[silverzhao]

The default bash on KT is a symbolic link to bushbox, and it's not very comfortable to use, such as no readline, no reverse-search, etc.

So I've compiled one for KT and it works well. If you are interested, maybe you can have a try.

--EDIT--
Here is the source: http://ftp.gnu.org/gnu/bash/bash-4.2.tar.gz
and you may need the patch from here.

Patch:

Spoiler:

$ cat m.patch
--- execute_cmd.c.orig	2012-12-18 01:17:36.461797844 +0800
+++ execute_cmd.c	2012-12-18 01:19:37.217827181 +0800
@@ -2202,7 +2202,11 @@
   /* If the `lastpipe' option is set with shopt, and job control is not
      enabled, execute the last element of non-async pipelines in the
      current shell environment. */
+#if defined (JOB_CONTROL)
   if (lastpipe_opt && job_control == 0 && asynchronous == 0 && pipe_out == NO_PIPE && prev > 0)
+#else
+  if (lastpipe_opt && asynchronous == 0 && pipe_out == NO_PIPE && prev > 0)
+#endif /* JOB_CONTROL */
     {
       lstdin = move_to_high_fd (0, 0, 255);
       if (lstdin > 0)

I compiled it with:

$ patch < m.patch
$ CC=arm-unknown-linux-gnueabi-gcc ./configure --host=arm-linux --target=arm-linux --enable-history --enable-readline --without-bash-malloc