diff --git a/extra/random/blum-blum-shub/blum-blum-shub-tests.factor b/extra/random/blum-blum-shub/blum-blum-shub-tests.factor
index a92f256eeb..c882dd2b4d 100644
--- a/extra/random/blum-blum-shub/blum-blum-shub-tests.factor
+++ b/extra/random/blum-blum-shub/blum-blum-shub-tests.factor
@@ -1,27 +1,29 @@
 USING: kernel math tools.test namespaces random
-random.blum-blum-shub ;
+random.blum-blum-shub alien.c-types sequences splitting ;
 IN: blum-blum-shub.tests
 
 [ 887708070 ] [
-    T{ blum-blum-shub f 590695557939 811977232793 } random-32*
+    T{ blum-blum-shub f 590695557939 811977232793 } clone random-32*
 ] unit-test
 
 
 [ 887708070 ] [
-    T{ blum-blum-shub f 590695557939 811977232793 } [
+    T{ blum-blum-shub f 590695557939 811977232793 } clone [
         32 random-bits
+        little-endian? [ <uint> reverse *uint ] unless
     ] with-random
 ] unit-test
 
 [ 5726770047455156646 ] [
-    T{ blum-blum-shub f 590695557939 811977232793 } [
+    T{ blum-blum-shub f 590695557939 811977232793 } clone [
         64 random-bits
+        little-endian? [ <ulonglong> 4 group [ reverse ] map concat *ulonglong ] unless
     ] with-random
 ] unit-test
 
 [ 3716213681 ]
 [
-    100 T{ blum-blum-shub f 200352954495 846054538649 } tuck [
+    100 T{ blum-blum-shub f 200352954495 846054538649 } clone tuck [
         random-32* drop
     ] curry times
     random-32*
diff --git a/extra/shell/parser/parser.factor b/extra/shell/parser/parser.factor
new file mode 100644
index 0000000000..4e3ae8069c
--- /dev/null
+++ b/extra/shell/parser/parser.factor
@@ -0,0 +1,77 @@
+
+USING: kernel arrays strings sequences sequences.deep peg peg.ebnf ;
+
+IN: shell.parser
+
+! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+
+TUPLE: incantation command stdin stdout background ;
+
+! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+
+TUPLE: single-quoted-expr expr ;
+TUPLE: double-quoted-expr expr ;
+TUPLE: back-quoted-expr   expr ;
+TUPLE: glob-expr          expr ;
+
+TUPLE: variable-expr expr ;
+
+! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+
+: <single-quoted-expr> single-quoted-expr boa ;
+: <double-quoted-expr> double-quoted-expr boa ;
+: <back-quoted-expr>   back-quoted-expr boa ;
+: <glob-expr>          glob-expr boa ;
+
+! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+
+EBNF: expr
+
+space = " "
+
+tab   = "\t"
+
+white = (space | tab)
+
+whitespace = (white)* => [[ drop ignore ]]
+
+squote        = "'"
+
+single-quoted = squote (!(squote) .)* squote => [[ second >string <single-quoted-expr> ]]
+
+dquote        = '"'
+
+double-quoted = dquote (!(dquote) .)* dquote => [[ second >string <double-quoted-expr> ]]
+
+bquote = "`"
+
+back-quoted = bquote (!(bquote) .)* bquote => [[ second >string <back-quoted-expr> ]]
+
+variable = "$" other => [[ second variable-expr boa ]]
+
+glob-char = ("*" | "?")
+
+non-glob-char = !(glob-char | white) .
+
+glob-beginning-string = (non-glob-char)* [[ >string ]]
+
+glob-rest-string = (non-glob-char)+ [[ >string ]]
+
+glob = glob-beginning-string glob-char (glob-rest-string | glob-char)* => [[ flatten concat <glob-expr> ]]
+
+other = (!(white | "&" | ">" | ">>" | "<") .)+ => [[ >string ]]
+
+element = (single-quoted | double-quoted | back-quoted | variable | glob | other)
+
+to-file = ">" whitespace other => [[ second ]]
+
+in-file = "<" whitespace other => [[ second ]]
+
+ap-file = ">>" whitespace other  => [[ second ]]
+
+redirection = (in-file)? whitespace (to-file | ap-file)?
+
+line = (element whitespace)+ (in-file)? whitespace (to-file | ap-file)? whitespace ("&")? => [[ first4 incantation boa ]]
+
+;EBNF
+
diff --git a/extra/shell/shell.factor b/extra/shell/shell.factor
new file mode 100644
index 0000000000..f36b6f6400
--- /dev/null
+++ b/extra/shell/shell.factor
@@ -0,0 +1,104 @@
+
+USING: kernel words continuations namespaces debugger sequences combinators
+       system io io.files io.launcher sequences.deep
+       accessors multi-methods newfx shell.parser ;
+
+IN: shell
+
+! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+
+: cd ( args -- )
+  dup empty?
+    [ drop home set-current-directory ]
+    [ first     set-current-directory ]
+  if ;
+
+! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+
+: pwd ( args -- )
+  drop
+  current-directory get
+  print ;
+
+! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+
+: swords ( -- seq ) { "cd" "pwd" } ;
+
+! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+
+GENERIC: expand ( expr -- expr )
+
+METHOD: expand { single-quoted-expr } expr>> ;
+
+METHOD: expand { double-quoted-expr } expr>> ;
+
+METHOD: expand { variable-expr } expr>> os-env ;
+
+METHOD: expand { glob-expr }
+  expr>>
+  dup "*" =
+    [ drop current-directory get directory [ first ] map ]
+    [ ]
+  if ;
+
+METHOD: expand { object } ;
+
+! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+
+: expansion ( command -- command ) [ expand ] map flatten ;
+
+! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+
+: run-incantation ( incantation -- )
+  <process>
+    over command>> expansion >>command
+    over stdin>>             >>stdin
+    over stdout>>            >>stdout
+  swap background>>
+    [ run-detached drop ]
+    [ [ try-process ] [ print-error drop ] recover ]
+  if ;
+
+! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+
+: chant ( incantation -- )
+  dup command>> first swords member-of?
+    [ command>> unclip "shell" lookup execute ]
+    [ run-incantation ]
+  if ;
+
+! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+
+: prompt ( -- )
+  current-directory get write
+  " $ " write
+  flush ;
+
+! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+
+DEFER: shell
+
+: handle ( input -- )
+  {
+    { [ dup f = ]      [ drop ] }
+    { [ dup "exit" = ] [ drop ] }
+    { [ dup "" = ]     [ drop shell ] }
+    { [ dup expr ]     [ expr ast>> chant shell ] }
+    { [ t ]            [ drop "ix: ignoring input" print shell ] }
+  }
+    cond ;
+
+! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+
+: shell ( -- )
+  prompt
+  readln
+  handle ;
+  
+! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+
+: ix ( -- ) shell ;
+
+! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+
+MAIN: ix
\ No newline at end of file