Siguiendo el método que uso el autor del post[1] para realizar root en el celular ZTE-V856, esta es la versión para linux de runme.bat [1] http://www.taringa.net/posts/celulares/16004986/_Quieres-rootear-tu-celular-android_--_-entra-aqui.html

runme.sh

#!/usr/bin/env sh
# This file was ported to shell executable from runme.bat
# Autor David Retana
# Date 01-2013

cat <<-EOF
 ---------------------------------------------------------------
                 Easy rooting toolkit (v3.0)
                    created by DooMLoRD
         using exploit zergRush (Revolutionary Team)
    Credits go to all those involved in making this possible!
 ---------------------------------------------------------------
  [*] This script will:
      (1) root ur device using latest zergRush exploit (16 Nov)
      (2) install Busybox (1.18.4)
      (3) install SU files (binary: 3.0.3 and apk: 3.0.6)
  [*] Before u begin:   
      (1) make sure u have installed adb drivers for ur device
      (2) enable "USB DEBUGGING" 
            from (Menu/Settings/Applications/Development)
      (3) enable "UNKNOWN SOURCES"
            from (Menu/Settings/Applications)
      (4) [OPTIONAL] increase screen timeout to 10 minutes
      (5) connect USB cable to PHONE and then connect to PC
      (6) skip "PC Companion Software" prompt on device
 ---------------------------------------------------------------
EOF
read -p "CONFIRM ALL THE ABOVE THEN "

echo "--- STARTING ----"
echo "--- WAITING FOR DEVICE"
adb wait-for-device

echo "--- cleaning"
adb shell "cd /data/local/tmp/; rm *"

echo "--- pushing zergRush"
adb push files/zergRush /data/local/tmp/.

echo "--- correcting permissions"
adb shell "chmod 777 /data/local/tmp/zergRush"

echo "--- executing zergRush"
adb shell "./data/local/tmp/zergRush"

cat <<-JS_PROMISES_O_K_ASE
 --- WAITING FOR DEVICE TO RECONNECT
 if it gets stuck over here for a long time then try:
    disconnect usb cable and reconnect it
    toggle "USB DEBUGGING" (first disable it then enable it)
 --- DEVICE FOUND
JS_PROMISES_O_K_ASE
adb wait-for-device

echo "--- pushing busybox"
adb push files/busybox /data/local/tmp/.

echo "--- correcting permissions"
adb shell "chmod 755 /data/local/tmp/busybox"

echo "--- remounting /system"
adb shell "/data/local/tmp/busybox mount -o remount,rw /system"

echo "--- copying busybox to /system/xbin/"
adb shell "dd if=/data/local/tmp/busybox of=/system/xbin/busybox"

echo "--- correcting ownership"
adb shell "chown root.shell /system/xbin/busybox"

echo "--- correcting permissions"
adb shell "chmod 04755 /system/xbin/busybox"

echo "--- installing busybox"
adb shell "/system/xbin/busybox --install -s /system/xbin"
adb shell "rm -r /data/local/tmp/busybox"

echo "--- pushing SU binary"
adb push files/su /system/bin/su

echo "--- correcting ownership"
adb shell "chown root.shell /system/bin/su"

echo "--- correcting permissions"
adb shell "chmod 06755 /system/bin/su"

echo "--- correcting symlinks"
adb shell "rm /system/xbin/su"
adb shell "ln -s /system/bin/su /system/xbin/su"

echo "--- pushing Superuser app"
adb push files/Superuser.apk /system/app/.

echo "--- cleaning"
adb shell "cd /data/local/tmp/; rm *"

echo "--- rebooting"
adb reboot

echo "ALL DONE!!!"