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sh(1)									 sh(1)

NAME
       sh - Shell, the standard command language interpreter

DESCRIPTION
       [Tru64  UNIX]  Tru64  UNIX  provides  two command interpreters with the
       name sh.	 The XCU5.0 and POSIX.2 compliant command  interpreter	sh  is
       available  in the file /usr/bin/posix/sh and is described in the sh(1p)
       reference page.	The Bourne shell, historically known as sh, is	avail‐
       able  in	 the file /usr/bin/sh and is described in the sh(1b) reference
       page.

       [Tru64 UNIX]  Your initial, or login, shell is determined by your entry
       in  the	file /etc/passwd. This file can be changed only by your system
       administrator. You must use whatever procedures are in  place  at  your
       location to have this entry changed.

       [Tru64 UNIX]  If available on your system, you may use the passwd -s or
       the chsh commands to change your login shell.

					Note

       This option is not available if your site manages passwords through the
       Network	Information  Service  (NIS)  facility.	Check with your system
       administrator.

       [Tru64 UNIX]  Subsequent shells spawned from the initial	 shell	depend
       on  the	value in the environment variable BIN_SH.  If this variable is
       set to xpg4, the POSIX shell is started. If this	 variable  is  set  to
       svr4,  an SVR4 compliant version of the shell is started. If this vari‐
       able is unset, the Bourne shell is started. If this variable is set  to
       any  other  value,  an  error  is  reported  and the results are unpre‐
       dictable. See the EXAMPLES section  for	information  on	 setting  this
       variable.

NOTES
       [Tru64  UNIX]  With Tru64 UNIX Version 4.0 the Korn shell, /usr/bin/ksh
       is the same as the POSIX shell /usr/bin/posix/sh.

RESTRICTIONS
       [Tru64 UNIX]  The file /etc/shells must include entries	for  both  the
       POSIX  shell  /usr/bin/posix/sh	and  the Bourne shell, /usr/bin/sh. If
       this file is incorrect, see your system administrator.

EXAMPLES
       Using the Bourne, Korn, or POSIX shell, to set the variable  BIN_SH  to
       use  the POSIX/XCU5.0 compliant shell, enter: BIN_SH=xpg4 export BIN_SH
       Using the Bourne, Korn, or POSIX shell, to set the variable  BIN_SH  to
       use  the POSIX/XCU5.0 compliant shell, enter: BIN_SH=svr4 export BIN_SH
       Using the Bourne, Korn, or POSIX shell, to unset the  variable  BIN_SH,
       enter:  unset  BIN_SH Using the C/ shell, to set the variable BIN_SH to
       use the POSIX/XCU5.0 compliant shell, enter: setenv BIN_SH  xpg4	 Using
       the  C/	shell, to set the variable BIN_SH to use the POSIX/XCU5.0 com‐
       pliant shell, enter: setenv BIN_SH svr4 Using the C/  shell,  to	 unset
       the variable BIN_SH, enter: unsetenv BIN_SH

FILES
       User  profile.	Contains  user	information, including the login shell
       name.  Contains the names of available and permitted shells.

SEE ALSO
       Commands:  csh(1), ksh(1), Bourne shell	sh(1b),	 POSIX	shell  sh(1p),
       passwd(1)

       Files:  passwd(4), shells(4)

       Standards:  standards(5)

									 sh(1)

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