ul(1) [x11r4 man page]
UL(1) BSD General Commands Manual UL(1) NAME
ul -- do underlining SYNOPSIS
ul [-i] [-t terminal] [file ...] DESCRIPTION
The ul utility reads the named files (or standard input if none are given) and translates occurrences of underscores to the sequence which indicates underlining for the terminal in use, as specified by the environment variable TERM. The file /etc/termcap is read to determine the appropriate sequences for underlining. If the terminal is incapable of underlining, but is capable of a standout mode then that is used instead. If the terminal can overstrike, or handles underlining automatically, ul degenerates to cat(1). If the terminal cannot underline, underlining is ignored. During the translation some other special characters also get translated. E.g. TAB gets expanded to spaces. The following options are available: -i Underlining is indicated by a separate line containing appropriate dashes '-'; this is useful when you want to look at the underlin- ing which is present in an nroff(1) output stream on a CRT-terminal. -t terminal Overrides the terminal type specified in the environment with terminal. ENVIRONMENT
The LANG, LC_ALL, LC_CTYPE and TERM environment variables affect the execution of ul as described in environ(7). EXIT STATUS
The ul utility exits 0 on success, and >0 if an error occurs. SEE ALSO
colcrt(1), man(1), nroff(1) HISTORY
The ul command appeared in 3.0BSD. BUGS
The nroff(1) command usually outputs a series of backspaces and underlines intermixed with the text to indicate underlining. No attempt is made to optimize the backward motion. BSD August 4, 2004 BSD
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UL(1) User Commands UL(1) NAME
ul - do underlining SYNOPSIS
ul [options] [file ...] DESCRIPTION
ul reads the named files (or standard input if none are given) and translates occurrences of underscores to the sequence which indicates underlining for the terminal in use, as specified by the environment variable TERM. The terminfo database is read to determine the appro- priate sequences for underlining. If the terminal is incapable of underlining but is capable of a standout mode, then that is used instead. If the terminal can overstrike, or handles underlining automatically, ul degenerates to cat(1). If the terminal cannot under- line, underlining is ignored. OPTIONS
-i, --indicated Underlining is indicated by a separate line containing appropriate dashes `-'; this is useful when you want to look at the underlin- ing which is present in an nroff output stream on a crt-terminal. -t, -T, --terminal terminal Overrides the terminal type specified in the environment with TERM. -V, --version Display version information and exit. -h, --help Display a help text and exit. ENVIRONMENT
The following environment variable is used: TERM The TERM variable is used to relate a tty device with its device capability description (see terminfo(5)). TERM is set at login time, either by the default terminal type specified in /etc/ttys or as set during the login process by the user in their login file (see setenv(1)). SEE ALSO
colcrt(1), login(1), man(1), nroff(1), setenv(1), terminfo(5) BUGS
Nroff usually outputs a series of backspaces and underlines intermixed with the text to indicate underlining. No attempt is made to opti- mize the backward motion. HISTORY
The ul command appeared in 3.0BSD. AVAILABILITY
The ul command is part of the util-linux package and is available from Linux Kernel Archive <ftp://ftp.kernel.org/pub/linux/utils/util- linux/>. util-linux September 2011 UL(1)