env.3
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     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)