FreeBSD 4.11 manual page repository

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tput, clear - terminal capability interface



      tput, clear - terminal capability interface


      tput [-T term] attribute


      The tput command makes terminal-dependent information available to users
      or shell applications.  When invoked as the clear utility, the screen
      will be cleared as if
            tput clear
      had been executed.  The options to tput are as follows:
      -T      The terminal name as specified in the termcap database, for exam‐
              ple, “vt100” or “xterm”.  If not specified, tput retrieves the
              “TERM” variable from the environment.
      The tput command outputs a string if the attribute is of type string; a
      number if it is of type integer.  Otherwise, tput exits 0 if the terminal
      has the capability and 1 if it does not, without further action.
      If the attribute is of type string, and takes arguments (e.g. cursor
      movement, the termcap “cm” sequence) the arguments are taken from the
      command line immediately following the attribute.
      The following special attributes are available:
      clear         Clear the screen (the termcap “cl” sequence).
      init          Initialize the terminal (the termcap “is” sequence).
      longname      Print the descriptive name of the user’s terminal type.
      reset         Reset the terminal (the termcap “rs” sequence).


      The exit value of tput is based on the last attribute specified.  If the
      attribute is of type string or of type integer, tput exits 0 if the
      attribute is defined for this terminal type and 1 if it is not.  If the
      attribute is of type boolean, tput exits 0 if the terminal has this
      attribute, and 1 if it does not.  The tput command exits 2 if any error
      termcap(5), terminfo(5)


      The tput command can’t really distinguish between different types of
      Some termcap entries depend upon having a ‘%’ in them that is just a ‘%’
      and nothing more.  Right now we just warn about them if they don’t have a
      valid type declaration.  These warnings are sent to stderr.


      The tput command appeared in 4.4BSD.


Based on BSD UNIX
FreeBSD is an advanced operating system for x86 compatible (including Pentium and Athlon), amd64 compatible (including Opteron, Athlon64, and EM64T), UltraSPARC, IA-64, PC-98 and ARM architectures. It is derived from BSD, the version of UNIX developed at the University of California, Berkeley. It is developed and maintained by a large team of individuals. Additional platforms are in various stages of development.