<TITLE>putenv</TITLE> <body bgcolor="#ffffcc"> <hr> <pre> <h3>PUTENV(3) Linux Programmer's Manual PUTENV(3) </h3> <h3>NAME </h3> putenv - change or add an environment variable <h3>SYNOPSIS </h3> #include <stdlib.h> int putenv(const char *string); <h3>DESCRIPTION </h3> The putenv() function adds or changes the value of envi- ronment variables. The argument string is of the form name = value. If name does not already exist in the envi- ronment, then string is added to the environment. If name does exist, then the value of name in the environment is changed to value. <h3>RETURN VALUE </h3> The putenv() function returns zero on success, or -1 if an error occurs. <h3>ERRORS </h3> ENOMEM Insufficient space to allocate new environment. <h3>CONFORMING TO </h3> SVID 3, POSIX, BSD 4.3 </pre> <hr> <h3>SEE ALSO </h3><p> <a href=getenv.htm>getenv</a>, <a href=setenv.htm>setenv</a>, <a href=unsetenv.htm>unsetenv</a>, <pre> <h3>GNU April 8, 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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