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Diffstat (limited to 'doc/html/man/clear.1.html')
| -rw-r--r-- | doc/html/man/clear.1.html | 41 |
1 files changed, 21 insertions, 20 deletions
diff --git a/doc/html/man/clear.1.html b/doc/html/man/clear.1.html index 853f05c32050..15d8ad5c39e3 100644 --- a/doc/html/man/clear.1.html +++ b/doc/html/man/clear.1.html @@ -71,10 +71,10 @@ </PRE><H2><a name="h2-OPTIONS">OPTIONS</a></H2><PRE> <STRONG>-T</STRONG> <EM>type</EM> - indicates the <EM>type</EM> of terminal. Normally this option is unneces- - sary, because the default is taken from the environment variable - <STRONG>TERM</STRONG>. If <STRONG>-T</STRONG> is specified, then the shell variables <STRONG>LINES</STRONG> and <STRONG>COL-</STRONG> - <STRONG>UMNS</STRONG> will also be ignored. + indicates the <EM>type</EM> of terminal. Normally this option is + unnecessary, because the default is taken from the environment + variable <STRONG>TERM</STRONG>. If <STRONG>-T</STRONG> is specified, then the shell variables <STRONG>LINES</STRONG> + and <STRONG>COLUMNS</STRONG> will also be ignored. <STRONG>-V</STRONG> reports the version of ncurses which was used in this program, and exits. The options are as follows: @@ -94,20 +94,21 @@ /usr/bin/tput ${1:+-T$1} clear 2> /dev/null exit - In 1989, when Keith Bostic revised the BSD <STRONG>tput</STRONG> command to make it sim- - ilar to the AT&T <STRONG>tput</STRONG>, he added a shell script for the <STRONG>clear</STRONG> command: + In 1989, when Keith Bostic revised the BSD <STRONG>tput</STRONG> command to make it + similar to the AT&T <STRONG>tput</STRONG>, he added a shell script for the <STRONG>clear</STRONG> + command: exec tput clear The remainder of the script in each case is a copyright notice. - The ncurses <STRONG>clear</STRONG> command began in 1995 by adapting the original BSD + The ncurses <STRONG>clear</STRONG> command began in 1995 by adapting the original BSD <STRONG>clear</STRONG> command (with terminfo, of course). The <STRONG>E3</STRONG> extension came later: - <STRONG>o</STRONG> In June 1999, xterm provided an extension to the standard control - sequence for clearing the screen. Rather than clearing just the + <STRONG>o</STRONG> In June 1999, xterm provided an extension to the standard control + sequence for clearing the screen. Rather than clearing just the visible part of the screen using printf '\033[2J' @@ -116,24 +117,24 @@ printf '\033[<STRONG>3</STRONG>J' - This is documented in <EM>XTerm</EM> <EM>Control</EM> <EM>Sequences</EM> as a feature origi- - nating with xterm. + This is documented in <EM>XTerm</EM> <EM>Control</EM> <EM>Sequences</EM> as a feature + originating with xterm. <STRONG>o</STRONG> A few other terminal developers adopted the feature, e.g., PuTTY in 2006. - <STRONG>o</STRONG> In April 2011, a Red Hat developer submitted a patch to the Linux - kernel, modifying its console driver to do the same thing. The - Linux change, part of the 3.0 release, did not mention xterm, + <STRONG>o</STRONG> In April 2011, a Red Hat developer submitted a patch to the Linux + kernel, modifying its console driver to do the same thing. The + Linux change, part of the 3.0 release, did not mention xterm, although it was cited in the Red Hat bug report (#683733) which led to the change. - <STRONG>o</STRONG> Again, a few other terminal developers adopted the feature. But + <STRONG>o</STRONG> Again, a few other terminal developers adopted the feature. But the next relevant step was a change to the <STRONG>clear</STRONG> program in 2013 to incorporate this extension. - <STRONG>o</STRONG> In 2013, the <STRONG>E3</STRONG> extension was overlooked in <STRONG>tput</STRONG> with the "clear" - parameter. That was addressed in 2016 by reorganizing <STRONG>tput</STRONG> to + <STRONG>o</STRONG> In 2013, the <STRONG>E3</STRONG> extension was overlooked in <STRONG>tput</STRONG> with the "clear" + parameter. That was addressed in 2016 by reorganizing <STRONG>tput</STRONG> to share its logic with <STRONG>clear</STRONG> and <STRONG>tset</STRONG>. @@ -141,15 +142,15 @@ Neither IEEE Std 1003.1/The Open Group Base Specifications Issue 7 (POSIX.1-2008) nor X/Open Curses Issue 7 documents tset or reset. - The latter documents <STRONG>tput</STRONG>, which could be used to replace this utility - either via a shell script or by an alias (such as a symbolic link) to + The latter documents <STRONG>tput</STRONG>, which could be used to replace this utility + either via a shell script or by an alias (such as a symbolic link) to run <STRONG>tput</STRONG> as <STRONG>clear</STRONG>. </PRE><H2><a name="h2-SEE-ALSO">SEE ALSO</a></H2><PRE> <STRONG><A HREF="tput.1.html">tput(1)</A></STRONG>, <STRONG><A HREF="terminfo.5.html">terminfo(5)</A></STRONG> - This describes <STRONG>ncurses</STRONG> version 6.2 (patch 20200215). + This describes <STRONG>ncurses</STRONG> version 6.2 (patch 20210109). |