<TITLE>setenv</TITLE> <body bgcolor="#ffffcc"> <hr> <pre> <h3>SETENV(3) Linux Programmer's Manual SETENV(3) </h3> <h3>NAME </h3> setenv - change or add an environment variable <h3>SYNOPSIS </h3> #include <stdlib.h> int setenv(const char *name, const char *value, int overwrite); void unsetenv(const char *name); <h3>DESCRIPTION </h3> The setenv() function adds the variable name to the envi- ronment with the value value, if name does not already exist. If name does exist in the environment, then its value is changed to value if overwrite is non-zero; if overwrite is zero, then the value of name is not changed. The unsetenv() function deletes the variable name from the environment. <h3>RETURN VALUE </h3> The setenv() function returns zero on success, or -1 if there was insufficient space in the environment. <h3>CONFORMING TO </h3> BSD 4.3 </pre> <hr> <h3>SEE ALSO </h3><p> <a href=getenv.htm>getenv</a>, <a href=putenv.htm>putenv</a>, <pre> <h3>BSD April 4, 1993 1 </h3> </pre> <P> <hr> <p> <center> <table border=2 width=80%> <tr align=center> <td width=25%> <a href=../index.htm>Top</a> </td><td width=25%> <a href=../master_index.html>Master Index</a> </td><td width=25%> <a href=../SYNTAX/keywords.html>Keywords</a> </td><td width=25%> <a href=../FUNCTIONS/index.htm>Functions</a> </td> </tr> </table> </center> <p> <hr> This manual page was brought to you by <i>mjl_man V-2.0</i>
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