'-arm-v7'|'-armv7') ARMV_V7='yes'; ARM_V7L=''; ARM='';;
    '--arm'|'-arm') ARM='yes'; ARM_V7L=''; ARM_V7=''; ARM_HF='';;
    '--armhf'|'-armhf') ARM_HF='yes'; ARM=''; ARM_V7L=''; ARM_V7='';;
    '--help'|'-help'|'-h') echo >&2 "$HELP"; exit 255;;
  esac
  shift
done

ARCH=''; SYS_64BIT='';
[ "$(getconf LONG_BIT)" == '64' ] && SYS_64BIT='yes'
SYS_ARCH="$(lscpu | awk '/Architecture:/{print $2}')"
case "$SYS_ARCH" in
  '386'|'i386'|'686'|'i686'|'x86_32'|'x32'|'32bit'|'32')
    ARCH="$SYS_ARCH"
    if [ -n "$I386" ]; then
      ARCH="i386"
    elif [ -n "$I686" ]; then
      ARCH="i686"
    elif [ -n "$X86_32" ]; then
      ARCH="x86_32"
    elif [ -n "$ONLY_386" ]; then
      ARCH="386"
    elif [ -n "$ONLY_686" ]; then
      ARCH="686"
    elif [ -n "$X32" ]; then
      ARCH="x32"
    elif [ -n "$BIT_32" ]; then
      ARCH="32bit"
    elif [ -n "$ONLY_32" ]; then
      ARCH="32"
    fi
  ;;
  'amd64'|'x86_64'|'x64'|'64bit'|'64')
    ARCH="$SYS_ARCH"
    if [ -n "$AMD64" ]; then
      ARCH="amd64"
    elif [ -n "$X86_64" ]; then
      ARCH="x86_64"
    elif [ -n "$X64" ]; then
      ARCH="x64"
    elif [ -n "$BIT_64" ]; then
      ARCH="64bit"
    elif [ -n "$ONLY_64" ]; then
      ARCH="64"
    fi
  ;;
  'arm64'|'aarch64')
    ARCH="$SYS_ARCH"
    if [ -n "$AARCH64" ]; then
      ARCH="aarch64"
    elif [ -n "$ARM64" ]; then
      ARCH="arm64"
    fi
  ;;
  'arm'|'armv6'|'armv7l'|'armv7')
    if [ -n "$SYS_64BIT" ]; then
      ARCH="$SYS_ARCH"
      if [ -n "$AARCH64" ]; then
        ARCH="aarch64"
      elif [ -n "$ARM64" ]; then
        ARCH="arm64"
      fi
    else
      ARCH="arm"
      if [ -n "$ARM_V7L" -a "$SYS_ARCH" == "armv7l" ]; then
        ARCH="armv7l"
      elif [ -n "$ARM_V7L" -a "$SYS_ARCH" == "armv7" ]; then
        ARCH="armv7l"
      elif [ -n "$ARM_V7" -a "$SYS_ARCH=" == "armv7l" ]; then
        ARCH="arm-v7"
      elif [ -n "$ARM_V7" -a "$SYS_ARCH=" == "armv7" ]; then
        ARCH="arm-v7"
      elif [ -n "$ARM_HF" -a "$SYS_ARCH=" == "armhf" ]; then
        ARCH="armhf"
      elif [ -n "$ARM_V6" ]; then
        ARCH="armv6"
      fi
    fi
  ;;
  'mips') ARCH="mips";;
  *) echo >&2 "ERROR: unknown arch '$SYS_ARCH'"; exit 100;;
esac
echo "$ARCH"