@node updwtmpx @subsection @code{updwtmpx} @findex updwtmpx Documentation:@* @uref{https://www.kernel.org/doc/man-pages/online/pages/man3/updwtmpx.3.html,,man updwtmpx} Gnulib module: --- Portability problems fixed by Gnulib: @itemize @end itemize Portability problems not fixed by Gnulib: @itemize @item This function is missing on some platforms: macOS 11.1, FreeBSD 13.0, OpenBSD 6.7, Minix 3.1.8, AIX 5.1, HP-UX 11, Cygwin 1.5.x, mingw, MSVC 14, Android 9.0. @end itemize