<title>Enviornmental variable functions</title> <head> <script language="JavaScript"> </script> </head> <body bgcolor="#ffffcc"> <hr> <center> <h1>Enviornmental variable functions</h1> </center> <hr> <p> The following functions allow you to manipulate environmental variables. <p> <img src=../../GRAPHICS/man.gif> <a href=../MAN/getenv.htm>getenv</a> Get the value of an environmental variable. <p> <img src=../../GRAPHICS/man.gif> <a href=../MAN/putenv.htm>putenv</a> Change or add an environmental variable. <p> <img src=../../GRAPHICS/man.gif> <a href=../MAN/setenv.htm>setenv</a> Change or add an environmental variable. <p> <img src=../../GRAPHICS/man.gif> <a href=../MAN/unsetenv.htm>unsetenv</a> Remove an environmental variable. <p> <img src=../../GRAPHICS/computer.gif align=center> <a href=../EXAMPLES/printenv.c>printenv</a> program. <p> <p> <hr> <p> <center> <table border=2 width="80%" bgcolor="ivory"> <tr align=center> <td width="25%"> <a href="../cref.html"> 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="funcref.htm"> Functions</a> </td> </tr> </table> </center> <p> <hr> <address>Martin Leslie </address><p> </body> </html>