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-rw-r--r--Doc/lib/libos.tex4
1 files changed, 3 insertions, 1 deletions
diff --git a/Doc/lib/libos.tex b/Doc/lib/libos.tex
index e7e1ac5..aa57217 100644
--- a/Doc/lib/libos.tex
+++ b/Doc/lib/libos.tex
@@ -141,7 +141,9 @@ Availability: \UNIX.
\begin{funcdesc}{getlogin}{}
Return the name of the user logged in on the controlling terminal of
the process. For most purposes, it is more useful to use the
-environment variable \envvar{LOGNAME} to find out who the user is.
+environment variable \envvar{LOGNAME} to find out who the user is,
+or \code{pwd.getpwuid(os.getuid())[0]} to get the login name
+of the currently effective user ID.
Availability: \UNIX.
\end{funcdesc}