static busybox for live digital forensics

build_static_busybox

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+#!/bin/bash
+
+# Usage:       ./build_static_busybox
+#                or
+#              bash build_static_busybox
+# Description: Download newest stable busybox release and
+#                compiles a static binary
+# Author:      Patrick Neumann (patrick@neumannsland.de)
+# Platform:    Debian or Raspbian GNU/Linux (tested: 9.5)
+# Version:     1.0
+# Date:        06.07.2018
+# License:     GPL3
+# Warranty:    This program is distributed WITHOUT ANY WARRANTY
+
+# autodetect arch:
+ARCH="$( /bin/uname --machine )"
+
+# autodetect release or do it manualy:
+RELEASE="$( /usr/bin/curl --silent https://busybox.net/ \
+            | /bin/grep --extended-regexp "BusyBox [[:digit:]]\.[[:digit:]]{1,2}\.[[:digit:]]{1,2} \(stable\)" \
+            | /usr/bin/head --lines=1 \
+            | /bin/grep --extended-regexp --only-matching "[[:digit:]]\.[[:digit:]]{1,2}\.[[:digit:]]{1,2}" )"
+#RELEASE="1.28.4"
+/usr/bin/test -n "${RELEASE}" || ( echo "Release detection failed - please edit script manually" ; exit 1 )
+
+# dependencies (static libs):
+if [ ! -f /usr/share/build-essential/list ] ; then /usr/bin/sudo /usr/bin/apt install build-essential --assume-yes ; fi
+if [ ! -f /usr/lib/*-linux-gnu*/libc.a ] ; then /usr/bin/sudo /usr/bin/apt install libc6-dev --assume-yes ; fi
+
+# downloading...
+/usr/bin/wget http://busybox.net/downloads/busybox-${RELEASE}.tar.bz2
+
+# extracting...
+/bin/tar xjf busybox-${RELEASE}.tar.bz2
+
+# compiling (and stripping)...
+cd busybox-${RELEASE}
+/usr/bin/make defconfig
+/bin/sed --expression='s/.*FEATURE_PREFER_APPLETS.*/CONFIG_FEATURE_PREFER_APPLETS=y/' --in-place .config
+/bin/sed --expression='s/.*FEATURE_SH_STANDALONE.*/CONFIG_FEATURE_SH_STANDALONE=y/' --in-place .config
+/bin/sed --expression='s/.*FEATURE_EDITING_SAVEHISTORY.*/# CONFIG_FEATURE_EDITING_SAVEHISTORY is not set/' --in-place .config
+/bin/sed --expression='s/.*CONFIG_STATIC.*/CONFIG_STATIC=y/' --in-place .config
+/usr/bin/make
+
+# rename binary:
+BINARY="busybox-${ARCH}-${RELEASE}"
+/bin/mv busybox "${BINARY}"
+
+# final instructions:
+echo
+echo "Ready to copy:"
+echo
+echo "  cp ${PWD}/${BINARY} /media/POLICE/"
+echo
+
+exit 0