chrootcmd.sh

#!/bin/bash
# copy necessary lib for system command from root to chrooted directory
#
# Frédéric Nandrin - NanIT 2019 - fred@nanit.be
# Tested on Debian 9
#
# USAGE : chrootcmd <chrooted dir> <cmd>
#    ex : chrootcmd /home/fred /bin/ls
#

CHROOT=$1
mkdir $CHROOT -p

cp $2 $1$2

for i in $( ldd $2 | grep -v dynamic | cut -d " " -f 3 | sed 's/://' | sort | uniq )
  do
    cp --parents $i $CHROOT
  done

# ARCH amd64
if [ -f /lib64/ld-linux-x86-64.so.2 ]; then
   cp --parents /lib64/ld-linux-x86-64.so.2 /$CHROOT
fi

# ARCH i386
if [ -f  /lib/ld-linux.so.2 ]; then
   cp --parents /lib/ld-linux.so.2 /$CHROOT
fi

echo "Command $2 has been prepared in chrooted dir $1"