diff --git a/openos/.package b/openos/.package
deleted file mode 100644
index b248f01..0000000
--- a/openos/.package
+++ /dev/null
@@ -1,7 +0,0 @@
-{
-	title = 'Shell utilities',
-	repository = 'kepler155c/opus-apps/{{OPUS_BRANCH}}/openos',
-	description = [[Experimental!
-	Utilties for shell: grep, cat, touch, etc ]],
-	licence = 'MIT',
-}
diff --git a/openos/tree.lua b/openos/tree.lua
deleted file mode 100644
index 1d37799..0000000
--- a/openos/tree.lua
+++ /dev/null
@@ -1,331 +0,0 @@
-local computer = require("openos.computer")
-local shell = require("openos.shell")
-local fs = require("openos.filesystem")
-local tx = require("openos.transforms")
-local text = require("openos.text")
-
-local args, opts = shell.parse(...)
-
-local function die(...)
-  io.stderr:write(...)
-  os.exit(1)
-end
-
-do -- handle cli
-  if opts.help then
-    print([[Usage: tree [OPTION]... [FILE]...
-  -a, --all             do not ignore entries starting with .
-      --full-time       with -l, print time in full iso format
-  -h, --human-readable  with -l, print human readable sizes
-      --si              likewise, but use powers of 1000 not 1024
-      --level=LEVEL     descend only LEVEL directories deep
-      --color=WHEN      WHEN can be
-                        auto - colorize output only if writing to a tty,
-                        always - always colorize output,
-                        never - never colorize output; (default: auto)
-  -l                    use a long listing format
-  -f                    print the full path prefix for each file
-  -i                    do not print indentation lines
-  -p                    append "/" indicator to directories
-  -Q, --quote           quote filenames with double quotes
-  -r, --reverse         reverse order while sorting
-  -S                    sort by file size
-  -t                    sort by modification type, newest first
-  -X                    sort alphabetically by entry extension
-  -C                    do not count files and directories
-  -R                    count root directories like other files
-      --help            print this help and exit]])
-    return 0
-  end
-
-  if #args == 0 then
-    table.insert(args, ".")
-  end
-
-  opts.level = tonumber(opts.level) or math.huge
-  if opts.level < 1 then
-    die("Invalid level, must be greater than 0")
-  end
-
-  opts.color = opts.color or "auto"
-  if opts.color == "auto" then
-    opts.color = io.stdout.tty and "always" or "never"
-  end
-
-  if opts.color ~= "always" and opts.color ~= "never" then
-    die("Invalid value for --color=WHEN option; WHEN should be auto, always or never")
-  end
-end
-
-local lastYield = computer.uptime()
-local function yieldopt()
-  if computer.uptime() - lastYield > 2 then
-    lastYield = computer.uptime()
-    os.sleep(0)
-  end
-end
-
-local function peekable(iterator, state, var1)
-  local nextItem = {iterator(state, var1)}
-
-  return setmetatable({
-    peek = function()
-      return table.unpack(nextItem)
-    end
-  }, {
-    __call = coroutine.wrap(function()
-      while true do
-        local item = nextItem
-        nextItem = {iterator(state, nextItem[1])}
-        coroutine.yield(table.unpack(item))
-        if nextItem[1] == nil then break end
-      end
-    end)
-  })
-end
-
-local function filter(entry)
-  return opts.a or entry:sub(1, 1) ~= "."
-end
-
-local function stat(path)
-  local st = {}
-  st.path = path
-  st.name = fs.name(path) or "/"
-  st.sortName = st.name:gsub("^%.","")
-  st.time = fs.lastModified(path)
-  st.isLink = fs.isLink(path)
-  st.isDirectory = fs.isDirectory(path)
-  st.size = st.isLink and 0 or fs.size(path)
-  st.extension = st.name:match("(%.[^.]+)$") or ""
-  st.fs = fs.get(path)
-  return st
-end
-
-local colorize
-if opts.color == "always" then
-  -- from /lib/core/full_ls.lua
-  local colors = tx.foreach(text.split(os.getenv("LS_COLORS") or "", {":"}, true), function(e)
-    local parts = text.split(e, {"="}, true)
-    return parts[2], parts[1]
-  end)
-
-  function colorize(stat)
-    return stat.isLink and colors.ln or
-           stat.isDirectory and colors.di or
-           colors["*" .. stat.extension] or
-           colors.fi
-  end
-end
-
-local function list(path)
-  return coroutine.wrap(function()
-    local l = {}
-    for entry in fs.list(path) do
-      if filter(entry) then
-        table.insert(l, stat(fs.concat(path, entry)))
-      end
-    end
-
-    if opts.S then
-      table.sort(l, function(a, b)
-        return a.size < b.size
-      end)
-    elseif opts.t then
-      table.sort(l, function(a, b)
-        return a.time < b.time
-      end)
-    elseif opts.X then
-      table.sort(l, function(a, b)
-        return a.extension < b.extension
-      end)
-    else
-      table.sort(l, function(a, b)
-        return a.sortName < b.sortName
-      end)
-    end
-
-    for i = opts.r and #l or 1, opts.r and 1 or #l, opts.r and -1 or 1 do
-      coroutine.yield(l[i])
-    end
-  end)
-end
-
-local function digRoot(rootPath)
-  coroutine.yield(stat(rootPath), {})
-
-  if not fs.isDirectory(rootPath) then
-    return
-  end
-  local iterStack = {peekable(list(rootPath))}
-  local pathStack = {rootPath}
-  local levelStack = {not not iterStack[#iterStack]:peek()}
-
-
-  repeat
-    local entry = iterStack[#iterStack]()
-
-    if entry then
-      levelStack[#levelStack] = not not iterStack[#iterStack]:peek()
-
-      local path = fs.concat(fs.concat(table.unpack(pathStack)), entry.name)
-
-      coroutine.yield(entry, levelStack)
-
-      if entry.isDirectory and opts.level > #levelStack then
-        table.insert(iterStack, peekable(list(path)))
-        table.insert(pathStack, entry.name)
-        table.insert(levelStack, not not iterStack[#iterStack]:peek())
-      end
-    else
-      table.remove(iterStack)
-      table.remove(pathStack)
-      table.remove(levelStack)
-    end
-  until #iterStack == 0
-end
-
-local function dig(roots)
-  return coroutine.wrap(function()
-    for _, root in ipairs(roots) do
-      digRoot(root)
-    end
-  end)
-end
-
-local function nod(n)  -- from /lib/core/full_ls.lua
-  return n and (tostring(n):gsub("(%.[0-9]+)0+$","%1")) or "0"
-end
-
-local function formatFSize(size)  -- from /lib/core/full_ls.lua
-  if not opts.h and not opts["human-readable"] and not opts.si then
-    return tostring(size)
-  end
-
-  local sizes = {"", "K", "M", "G"}
-  local unit = 1
-  local power = opts.si and 1000 or 1024
-
-  while size > power and unit < #sizes do
-    unit = unit + 1
-    size = size / power
-  end
-
-  return nod(math.floor(size*10)/10)..sizes[unit]
-end
-
-local function pad(txt)  -- from /lib/core/full_ls.lua
-  txt = tostring(txt)
-  return #txt >= 2 and txt or "0" .. txt
-end
-
-local function formatTime(epochms)  -- from /lib/core/full_ls.lua
-  local month_names = {"January","February","March","April","May","June",
-     "July","August","September","October","November","December"}
-
-  if epochms == 0 then return "" end
-
-  local d = os.date("*t", epochms)
-  local day, hour, min, sec = nod(d.day), pad(nod(d.hour)), pad(nod(d.min)), pad(nod(d.sec))
-
-  if opts["full-time"] then
-    return string.format("%s-%s-%s %s:%s:%s ", d.year, pad(nod(d.month)), pad(day), hour, min, sec)
-  else
-    return string.format("%s %+2s %+2s:%+2s ", month_names[d.month]:sub(1,3), day, hour, pad(min))
-  end
-end
-
-local function writeEntry(entry, levelStack)
-  for i, hasNext in ipairs(levelStack) do
-    if opts.i then break end
-
-    if i == #levelStack then
-      if hasNext then
-        io.write("├── ")
-      else
-        io.write("└── ")
-      end
-    else
-      if hasNext then
-        io.write("│   ")
-      else
-        io.write("    ")
-      end
-    end
-  end
-
-  if opts.l then
-    io.write("[")
-
-    io.write(entry.isDirectory and "d" or entry.isLink and "l" or "f", "-")
-    io.write("r", entry.fs.isReadOnly() and "-" or "w", " ")
-
-    io.write(formatFSize(entry.size), " ")
-
-    io.write(formatTime(entry.time))
-    io.write("] ")
-  end
-
-  if opts.Q then io.write('"') end
-
-  if opts.color == "always" then
-    io.write("\27[" .. colorize(entry) .. "m")
-  end
-
-  if opts.f then
-    io.write(entry.path)
-  else
-    io.write(entry.name)
-  end
-
-  if opts.color == "always" then
-    io.write("\27[0m")
-  end
-
-  if opts.p and entry.isDirectory then
-    io.write("/")
-  end
-
-  if opts.Q then io.write('"') end
-  io.write("\n")
-end
-
-local function writeCount(dirs, files)
-  io.write("\n")
-  io.write(dirs, " director", dirs == 1 and "y" or "ies")
-  io.write(", ")
-  io.write(files, " file", files == 1 and "" or "s")
-  io.write("\n")
-end
-
-local dirs, files = 0, 0
-
-local roots = {}
-for _, arg in ipairs(args) do
-  local path = shell.resolve(arg)
-  local real, reason = fs.realPath(path)
-  if not real then
-    die("cannot access ", path, ": ", reason or "unknown error")
-  elseif not fs.exists(path) then
-    die("cannot access ", path, ":", "No such file or directory")
-  else
-    table.insert(roots, real)
-  end
-end
-
-for entry, levelStack in dig(roots) do
-  if opts.R or #levelStack > 0 then
-    if entry.isDirectory then
-      dirs = dirs + 1
-    else
-      files = files + 1
-    end
-  end
-  writeEntry(entry, levelStack)
-  yieldopt()
-end
-
-if not opts.C then
-  writeCount(dirs, files)
-end
-
diff --git a/shellex/.package b/shellex/.package
new file mode 100644
index 0000000..be27178
--- /dev/null
+++ b/shellex/.package
@@ -0,0 +1,7 @@
+{
+	title = 'Shell utilities',
+	repository = 'kepler155c/opus-apps/{{OPUS_BRANCH}}/shellex',
+	description = [[Experimental!
+	Linux style shell commands: grep, cat, touch, df, etc ]],
+	licence = 'MIT',
+}
diff --git a/openos/apis/computer.lua b/shellex/apis/computer.lua
similarity index 100%
rename from openos/apis/computer.lua
rename to shellex/apis/computer.lua
diff --git a/openos/apis/filesystem.lua b/shellex/apis/filesystem.lua
similarity index 100%
rename from openos/apis/filesystem.lua
rename to shellex/apis/filesystem.lua
diff --git a/shellex/apis/glob.lua b/shellex/apis/glob.lua
new file mode 100644
index 0000000..a622229
--- /dev/null
+++ b/shellex/apis/glob.lua
@@ -0,0 +1,50 @@
+local GtoP = require('shellex.globtopattern')
+
+local Glob = { }
+
+local fs = _G.fs
+
+local function splitpath(path)
+	local parts = { }
+	for match in string.gmatch(path, "[^/]+") do
+		table.insert(parts, match)
+	end
+	return parts
+end
+
+function Glob.matches(path, spec)
+	local t = { }
+	local ss = splitpath(spec)
+	local abs = string.sub(spec, 1, 1) == '/'
+
+	local function dirMatches(dir, i)
+		local files = fs.list(dir)
+		local s = GtoP.globtopattern(ss[i])
+
+		for _, f in pairs(files) do
+			if f:match(s) then
+				local fp = fs.combine(dir, f)
+				if not ss[i + 1] then
+					table.insert(t, '/' .. fp)
+				elseif ss[i + 1] and fs.isDir(fp) then
+					dirMatches(fp, i + 1)
+				end
+			end
+		end
+	end
+
+	path = '/' .. fs.combine('', path) -- normalize
+
+	dirMatches(abs and '' or path, 1)
+
+	if not abs then
+		local len = path == '/' and #path + 1 or #path + 2
+		for k, v in pairs(t) do
+			t[k] = v:sub(len)
+		end
+	end
+
+	return t
+end
+
+return Glob
diff --git a/shellex/apis/globtopattern.lua b/shellex/apis/globtopattern.lua
new file mode 100644
index 0000000..ea91145
--- /dev/null
+++ b/shellex/apis/globtopattern.lua
@@ -0,0 +1,119 @@
+-- see: https://github.com/davidm/lua-glob-pattern
+local M = {_TYPE='module', _NAME='globtopattern', _VERSION='0.2.1.20120406'}
+
+function M.globtopattern(g)
+  -- Some useful references:
+  -- - apr_fnmatch in Apache APR.  For example,
+  --   http://apr.apache.org/docs/apr/1.3/group__apr__fnmatch.html
+  --   which cites POSIX 1003.2-1992, section B.6.
+
+  local p = "^"  -- pattern being built
+  local i = 0    -- index in g
+  local c        -- char at index i in g.
+
+  -- unescape glob char
+  local function unescape()
+    if c == '\\' then
+      i = i + 1; c = g:sub(i,i)
+      if c == '' then
+        p = '[^]'
+        return false
+      end
+    end
+    return true
+  end
+
+  -- escape pattern char
+  local function escape(c)
+    return c:match("^%w$") and c or '%' .. c
+  end
+
+  -- Convert tokens at end of charset.
+  local function charset_end()
+    while 1 do
+      if c == '' then
+        p = '[^]'
+        return false
+      elseif c == ']' then
+        p = p .. ']'
+        break
+      else
+        if not unescape() then break end
+        local c1 = c
+        i = i + 1; c = g:sub(i,i)
+        if c == '' then
+          p = '[^]'
+          return false
+        elseif c == '-' then
+          i = i + 1; c = g:sub(i,i)
+          if c == '' then
+            p = '[^]'
+            return false
+          elseif c == ']' then
+            p = p .. escape(c1) .. '%-]'
+            break
+          else
+            if not unescape() then break end
+            p = p .. escape(c1) .. '-' .. escape(c)
+          end
+        elseif c == ']' then
+          p = p .. escape(c1) .. ']'
+          break
+        else
+          p = p .. escape(c1)
+          i = i - 1 -- put back
+        end
+      end
+      i = i + 1; c = g:sub(i,i)
+    end
+    return true
+  end
+
+  -- Convert tokens in charset.
+  local function charset()
+    i = i + 1; c = g:sub(i,i)
+    if c == '' or c == ']' then
+      p = '[^]'
+      return false
+    elseif c == '^' or c == '!' then
+      i = i + 1; c = g:sub(i,i)
+      if c == ']' then
+        -- ignored
+      else
+        p = p .. '[^'
+        if not charset_end() then return false end
+      end
+    else
+      p = p .. '['
+      if not charset_end() then return false end
+    end
+    return true
+  end
+
+  -- Convert tokens.
+  while 1 do
+    i = i + 1; c = g:sub(i,i)
+    if c == '' then
+      p = p .. '$'
+      break
+    elseif c == '?' then
+      p = p .. '.'
+    elseif c == '*' then
+      p = p .. '.*'
+    elseif c == '[' then
+      if not charset() then break end
+    elseif c == '\\' then
+      i = i + 1; c = g:sub(i,i)
+      if c == '' then
+        p = p .. '\\$'
+        break
+      end
+      p = p .. escape(c)
+    else
+      p = p .. escape(c)
+    end
+  end
+  return p
+end
+
+return M
\ No newline at end of file
diff --git a/openos/apis/keyboard.lua b/shellex/apis/keyboard.lua
similarity index 100%
rename from openos/apis/keyboard.lua
rename to shellex/apis/keyboard.lua
diff --git a/openos/apis/sh.lua b/shellex/apis/sh.lua
similarity index 100%
rename from openos/apis/sh.lua
rename to shellex/apis/sh.lua
diff --git a/openos/apis/shell.lua b/shellex/apis/shell.lua
similarity index 100%
rename from openos/apis/shell.lua
rename to shellex/apis/shell.lua
diff --git a/openos/apis/term.lua b/shellex/apis/term.lua
similarity index 100%
rename from openos/apis/term.lua
rename to shellex/apis/term.lua
diff --git a/openos/apis/text.lua b/shellex/apis/text.lua
similarity index 99%
rename from openos/apis/text.lua
rename to shellex/apis/text.lua
index 4a2b0fd..ce3f4f3 100644
--- a/openos/apis/text.lua
+++ b/shellex/apis/text.lua
@@ -1,5 +1,5 @@
-local unicode = require("openos.unicode")
-local tx = require("openos.transforms")
+local unicode = require("shellex.unicode")
+local tx = require("shellex.transforms")
 
 local text = {}
 text.internal = {}
diff --git a/openos/apis/transfer.lua b/shellex/apis/transfer.lua
similarity index 85%
rename from openos/apis/transfer.lua
rename to shellex/apis/transfer.lua
index bd3868a..8a89d30 100644
--- a/openos/apis/transfer.lua
+++ b/shellex/apis/transfer.lua
@@ -1,6 +1,7 @@
-local fs = require("openos.filesystem")
-local shell = require("openos.shell")
-local text = require("openos.text")
+local fs = require("shellex.filesystem")
+local glob = require('shellex.glob')
+local shell = require("shellex.shell")
+local text = require("shellex.text")
 local lib = {}
 
 local function perr(ops, format, ...)
@@ -236,28 +237,31 @@ function lib.batch(args, options)
   end
   local originalToIsDir = fs.isDirectory(ok)
 
-  for _, fromArg in ipairs(args) do
-    -- a "contents of" copy is where src path ends in . or ..
-    -- a source path ending with . is not sufficient - could be the source filename
-    local contents_of
-    contents_of, ok = contents_check(fromArg, options, true)
-    if ok then
-      -- we do not append fromPath name to toPath in case of contents_of copy
-      local toPath = toArg
-      if contents_of and options.cmd == "mv" then
-        perr(options, "invalid move path '%s'", fromArg)
-      else
-        if not contents_of and originalToIsDir then
-          local fromName = fs.name(fromArg)
-          if fromName then
-            toPath = toPath .. "/" .. fromName
+  for _, arg in ipairs(args) do
+    local files = glob.matches(shell.getWorkingDirectory(), arg)
+    for _, fromArg in pairs(files) do
+      -- a "contents of" copy is where src path ends in . or ..
+      -- a source path ending with . is not sufficient - could be the source filename
+      local contents_of
+      contents_of, ok = contents_check(fromArg, options, true)
+      if ok then
+        -- we do not append fromPath name to toPath in case of contents_of copy
+        local toPath = toArg
+        if contents_of and options.cmd == "mv" then
+          perr(options, "invalid move path '%s'", fromArg)
+        else
+          if not contents_of and originalToIsDir then
+            local fromName = fs.name(fromArg)
+            if fromName then
+              toPath = toPath .. "/" .. fromName
+            end
           end
-        end
 
-        local result, reason = lib.recurse(fromArg, toPath, options, origin, true)
+          local result, reason = lib.recurse(fromArg, toPath, options, origin, true)
 
-        if not result then
-          perr(options, reason)
+          if not result then
+            perr(options, reason)
+          end
         end
       end
     end
diff --git a/openos/apis/transforms.lua b/shellex/apis/transforms.lua
similarity index 99%
rename from openos/apis/transforms.lua
rename to shellex/apis/transforms.lua
index d2ee40d..f9dc1cc 100644
--- a/openos/apis/transforms.lua
+++ b/shellex/apis/transforms.lua
@@ -1,4 +1,3 @@
-
 local lib={}
 lib.internal={}
 
diff --git a/openos/apis/tty.lua b/shellex/apis/tty.lua
similarity index 100%
rename from openos/apis/tty.lua
rename to shellex/apis/tty.lua
diff --git a/openos/apis/unicode.lua b/shellex/apis/unicode.lua
similarity index 100%
rename from openos/apis/unicode.lua
rename to shellex/apis/unicode.lua
diff --git a/openos/autorun/startup.lua b/shellex/autorun/startup.lua
similarity index 100%
rename from openos/autorun/startup.lua
rename to shellex/autorun/startup.lua
diff --git a/openos/cat.lua b/shellex/cat.lua
similarity index 87%
rename from openos/cat.lua
rename to shellex/cat.lua
index de1a293..50245d8 100644
--- a/openos/cat.lua
+++ b/shellex/cat.lua
@@ -1,5 +1,5 @@
-local shell = require("openos.shell")
-local fs = require("openos.filesystem")
+local shell = require("shellex.shell")
+local fs = require("shellex.filesystem")
 
 local args = shell.parse(...)
 local ec = 0
diff --git a/openos/cp.lua b/shellex/cp.lua
similarity index 91%
rename from openos/cp.lua
rename to shellex/cp.lua
index f59c15c..ea502a0 100644
--- a/openos/cp.lua
+++ b/shellex/cp.lua
@@ -1,5 +1,5 @@
-local shell = require("openos.shell")
-local transfer = require("openos.transfer")
+local shell = require("shellex.shell")
+local transfer = require("shellex.transfer")
 
 local args, options = shell.parse(...)
 options.h = options.h or options.help
diff --git a/openos/df.lua b/shellex/df.lua
similarity index 93%
rename from openos/df.lua
rename to shellex/df.lua
index 192dda4..c7b3580 100644
--- a/openos/df.lua
+++ b/shellex/df.lua
@@ -1,6 +1,6 @@
-local fs = require("openos.filesystem")
-local shell = require("openos.shell")
-local text = require("openos.text")
+local fs = require("shellex.filesystem")
+local shell = require("shellex.shell")
+local text = require("shellex.text")
 
 local args, options = shell.parse(...)
 
diff --git a/openos/dmesg.lua b/shellex/dmesg.lua
similarity index 96%
rename from openos/dmesg.lua
rename to shellex/dmesg.lua
index 6e944f5..96203f2 100644
--- a/openos/dmesg.lua
+++ b/shellex/dmesg.lua
@@ -1,4 +1,4 @@
-local tty = require("openos.tty")
+local tty = require("shellex.tty")
 
 local args = {...}
 local gpu = tty.gpu()
diff --git a/openos/du.lua b/shellex/du.lua
similarity index 79%
rename from openos/du.lua
rename to shellex/du.lua
index 692b08a..4bdbea8 100644
--- a/openos/du.lua
+++ b/shellex/du.lua
@@ -1,5 +1,6 @@
-local shell = require("openos.shell")
-local fs = require("openos.filesystem")
+local fs    = require("shellex.filesystem")
+local glob  = require('shellex.glob')
+local shell = require("shellex.shell")
 
 local args, options = shell.parse(...)
 if #args == 0 then
@@ -107,22 +108,24 @@ local function visitor(rpath)
 end
 
 for _,arg in ipairs(args) do
-  local path = shell.resolve(arg)
-
-  if not fs.exists(path) then
-    io.stderr:write(string.format("du: cannot access '%s': no such file or directory\n", arg))
-    return 1
-  else
-    if fs.isDirectory(path) then
-      local total = visitor(arg)
-
-      if bSummary then
-        printSize(total, arg)
-      end
-    elseif fs.isLink(path) then
-      printSize(0, arg)
+  local files = glob.matches(shell.getWorkingDirectory(), arg)
+  for _, v in pairs(files) do
+    local path = shell.resolve(v)
+    if not fs.exists(path) then
+      io.stderr:write(string.format("du: cannot access '%s': no such file or directory\n", v))
+      return 1
     else
-      printSize(fs.size(path), arg)
+      if fs.isDirectory(path) then
+        local total = visitor(v)
+
+        if bSummary then
+          printSize(total, v)
+        end
+      elseif fs.isLink(path) then
+        printSize(0, v)
+      else
+        printSize(fs.size(path), v)
+      end
     end
   end
 end
diff --git a/openos/find.lua b/shellex/find.lua
similarity index 96%
rename from openos/find.lua
rename to shellex/find.lua
index d8c4972..b4695e2 100644
--- a/openos/find.lua
+++ b/shellex/find.lua
@@ -1,6 +1,6 @@
-local shell = require("openos.shell")
-local fs = require("openos.filesystem")
-local text = require("openos.text")
+local shell = require("shellex.shell")
+local fs = require("shellex.filesystem")
+local text = require("shellex.text")
 
 local USAGE =
 [===[Usage: find [path] [--type=[dfs]] [--[i]name=EXPR]
diff --git a/openos/grep.lua b/shellex/grep.lua
similarity index 94%
rename from openos/grep.lua
rename to shellex/grep.lua
index f758660..f4cb39c 100644
--- a/openos/grep.lua
+++ b/shellex/grep.lua
@@ -6,10 +6,11 @@ https://raw.githubusercontent.com/OpenPrograms/Wobbo-Programs/master/grep/grep.l
 -- POSIX grep for OpenComputers
 -- one difference is that this version uses Lua regex, not POSIX regex.
 
-local fs = require("openos.filesystem")
-local shell = require("openos.shell")
-local tty = require("openos.tty")
-local computer = require("openos.computer")
+local computer = require("shellex.computer")
+local fs       = require("shellex.filesystem")
+local glob     = require('shellex.glob')
+local shell    = require("shellex.shell")
+local tty      = require("shellex.tty")
 
 -- Process the command line arguments
 
@@ -28,8 +29,14 @@ for more information, run: man grep
 ]])
 end
 
-local PATTERNS = {args[1]}
-local FILES = {select(2, table.unpack(args))}
+local PATTERNS = { table.remove(args, 1) }
+local FILES = { }
+for _, arg in pairs(args) do
+  local files = glob.matches(shell.getWorkingDirectory(), arg)
+  for _, v in pairs(files) do
+    table.insert(FILES, v)
+  end
+end
 
 local LABEL_COLOR = 0xb000b0
 local LINE_NUM_COLOR = 0x00FF00
@@ -167,7 +174,7 @@ end
 if search_recursively then
   local files = {}
   for _,arg in ipairs(FILES) do
-    if fs.isDirectory(arg) then
+    if fs.isDirectory(shell.resolve(arg)) then
       getAllFiles(arg, files)
     else
       files[#files+1]=arg
diff --git a/openos/head.lua b/shellex/head.lua
similarity index 97%
rename from openos/head.lua
rename to shellex/head.lua
index 7925f7d..0cd41a2 100644
--- a/openos/head.lua
+++ b/shellex/head.lua
@@ -1,5 +1,4 @@
-local shell = require("openos.shell")
-local fs = require("openos.filesystem")
+local shell = require("shellex.shell")
 
 local args, options = shell.parse(...)
 local error_code = 0
diff --git a/openos/hostname.lua b/shellex/hostname.lua
similarity index 87%
rename from openos/hostname.lua
rename to shellex/hostname.lua
index ae1060d..8999e3b 100644
--- a/openos/hostname.lua
+++ b/shellex/hostname.lua
@@ -1,6 +1,6 @@
 local os = _G.os
 
-local shell = require("openos.shell")
+local shell = require("shellex.shell")
 local args = shell.parse(...)
 local hostname = args[1]
 
diff --git a/openos/less.lua b/shellex/less.lua
similarity index 94%
rename from openos/less.lua
rename to shellex/less.lua
index 9bf882f..bc5d390 100644
--- a/openos/less.lua
+++ b/shellex/less.lua
@@ -1,7 +1,7 @@
-local keys = require("openos.keyboard").keys
-local shell = require("openos.shell")
-local unicode = require("openos.unicode")
-local term = require("openos.term") -- using term for negative scroll feature
+local keys = require("shellex.keyboard").keys
+local shell = require("shellex.shell")
+local unicode = require("shellex.unicode")
+local term = require("shellex.term") -- using term for negative scroll feature
 
 local args, ops = shell.parse(...)
 if #args > 1 then
diff --git a/openos/ln.lua b/shellex/ln.lua
similarity index 90%
rename from openos/ln.lua
rename to shellex/ln.lua
index 0dbc0fa..7b5e8c3 100644
--- a/openos/ln.lua
+++ b/shellex/ln.lua
@@ -1,5 +1,5 @@
-local fs = require("openos.filesystem")
-local shell = require("openos.shell")
+local fs = require("shellex.filesystem")
+local shell = require("shellex.shell")
 
 local args = shell.parse(...)
 if #args == 0 then
diff --git a/openos/ls.lua b/shellex/ls.lua
similarity index 93%
rename from openos/ls.lua
rename to shellex/ls.lua
index 083f76f..ec00d26 100644
--- a/openos/ls.lua
+++ b/shellex/ls.lua
@@ -1,9 +1,10 @@
-local fs = require("openos.filesystem")
-local shell = require("openos.shell")
-local tty = require("openos.tty")
-local unicode = require("openos.unicode")
-local tx = require("openos.transforms")
-local text = require("openos.text")
+local fs = require("shellex.filesystem")
+local glob = require('shellex.glob')
+local shell = require("shellex.shell")
+local tty = require("shellex.tty")
+local unicode = require("shellex.unicode")
+local tx = require("shellex.transforms")
+local text = require("shellex.text")
 
 local dirsArg, ops = shell.parse(...)
 
@@ -42,7 +43,6 @@ local function stat(names, index)
   end
   local info = {}
   info.key = name
-info._path = name
   info.path = name:sub(1, 1) == "/" and "" or names.path
   info.full_path = fs.concat(info.path, name)
   info.isDir = fs.isDirectory(info.full_path)
@@ -248,7 +248,6 @@ local function display(names)
       local info = stat(names, index)
       local file_type = info.isLink and 'l' or info.isDir and 'd' or 'f'
       local link_target = info.isLink and string.format(" -> %s", info.link:gsub("/+$", "") .. (info.isDir and "/" or "")) or ""
-_G._p = info
       local write_mode = info.fs.isReadOnly() and '-' or 'w'
       local size = formatSize(info.size)
       local format = "%s-r%s %+"..tostring(max_size_width)..'s '
@@ -345,6 +344,7 @@ local function displayDirList(dirs)
     end
   end
 end
+--[[
 local dir_set, file_set = {}, {path=shell.getWorkingDirectory()}
 for _,dir in ipairs(dirsArg) do
   local path = shell.resolve(dir)
@@ -360,6 +360,23 @@ for _,dir in ipairs(dirsArg) do
     table.insert(file_set, dir)
   end
 end
+]]
+local dir_set, file_set = {}, {path=shell.getWorkingDirectory()}
+for _,dir in ipairs(dirsArg) do
+  local path = shell.resolve(dir)
+  if fs.isDirectory(path) then
+    table.insert(dir_set, dir)
+  else
+    local files = glob.matches(shell.getWorkingDirectory(), dir)
+    for _, v in pairs(files) do
+      table.insert(file_set, v)
+    end
+    if #files == 0 then
+      local access_msg = "cannot access " .. tostring(dir) .. ": "
+      perr(access_msg .. "No such file or directory")
+    end
+  end
+end
 
 io.output():setvbuf("line")
 
diff --git a/openos/mv.lua b/shellex/mv.lua
similarity index 90%
rename from openos/mv.lua
rename to shellex/mv.lua
index a50acc9..b70a417 100644
--- a/openos/mv.lua
+++ b/shellex/mv.lua
@@ -1,5 +1,5 @@
-local shell = require("openos.shell")
-local transfer = require("openos.transfer")
+local shell = require("shellex.shell")
+local transfer = require("shellex.transfer")
 
 local args, options = shell.parse(...)
 options.h = options.h or options.help
diff --git a/openos/rm.lua b/shellex/rm.lua
similarity index 90%
rename from openos/rm.lua
rename to shellex/rm.lua
index fa7ed17..b019c1e 100644
--- a/openos/rm.lua
+++ b/shellex/rm.lua
@@ -1,5 +1,6 @@
-local fs = require("openos.filesystem")
-local shell = require("openos.shell")
+local fs = require("shellex.filesystem")
+local glob = require('shellex.glob')
+local shell = require("shellex.shell")
 
 local function usage()
   print("Usage: rm [options] <filename1> [<filename2> [...]]"..[[
@@ -40,14 +41,14 @@ local function pout(...)
 end
 
 local metas = {}
+local remove
 
 -- promptLevel 3 done before fs.exists
 -- promptLevel 1 asks for each, displaying fs.exists on hit as it visits
 
 local function _path(m) return shell.resolve(m.rel) end
-local function _link(m) return fs.isLink(_path(m)) end
-local function _exists(m) return _link(m) or fs.exists(_path(m)) end
-local function _dir(m) return not _link(m) and fs.isDirectory(_path(m)) end
+local function _exists(m) return fs.exists(_path(m)) end
+local function _dir(m) return fs.isDirectory(_path(m)) end
 local function _readonly(m) return not _exists(m) or fs.get(_path(m)).isReadOnly() end
 local function _empty(m) return _exists(m) and _dir(m) and (fs.list(_path(m))==nil) end
 
@@ -94,7 +95,7 @@ local function remove_all(parent)
   return all_ok
 end
 
-local function remove(meta)
+remove = function(meta)
   if not remove_all(meta) then
     return false
   end
@@ -140,7 +141,10 @@ local function remove(meta)
 end
 
 for _,arg in ipairs(args) do
-  metas[#metas+1] = createMeta(arg, arg)
+  local files = glob.matches(shell.getWorkingDirectory(), arg)
+  for _, v in pairs(files) do
+    metas[#metas+1] = createMeta(v, v)
+  end
 end
 
 if promptLevel == 3 and #metas > 3 then
diff --git a/openos/rmdir.lua b/shellex/rmdir.lua
similarity index 95%
rename from openos/rmdir.lua
rename to shellex/rmdir.lua
index 1a11c27..21d3130 100644
--- a/openos/rmdir.lua
+++ b/shellex/rmdir.lua
@@ -1,6 +1,6 @@
-local shell = require("openos.shell")
-local fs =  require("openos.filesystem")
-local text = require("openos.text")
+local shell = require("shellex.shell")
+local fs =  require("shellex.filesystem")
+local text = require("shellex.text")
 
 local args, options = shell.parse(...)
 
diff --git a/openos/time.lua b/shellex/time.lua
similarity index 85%
rename from openos/time.lua
rename to shellex/time.lua
index 0b9fa79..7abfb2b 100644
--- a/openos/time.lua
+++ b/shellex/time.lua
@@ -1,5 +1,5 @@
-local computer = require('openos.computer')
-local sh = require('openos.sh')
+local computer = require('shellex.computer')
+local sh = require('shellex.sh')
 
 local real_before, cpu_before = computer.uptime(), os.clock()
 local cmd_result = 0
diff --git a/openos/touch.lua b/shellex/touch.lua
similarity index 93%
rename from openos/touch.lua
rename to shellex/touch.lua
index 8f4f094..ff5a84f 100644
--- a/openos/touch.lua
+++ b/shellex/touch.lua
@@ -1,6 +1,6 @@
 --[[Lua implementation of the UN*X touch command--]]
-local shell = require("openos.shell")
-local fs =  require("openos.filesystem")
+local shell = require("shellex.shell")
+local fs =  require("shellex.filesystem")
 
 local args, options = shell.parse(...)
 
diff --git a/openos/which.lua b/shellex/which.lua
similarity index 91%
rename from openos/which.lua
rename to shellex/which.lua
index fed369c..828ddc2 100644
--- a/openos/which.lua
+++ b/shellex/which.lua
@@ -1,4 +1,4 @@
-local shell = require("openos.shell")
+local shell = require("shellex.shell")
 
 local args = shell.parse(...)
 if #args == 0 then