NAME
luit - Locale and ISO 2022 support for Unicode terminals
SYNOPSIS
luit [ options ] [ -- ] [ program [ args ] ]
DESCRIPTION
Luit is a filter that can be run between an arbitrary application and a UTF-8 terminal emulator. It will convert application output from the locale's encoding into UTF-8, and convert terminal input from UTF-8 into the locale's encoding. An application may also request switching to a different output encoding using ISO 2022 and ISO 6429 escape sequences. Use of this feature is discouraged: multilingual applications should be modified to directly generate UTF-8 instead. Luit is usually invoked transparently by the terminal emulator. For information about running luit from the command line, see EXAMPLES below.
OPTIONS
-h Display some summary help and quit. -list List the supported charsets and encodings, then quit. -V Print luit's version and quit. -v Be verbose. -c Function as a simple converter from standard input to standard output. -p In startup, establish a handshake between parent and child processes. This is needed for some systems, e.g., FreeBSD. -x Exit as soon as the child dies. This may cause luit to lose data at the end of the child's output. -argv0 name Set the child's name (as passed in argv[0]). -encoding encoding Set up luit to use encoding rather than the current locale's encoding. +oss Disable interpretation of single shifts in application output. +ols Disable interpretation of locking shifts in application output. +osl Disable interpretation of character set selection sequences in application output. +ot Disable interpretation of all sequences and pass all sequences in application output to the terminal unchanged. This may lead to interesting results. -k7 Generate seven-bit characters for keyboard input. +kss Disable generation of single-shifts for keyboard input. +kssgr Use GL codes after a single shift for keyboard input. By default, GR codes are generated after a single shift when generating eight-bit keyboard input. -kls Generate locking shifts (SO/SI) for keyboard input. -gl gn Set the initial assignment of GL. The argument should be one of g0, g1, g2 or g3. The default depends on the locale, but is usually g0. -gr gk Set the initial assignment of GR. The default depends on the locale, and is usually g2 except for EUC locales, where it is g1. -g0 charset Set the charset initially selected in G0. The default depends on the locale, but is usually ASCII. -g1 charset Set the charset initially selected in G1. The default depends on the locale. -g2 charset Set the charset initially selected in G2. The default depends on the locale. -g3 charset Set the charset initially selected in G3. The default depends on the locale. -ilog filename Log into filename all the bytes received from the child. -olog filename Log into filename all the bytes sent to the terminal emulator. -alias filename the locale alias file (default: /usr/share/X11/locale/locale.alias). -- End of options.
EXAMPLES
The most typical use of luit is to adapt an instance of XTerm to the locale's encoding. Current versions of XTerm invoke luit automatically when it is needed. If you are using an older release of XTerm, or a different terminal emulator, you may invoke luit manually: $ xterm -u8 -e luit If you are running in a UTF-8 locale but need to access a remote machine that doesn't support UTF-8, luit can adapt the remote output to your terminal: $ LC_ALL=fr_FR luit ssh legacy-machine Luit is also useful with applications that hard-wire an encoding that is different from the one normally used on the system or want to use legacy escape sequences for multilingual output. In particular, versions of Emacs that do not speak UTF-8 well can use luit for multilingual output: $ luit -encoding 'ISO 8859-1' emacs -nw And then, in Emacs, M-x set-terminal-coding-system RET iso-2022-8bit-ss2 RET
FILES
/usr/share/X11/locale/locale.alias The file mapping locales to locale encodings.
SECURITY
On systems with SVR4 ("Unix-98") ptys (Linux version 2.2 and later, SVR4), luit should be run as the invoking user. On systems without SVR4 ("Unix-98") ptys (notably BSD variants), running luit as an ordinary user will leave the tty world-writable; this is a security hole, and luit will generate a warning (but still accept to run). A possible solution is to make luit suid root; luit should drop privileges sufficiently early to make this safe. However, the startup code has not been exhaustively audited, and the author takes no responsibility for any resulting security issues. Luit will refuse to run if it is installed setuid and cannot safely drop privileges.
BUGS
None of this complexity should be necessary. Stateless UTF-8 throughout the system is the way to go. Charsets with a non-trivial intermediary byte are not yet supported. Selecting alternate sets of control characters is not supported and will never be.
SEE ALSO
xterm(1), unicode(7), utf-8(7), charsets(7). Character Code Structure and Extension Techniques (ISO 2022, ECMA-35). Control Functions for Coded Character Sets (ISO 6429, ECMA-48).
AUTHOR
The version of Luit included in this X.Org Foundation release was originally written by Juliusz Chroboczek <jch@freedesktop.org> for the XFree86 Project and includes additional contributions from Thomas E. Dickey required for newer releases of xterm(1).
More Linux Commands
manpages/tgetstr.3ncurses.html
tgetstr(3ncurses) - direct curses interface to the terminfo
These routines are included as a conversion aid for programs that use the termcap library. Their parameters are the same and the routines are emulated using the
manpages/pkg-config.1.html
pkg-config(1) - Return metainformation about installed libra
The pkg-config program is used to retrieve information about installed libraries in the system. It is typically used to compile and link against one or more lib
manpages/menu_fore.3menu.html
menu_fore(3menu) - color and attribute control for menus....
The function set_menu_fore sets the foreground attribute of menu. This is the highlight used for selected menu items. menu_fore returns the foreground attribute
manpages/gnutls_openpgp_privkey_export.3.html
gnutls_openpgp_privkey_export(3) - API function (Man Page)
gnutls_openpgp_privkey_export.3 - This function will convert the given key to RAW or Base64 format. If the buffer provided is not long enough to hold the output
manpages/ss.8.html
ss(8) - another utility to investigate sockets (Man Page)...
ss is used to dump socket statistics. It allows showing information similar to netstat. It can display more TCP and state informations than other tools. OPTIONS
manpages/endttyent.3.html
endttyent(3) - get ttys file entry - Linux manual page......
endttyent.3 - These functions provide an interface to the file _PATH_TTYS (e.g., /etc/ttys). The function setttyent() opens the file or rewinds it if already op
manpages/migrate_pages.2.html
migrate_pages(2) - move all pages in a process to another se
migrate_pages() attempts to move all pages of the process pid that are in memory nodes old_nodes to the memory nodes in new_nodes. Pages not located in any node
manpages/wireshark.1.html
wireshark(1) - Interactively dump and analyze network traffi
Wireshark is a GUI network protocol analyzer. It lets you interactively browse packet data from a live network or from a previously saved capture file. Wireshar
manpages/mvinstr.3ncurses.html
mvinstr(3ncurses) - get a string of characters from a curses
These routines return a string of characters in str, extracted starting at the current cursor position in the named window. Attributes are stripped from the cha
manpages/fud.8.html
fud(8) - provide information about user mailboxes (ManPage)
FUD is a long lived datagram daemon started from master that provides information about when a user last read their mail, when mail last arrived in a users mail
manpages/zshtcpsys.1.html
zshtcpsys(1) - zsh tcp system (Commands - Linux man page)...
A module zsh/net/tcp is provided to provide network I/O over TCP/IP from within the shell; see its description in zshmodules(1) . This manual page describes a f
manpages/surfaces.6x.html
surfaces(6x) - Draws some interesting 3d parametric surfaces
This draws one of several three dimensional parametric surfaces. OPTIONS -visual visual Specify which visual to use. Legal values are the name of a visual class
