diff --git a/docs/source/tubes/processes.rst b/docs/source/tubes/processes.rst
index c4d891b35..a14377c0b 100644
--- a/docs/source/tubes/processes.rst
+++ b/docs/source/tubes/processes.rst
@@ -2,10 +2,6 @@
 
    from pwn import *
 
-   # TODO: Remove global POSIX flag
-   import doctest
-   doctest_additional_flags = doctest.OPTIONFLAGS_BY_NAME['POSIX']
-
 :mod:`pwnlib.tubes.process` --- Processes
 ===========================================================
 
diff --git a/docs/source/tubes/serial.rst b/docs/source/tubes/serial.rst
index 599ca35c4..d850a0483 100644
--- a/docs/source/tubes/serial.rst
+++ b/docs/source/tubes/serial.rst
@@ -2,10 +2,6 @@
 
    from pwn import *
 
-   # TODO: Remove global POSIX flag
-   import doctest
-   doctest_additional_flags = doctest.OPTIONFLAGS_BY_NAME['POSIX']
-
 :mod:`pwnlib.tubes.serialtube` --- Serial Ports
 ===========================================================
 
diff --git a/pwnlib/tubes/process.py b/pwnlib/tubes/process.py
index 6e36b61be..ba2bd2aa5 100644
--- a/pwnlib/tubes/process.py
+++ b/pwnlib/tubes/process.py
@@ -135,19 +135,22 @@ class process(tube):
         True
         >>> p.connected('send')
         False
-        >>> p.recvline()
-        b'Hello world\n'
+        >>> p.recvline() # doctest: +ELLIPSIS
+        b'Hello world...\n'
         >>> p.recvuntil(b',')
         b'Wow,'
         >>> p.recvregex(b'.*data')
         b' such data'
-        >>> p.recv()
-        b'\n'
+        >>> p.recv() # doctest: +ELLIPSIS
+        b'...\n'
         >>> p.recv() # doctest: +ELLIPSIS
         Traceback (most recent call last):
         ...
         EOFError
 
+    .. doctest::
+        :options: +POSIX
+
         >>> p = process('cat')
         >>> d = open('/dev/urandom', 'rb').read(4096)
         >>> p.recv(timeout=0.1)
@@ -515,6 +518,9 @@ def program(self):
 
         Example:
 
+        .. doctest::
+            :options: +POSIX +TODO
+
             >>> p = process('/bin/true')
             >>> p.executable == '/bin/true'
             True
@@ -530,6 +536,9 @@ def cwd(self):
 
         Example:
 
+        .. doctest::
+            :options: +POSIX +TODO
+
             >>> p = process('sh')
             >>> p.sendline(b'cd /tmp; echo AAA')
             >>> _ = p.recvuntil(b'AAA')
@@ -902,7 +911,10 @@ def maps(self):
             read, write, execute, private, shared, string
 
         Example:
-      
+
+        .. doctest::
+            :options: +POSIX +TODO
+
             >>> p = process(['cat'])
             >>> p.sendline(b"meow")
             >>> p.recvline()
@@ -982,7 +994,10 @@ def get_mapping(self, path_value, single=True):
         path_value.
 
         Example:
-            
+
+        .. doctest::
+            :options: +POSIX
+
             >>> p = process(['cat'])
             >>> mapping = p.get_mapping('[stack]')
             >>> mapping.path == '[stack]'
@@ -1025,6 +1040,9 @@ def stack_mapping(self, single=True):
 
         Example:
 
+        .. doctest::
+            :options: +POSIX
+
             >>> p = process(['cat'])
             >>> mapping = p.stack_mapping()
             >>> mapping.path
@@ -1054,6 +1072,9 @@ def heap_mapping(self, single=True):
 
         Example:
 
+        .. doctest::
+            :options: +POSIX
+
             >>> p = process(['cat'])
             >>> p.sendline(b'meow')
             >>> p.recvline()
@@ -1086,6 +1107,9 @@ def vdso_mapping(self, single=True):
 
         Example:
 
+        .. doctest::
+            :options: +LINUX
+
             >>> p = process(['cat'])
             >>> mapping = p.vdso_mapping()
             >>> mapping.path
@@ -1115,6 +1139,9 @@ def vvar_mapping(self, single=True):
 
         Example:
 
+        .. doctest::
+            :options: +LINUX
+
             >>> p = process(['cat'])
             >>> mapping = p.vvar_mapping()
             >>> mapping.path
@@ -1145,6 +1172,9 @@ def libc_mapping(self, single=True):
 
         Example:
 
+        .. doctest::
+            :options: +POSIX
+
             >>> p = process(['cat'])
             >>> p.sendline(b'meow')
             >>> p.recvline()
@@ -1225,6 +1255,9 @@ def elf_mapping(self, single=True):
 
         Example:
 
+        .. doctest::
+            :options: +POSIX
+
             >>> p = process(['cat'])
             >>> p.sendline(b'meow')
             >>> p.recvline()
@@ -1263,7 +1296,9 @@ def lib_size(self, path_value):
 
         Example:
 
-            >>> from pwn import *
+        .. doctest::
+            :options: +POSIX
+
             >>> p = process(['cat'])
             >>> p.send(b'meow')
             >>> p.recvuntil(b'meow')
@@ -1303,6 +1338,9 @@ def address_mapping(self, address):
 
         Example:
 
+        .. doctest::
+            :options: +POSIX
+
             >>> p = process(['cat'])
             >>> p.sendline(b'meow')
             >>> p.recvline()
@@ -1363,16 +1401,19 @@ def libc(self):
 
         Example:
 
-        >>> p = process("/bin/cat")
-        >>> p.send(b"meow")
-        >>> p.recvuntil(b"meow")
-        b'meow'
-        >>> libc = p.libc
-        >>> libc is not None
-        True
-        >>> libc # doctest: +SKIP
-        ELF('/lib64/libc-...so')
-        >>> p.close()
+        .. doctest::
+            :options: +POSIX
+
+            >>> p = process("/bin/cat")
+            >>> p.send(b"meow")
+            >>> p.recvuntil(b"meow")
+            b'meow'
+            >>> libc = p.libc
+            >>> libc is not None
+            True
+            >>> libc # doctest: +SKIP
+            ELF('/lib64/libc-...so')
+            >>> p.close()
         """
         from pwnlib.elf import ELF
 
@@ -1447,6 +1488,9 @@ def leak(self, address, count=1):
 
         Example:
 
+        .. doctest::
+            :options: +POSIX +TODO
+
             >>> e = ELF(which('bash-static'))
             >>> p = process(e.path)
 
@@ -1483,6 +1527,9 @@ def writemem(self, address, data):
         
             Let's write data to  the beginning of the mapped memory of the  ELF.
 
+        .. doctest::
+            :options: +POSIX +TODO
+
             >>> context.clear(arch='i386')
             >>> address = 0x100000
             >>> data = cyclic(32)
diff --git a/pwnlib/util/misc.py b/pwnlib/util/misc.py
index 0b99a599b..04265f950 100644
--- a/pwnlib/util/misc.py
+++ b/pwnlib/util/misc.py
@@ -163,8 +163,10 @@ def which(name, all = False, path=None):
 
     Example:
 
-        >>> which('sh') # doctest: +ELLIPSIS +POSIX +TODO
+        >>> which('sh') # doctest: +ELLIPSIS +POSIX
         '.../bin/sh'
+        >>> which('cmd') # doctest: +ELLIPSIS +WINDOWS
+        '...\\cmd.EXE'
     """
     # If name is a path, do not attempt to resolve it.
     if os.path.sep in name: