I want to determine what \O in /etc/issue means. man issue: "NAME issue - pre-login message and identification file DESCRIPTION The file /etc/issue is a text file which contains a message or system identification to be printed before the login prompt. It may contain various @char and \char sequences, if supported by getty(1). FILES /etc/issue SEE ALSO getty(1), motd(5) " clock@kestrel:~$ man 1 getty No entry for getty in section 1 of the manual clock@kestrel:~$ man getty No manual entry for getty Reproducible: Always Steps to Reproduce: 1. 2. 3. Actual Results: no getty manpage Expected Results: getty manpage. It contains important information regarding /etc/issue. Portage 2.0.51.22-r2 (default-linux/x86/2005.0, gcc-3.3.5-20050130, glibc-2.3.5-r1, 2.6.11-gentoo-r9 i686) ================================================================= System uname: 2.6.11-gentoo-r9 i686 Intel(R) Pentium(R) M processor 1.50GHz Gentoo Base System version 1.6.13 dev-lang/python: 2.3.5 sys-apps/sandbox: 1.2.12 sys-devel/autoconf: 2.13, 2.59-r6 sys-devel/automake: 1.4_p6, 1.5, 1.6.3, 1.7.9-r1, 1.8.5-r3, 1.9.6 sys-devel/binutils: 2.15.92.0.2-r10 sys-devel/libtool: 1.5.18-r1 virtual/os-headers: 2.6.11-r2 ACCEPT_KEYWORDS="x86" AUTOCLEAN="yes" CBUILD="i686-pc-linux-gnu" CFLAGS="-O2 -mcpu=i686 -pipe" CHOST="i686-pc-linux-gnu" CONFIG_PROTECT="/etc /usr/kde/2/share/config /usr/kde/3.3/env /usr/kde/3.3/share/config /usr/kde/3.3/shutdown /usr/kde/3.4/env /usr/kde/3.4/share/config /usr/kde/3.4/shutdown /usr/kde/3/share/config /usr/lib/X11/xkb /usr/lib/mozilla/defaults/pref /usr/share/config /usr/share/texmf/dvipdfm/config/ /usr/share/texmf/dvips/config/ /usr/share/texmf/tex/generic/config/ /usr/share/texmf/tex/platex/config/ /usr/share/texmf/xdvi/ /var/qmail/control" CONFIG_PROTECT_MASK="/etc/gconf /etc/terminfo /etc/env.d" CXXFLAGS="" DISTDIR="/usr/portage/distfiles" FEATURES="autoconfig distlocks sandbox sfperms strict" GENTOO_MIRRORS="http://distfiles.gentoo.org http://distro.ibiblio.org/pub/Linux/distributions/gentoo" MAKEOPTS="-j2" PKGDIR="/usr/portage/packages" PORTAGE_TMPDIR="/var/tmp" PORTDIR="/usr/portage" SYNC="rsync://rsync.gentoo.org/gentoo-portage" USE="x86 X aac aalib alsa apm arts avi berkdb bitmap-fonts cdr crypt cups curl dga divx4linux dri dv dvd dvdread eds emboss encode esd exif fam ffmpeg fftw flac flash foomatic foomaticdb fortran ftp gd gdbm gif glut gnome gpm gstreamer gtk gtk2 guile icq imagemagick imap imlib ipv6 jabber jack java javascript jpeg kde ldap libcaca libg++ libwww live matroska mikmod ming mmap mmx mng motif mozilla mp3 mpeg mysql nas ncurses nls ogg oggvorbis opengl oss pam pdflib perl php png python qt quicktime readline real ruby samba sdl sharedmem shorten slang socks5 speex spell sse ssl svg svga tcltk tcpd tetex theora threads tiff tls truetype truetype-fonts type1-fonts unicode vorbis wifi win32codecs wmf xine xinerama xml xml2 xmms xpm xv xvid zlib userland_GNU kernel_linux elibc_glibc" Unset: ASFLAGS, CTARGET, LANG, LC_ALL, LDFLAGS, LINGUAS, PORTDIR_OVERLAY
Try man agetty.
The man issue says clearly "getty(1)". Therefore I should type "man getty" and not "man agetty". In this case the man issue should be fixed to contain "agetty(1)" instead. It doesn't work for you.
See bug #81946; this has been fixed in util-linux-2.12p-r1 and higher. It's not yet in any version marked stable though.