ul man page on Oracle

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UL(1)				 User Commands				 UL(1)

       ul - do underlining

       ul [options] [file ...]

       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 auto‐
       matically, ul degenerates to cat(1).  If the terminal cannot underline,
       underlining is ignored.

       -i, --indicated
	      Underlining is indicated by a separate line containing appropri‐
	      ate dashes `-'; this is useful when you  want  to	 look  at  the
	      underlining which is present in an nroff output stream on a crt-

       -t, -T, --terminal terminal
	      Overrides the terminal type specified in	the  environment  with

       -V, --version
	      Display version information and exit.

       -h, --help
	      Display a help text and exit.

       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)).

       colcrt(1), login(1), man(1), nroff(1), setenv(1), terminfo(5)

       Nroff  usually outputs a series of backspaces and underlines intermixed
       with the text to indicate underlining.  No attempt is made to  optimize
       the backward motion.

       The ul command appeared in 3.0BSD.

       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-

util-linux			September 2011				 UL(1)

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