mdw@git.distorted.org.uk Git - qmail/blob - env.3

   1 .TH env 3
   2 .SH NAME
   3 env \- manage the environment
   4 .SH SYNTAX
   5 .B #include <env.h>
   6
   7 char **\fBenviron\fP;
   8
   9 char *\fBenv_get\fP(\fIname\fR);
  10 .br
  11 char *\fBenv_pick\fP();
  12
  13 char *\fIname\fR;
  14 .SH DESCRIPTION
  15 The environment,
  16 .BR environ ,
  17 is a 0-terminated array of 0-terminated strings,
  18 called environment variables.
  19 Each environment variable is of the form
  20 .IR name\fB=\fIvalue .
  21
  22 .B env_get
  23 returns the value of the first variable whose name is
  24 .IR name ,
  25 or 0 if there is no such variable.
  26
  27 .B env_pick
  28 returns any variable in the environment,
  29 or 0 if the environment is empty.
  30 .SH "SEE ALSO"
  31 environ(7)