Sometimes you want to quickly populate a chroot environment with busybox links to various system commands. This small script will help you with that.

The Script

#!/bin/bash
# This script links to busybox

# function: print and execute command
exe()
{
    echo "# ""$1"
    echo "--------------------------------------------------------------------------------"
    $1
}

out=$PWD/out
busybox=/sbin/busybox
cmds=`$busybox --help|grep "^Currently defined functions:-*$" -A10|grep \,`
for cmd in $cmds
do
    cmd="${cmd/,/}"
    cmdo=`which $cmd 2>/dev/null`
    # command exists?
    if [ -x "$cmdo" ];then
        # link not yet created?
        if ! [ -x "$out$cmdo" ]; then
            echo "[*] "`man -f $(basename $cmdo)|head -n1|cut -d "-" -f2`
            # create the dir?
            d=`dirname "$out$cmdo"`
            if ! [ -d "$d" ];then
                exe "mkdir -p "$d""
            fi
            # create the link
            exe "ln -s $busybox $out$cmdo"
        fi
    fi
done

exe "mkdir -p $out$(dirname $busybox)"
exe "cp -f $busybox $out$busybox"