79 lines
2.6 KiB
HTML
79 lines
2.6 KiB
HTML
<head>
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<title>getenv(3) - Plan 9 from User Space</title>
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<meta content="text/html; charset=utf-8" http-equiv=Content-Type>
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</head>
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<body bgcolor=#ffffff>
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<table border=0 cellpadding=0 cellspacing=0 width=100%>
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<tr height=10><td>
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<tr><td width=20><td>
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<tr><td width=20><td><b>GETENV(3)</b><td align=right><b>GETENV(3)</b>
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<tr><td width=20><td colspan=2>
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<br>
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<p><font size=+1><b>NAME </b></font><br>
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<table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td>
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getenv, putenv – access environment variables<br>
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</table>
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<p><font size=+1><b>SYNOPSIS </b></font><br>
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<table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td>
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<tt><font size=+1>#include <u.h><br>
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#include <libc.h>
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<table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table>
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</font></tt>
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<tt><font size=+1>char* getenv(char *name)<br>
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int putenv(char *name, char *val)<br>
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</font></tt>
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</table>
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<p><font size=+1><b>DESCRIPTION </b></font><br>
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<table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td>
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<i>Getenv</i> fetches the environment value associated with <i>name</i> into
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memory allocated with <a href="../man3/malloc.html"><i>malloc</i>(3)</a>, 0-terminates it, and returns
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a pointer to that area. If no file exists, 0 is returned.
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<table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table>
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<i>Putenv</i> sets the environment value associated with <i>name</i> to <i>val</i>.<br>
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</table>
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<p><font size=+1><b>SOURCE </b></font><br>
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<table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td>
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<tt><font size=+1>/usr/local/plan9/src/lib9/getenv.c<br>
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</font></tt>
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</table>
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<p><font size=+1><b>DIAGNOSTICS </b></font><br>
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<table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td>
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Sets <i>errstr</i>.<br>
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</table>
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<p><font size=+1><b>BUGS </b></font><br>
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<table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td>
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To avoid name conflicts with the underlying system, <i>getenv</i> and
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<i>putenv</i> are preprocessor macros defined as <i>p9getenv</i> and <i>p9putenv</i>;
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see <a href="../man3/intro.html"><i>intro</i>(3)</a>.<br>
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</table>
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<td width=20>
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<tr height=20><td>
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</table>
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<!-- TRAILER -->
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<table border=0 cellpadding=0 cellspacing=0 width=100%>
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<tr height=15><td width=10><td><td width=10>
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<tr><td><td>
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<center>
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<a href="../../"><img src="../../dist/spaceglenda100.png" alt="Space Glenda" border=1></a>
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</center>
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</table>
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<!-- TRAILER -->
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</body></html>
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