diff --git a/nshlib/nsh.h b/nshlib/nsh.h
index 28ebd814c..b02fb0dce 100644
--- a/nshlib/nsh.h
+++ b/nshlib/nsh.h
@@ -797,31 +797,31 @@ typedef CODE int (*nsh_direntry_handler_t)(FAR struct nsh_vtbl_s *vtbl,
  * Public Data
  ****************************************************************************/
 
-extern const char g_nshgreeting[];
+extern const IOBJ char g_nshgreeting[];
 #if defined(CONFIG_NSH_TELNET_LOGIN) && defined(CONFIG_NSH_TELNET)
-extern const char g_telnetgreeting[];
-extern const char g_userprompt[];
-extern const char g_passwordprompt[];
-extern const char g_loginsuccess[];
-extern const char g_badcredentials[];
-extern const char g_loginfailure[];
+extern const IOBJ char g_telnetgreeting[];
+extern const IOBJ char g_userprompt[];
+extern const IOBJ char g_passwordprompt[];
+extern const IOBJ char g_loginsuccess[];
+extern const IOBJ char g_badcredentials[];
+extern const IOBJ char g_loginfailure[];
 #endif
-extern const char g_nshprompt[];
-extern const char g_nshsyntax[];
-extern const char g_fmtargrequired[];
-extern const char g_fmtnomatching[];
-extern const char g_fmtarginvalid[];
-extern const char g_fmtargrange[];
-extern const char g_fmtcmdnotfound[];
-extern const char g_fmtnosuch[];
-extern const char g_fmttoomanyargs[];
-extern const char g_fmtdeepnesting[];
-extern const char g_fmtcontext[];
-extern const char g_fmtcmdfailed[];
-extern const char g_fmtcmdoutofmemory[];
-extern const char g_fmtinternalerror[];
+extern const IOBJ char g_nshprompt[];
+extern const IOBJ char g_nshsyntax[];
+extern const IOBJ char g_fmtargrequired[];
+extern const IOBJ char g_fmtnomatching[];
+extern const IOBJ char g_fmtarginvalid[];
+extern const IOBJ char g_fmtargrange[];
+extern const IOBJ char g_fmtcmdnotfound[];
+extern const IOBJ char g_fmtnosuch[];
+extern const IOBJ char g_fmttoomanyargs[];
+extern const IOBJ char g_fmtdeepnesting[];
+extern const IOBJ char g_fmtcontext[];
+extern const IOBJ char g_fmtcmdfailed[];
+extern const IOBJ char g_fmtcmdoutofmemory[];
+extern const IOBJ char g_fmtinternalerror[];
 #ifndef CONFIG_DISABLE_SIGNALS
-extern const char g_fmtsignalrecvd[];
+extern const IOBJ char g_fmtsignalrecvd[];
 #endif
 
 /****************************************************************************
diff --git a/nshlib/nsh_console.c b/nshlib/nsh_console.c
index 0c2b54ac3..b0ad34745 100644
--- a/nshlib/nsh_console.c
+++ b/nshlib/nsh_console.c
@@ -53,10 +53,6 @@
 #include "nsh.h"
 #include "nsh_console.h"
 
-/****************************************************************************
- * Pre-processor Definitions
- ****************************************************************************/
-
 /****************************************************************************
  * Private Types
  ****************************************************************************/
@@ -93,14 +89,6 @@ static void nsh_consoleundirect(FAR struct nsh_vtbl_s *vtbl,
 static void nsh_consoleexit(FAR struct nsh_vtbl_s *vtbl, int exitstatus)
   noreturn_function;
 
-/****************************************************************************
- * Private Data
- ****************************************************************************/
-
-/****************************************************************************
- * Public Data
- ****************************************************************************/
-
 /****************************************************************************
  * Private Functions
  ****************************************************************************/
@@ -173,7 +161,8 @@ static void nsh_closeifnotclosed(struct console_stdio_s *pstate)
  *
  ****************************************************************************/
 
-static ssize_t nsh_consolewrite(FAR struct nsh_vtbl_s *vtbl, FAR const void *buffer, size_t nbytes)
+static ssize_t nsh_consolewrite(FAR struct nsh_vtbl_s *vtbl,
+                                FAR const void *buffer, size_t nbytes)
 {
 #if CONFIG_NFILE_DESCRIPTORS > 0
   FAR struct console_stdio_s *pstate = (FAR struct console_stdio_s *)vtbl;
@@ -214,7 +203,7 @@ static ssize_t nsh_consolewrite(FAR struct nsh_vtbl_s *vtbl, FAR const void *buf
  ****************************************************************************/
 
 static int nsh_consoleoutput(FAR struct nsh_vtbl_s *vtbl,
-                             FAR const char *fmt, ...)
+                             FAR const IPTR char *fmt, ...)
 {
 #if CONFIG_NFILE_DESCRIPTORS > 0
   FAR struct console_stdio_s *pstate = (FAR struct console_stdio_s *)vtbl;
@@ -442,7 +431,9 @@ static void nsh_consoleexit(FAR struct nsh_vtbl_s *vtbl, int exitstatus)
 
 FAR struct console_stdio_s *nsh_newconsole(void)
 {
-  struct console_stdio_s *pstate = (struct console_stdio_s *)zalloc(sizeof(struct console_stdio_s));
+  FAR struct console_stdio_s *pstate =
+    (FAR struct console_stdio_s *)zalloc(sizeof(struct console_stdio_s));
+
   if (pstate)
     {
       /* Initialize the call table */
diff --git a/nshlib/nsh_console.h b/nshlib/nsh_console.h
index 8ad9c7b37..4371f7802 100644
--- a/nshlib/nsh_console.h
+++ b/nshlib/nsh_console.h
@@ -114,8 +114,9 @@ struct nsh_vtbl_s
   void (*addref)(FAR struct nsh_vtbl_s *vtbl);
   void (*release)(FAR struct nsh_vtbl_s *vtbl);
 #endif
-  ssize_t (*write)(FAR struct nsh_vtbl_s *vtbl, FAR const void *buffer, size_t nbytes);
-  int (*output)(FAR struct nsh_vtbl_s *vtbl, FAR const char *fmt, ...);
+  ssize_t (*write)(FAR struct nsh_vtbl_s *vtbl, FAR const void *buffer,
+                   size_t nbytes);
+  int (*output)(FAR struct nsh_vtbl_s *vtbl, FAR const IOBJ char *fmt, ...);
   FAR char *(*linebuffer)(FAR struct nsh_vtbl_s *vtbl);
 #if CONFIG_NFILE_DESCRIPTORS > 0
   void (*redirect)(FAR struct nsh_vtbl_s *vtbl, int fd, FAR uint8_t *save);
diff --git a/nshlib/nsh_parse.c b/nshlib/nsh_parse.c
index e9d3aef97..7aab79fb1 100644
--- a/nshlib/nsh_parse.c
+++ b/nshlib/nsh_parse.c
@@ -219,47 +219,47 @@ static const char g_nullstring[]      = "";
  */
 
 #if CONFIG_VERSION_MAJOR != 0 || CONFIG_VERSION_MINOR != 0
-const char g_nshgreeting[]       = "\nNuttShell (NSH) NuttX-" CONFIG_VERSION_STRING "\n";
+const IOBJ char g_nshgreeting[]    = "\nNuttShell (NSH) NuttX-" CONFIG_VERSION_STRING "\n";
 #else
-const char g_nshgreeting[]       = "\nNuttShell (NSH)\n";
+const IOBJ char g_nshgreeting[]    = "\nNuttShell (NSH)\n";
 #endif
 
 /* Telnet login prompts */
 
 #if defined(CONFIG_NSH_TELNET_LOGIN) && defined(CONFIG_NSH_TELNET)
-const char g_telnetgreeting[]    = "\nWelcome to NuttShell(NSH) Telnet Server...\n";
-const char g_userprompt[]        = "login: ";
-const char g_passwordprompt[]    = "password: ";
-const char g_loginsuccess[]      = "\nUser Logged-in!\n";
-const char g_badcredentials[]    = "\nInvalid username or password\n";
-const char g_loginfailure[]      = "Login failed!\n";
+const IOBJ char g_telnetgreeting[] = "\nWelcome to NuttShell(NSH) Telnet Server...\n";
+const IOBJ char g_userprompt[]     = "login: ";
+const IOBJ char g_passwordprompt[] = "password: ";
+const IOBJ char g_loginsuccess[]   = "\nUser Logged-in!\n";
+const IOBJ char g_badcredentials[] = "\nInvalid username or password\n";
+const IOBJ char g_loginfailure[]   = "Login failed!\n";
 #endif
 
 /* The NSH prompt */
 
-const char g_nshprompt[]         = "nsh> ";
+const IOBJ char g_nshprompt[]      = "nsh> ";
 
 /* Common, message formats */
 
-const char g_nshsyntax[]         = "nsh: %s: syntax error\n";
-const char g_fmtargrequired[]    = "nsh: %s: missing required argument(s)\n";
-const char g_fmtnomatching[]     = "nsh: %s: no matching %s\n";
-const char g_fmtarginvalid[]     = "nsh: %s: argument invalid\n";
-const char g_fmtargrange[]       = "nsh: %s: value out of range\n";
-const char g_fmtcmdnotfound[]    = "nsh: %s: command not found\n";
-const char g_fmtnosuch[]         = "nsh: %s: no such %s: %s\n";
-const char g_fmttoomanyargs[]    = "nsh: %s: too many arguments\n";
-const char g_fmtdeepnesting[]    = "nsh: %s: nesting too deep\n";
-const char g_fmtcontext[]        = "nsh: %s: not valid in this context\n";
+const IOBJ char g_nshsyntax[]      = "nsh: %s: syntax error\n";
+const IOBJ char g_fmtargrequired[] = "nsh: %s: missing required argument(s)\n";
+const IOBJ char g_fmtnomatching[]  = "nsh: %s: no matching %s\n";
+const IOBJ char g_fmtarginvalid[]  = "nsh: %s: argument invalid\n";
+const IOBJ char g_fmtargrange[]    = "nsh: %s: value out of range\n";
+const IOBJ char g_fmtcmdnotfound[] = "nsh: %s: command not found\n";
+const IOBJ char g_fmtnosuch[]      = "nsh: %s: no such %s: %s\n";
+const IOBJ char g_fmttoomanyargs[] = "nsh: %s: too many arguments\n";
+const IOBJ char g_fmtdeepnesting[] = "nsh: %s: nesting too deep\n";
+const IOBJ char g_fmtcontext[]     = "nsh: %s: not valid in this context\n";
 #ifdef CONFIG_NSH_STRERROR
-const char g_fmtcmdfailed[]      = "nsh: %s: %s failed: %s\n";
+const IOBJ char g_fmtcmdfailed[]   = "nsh: %s: %s failed: %s\n";
 #else
-const char g_fmtcmdfailed[]      = "nsh: %s: %s failed: %d\n";
+const IOBJ char g_fmtcmdfailed[]      = "nsh: %s: %s failed: %d\n";
 #endif
-const char g_fmtcmdoutofmemory[] = "nsh: %s: out of memory\n";
-const char g_fmtinternalerror[]  = "nsh: %s: Internal error\n";
+const IOBJ char g_fmtcmdoutofmemory[] = "nsh: %s: out of memory\n";
+const IOBJ char g_fmtinternalerror[]  = "nsh: %s: Internal error\n";
 #ifndef CONFIG_DISABLE_SIGNALS
-const char g_fmtsignalrecvd[]    = "nsh: %s: Interrupted by signal\n";
+const IOBJ char g_fmtsignalrecvd[]    = "nsh: %s: Interrupted by signal\n";
 #endif
 
 /****************************************************************************