environ man page on Tru64

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environ(5)							    environ(5)

NAME
       environ - User environment

SYNOPSIS
       extern char **environ;

DESCRIPTION
       An  array  of  strings  called the environment is made available by the
       execve() function when a process begins.	 By convention	these  strings
       have  the form name=value. The following names are used by various com‐
       mands: A startup list of commands read by ex, edit, and vi.   A	user's
       login  directory,  set  by  login  from	the password file passwd.  The
       sequence of directories, separated by colons, searched by csh, sh, sys‐
       tem,  execvp, etc, when looking for an executable file.	PATH is set to
       :/usr/ucb:/bin:/usr/bin initially by login.  The name  of  the  default
       printer	to  be	used  by lpr, lpq, and lprm.  The full pathname of the
       user's login shell.  The kind of terminal for which  output  is	to  be
       prepared. This information is used by commands, such as nroff which may
       exploit special terminal capabilities. � .\" See	 /usr/share/misc/term‐
       cap for a list of terminal types. .\"from TP " .\" Bold under TP !" -->
       The string describing the terminal in the  TERM	environment  variable,
       or,  if	it  begins with a / (slash), the name of the termcap file. See
       TERMPATH below.	A sequence of pathnames of termcap files, separated by
       colons  or  spaces, which are searched for terminal descriptions in the
       order listed.  Having no	 TERMPATH  is  equivalent  to  a  TERMPATH  of
       $HOME/.termcap:/etc/termcap.  TERMPATH is ignored if TERMCAP contains a
       full pathname.  The login name of the user.

       Further names may be placed in the environment by  the  export  command
       and  name=value	arguments  in  sh, or by the setenv command if you use
       csh. It is unwise to change certain sh variables	 that  are  frequently
       exported by files, such as MAIL, PS1, PS2, and IFS.

SEE ALSO
       Functions: exec(2), system(3)

       Commands: csh(1), ex(1), login(1), sh(1)

								    environ(5)
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