jfrench@photon.tamu.edu (Jeff French) (02/04/90)
Does my Xenix '286 ver. 2.1.1 have a "clear screen" funtion that I am
overlooking? Under MS/DOS the command is "cls", and on SunOS it's "clear".
Currently I have a script that cats an empty file to the screen. This works
but leaves the cursor in the lower left hand corner of the screen.
I have RTFM 'till I'm blue in the face. Any suggestions would be appreciated.
Please excuse my ignorance if their is a blatently simple solution. Thanks!
---------------------------------------------------------------------
jfrench@cssuN.tamu.edu Jeff French "Gig-Em Aggies"
---------------------------------------------------------------------neal@mnopltd.UUCP (02/05/90)
->
->
->Does my Xenix '286 ver. 2.1.1 have a "clear screen" funtion that I am
->overlooking? Under MS/DOS the command is "cls", and on SunOS it's "clear".
->
->I have RTFM 'till I'm blue in the face. Any suggestions would be appreciated.
->
try 'tput clear'... wasn't that obvious?...
------------------------------------------------------------------------------
Neal Rhodes MNOP Ltd (404)- 972-5430
President Lilburn (atlanta) GA 30247 Fax: 978-4741
uunet!emory!jdyx!mnopltd!neal Or uunet!gatech!stiatl!mnopltd!neal
------------------------------------------------------------------------------jfrench@photon.tamu.edu (Jeff French) (02/06/90)
In article <153@mnopltd.UUCP> gatech!stiatl!mnopltd!neal writes: > >->Does my Xenix '286 ver. 2.1.1 have a "clear screen" funtion that I am >->overlooking? Under MS/DOS the command is "cls", and on SunOS it's "clear". >-> >->I have RTFM 'till I'm blue in the face. Any suggestions would be appreciated. > >try 'tput clear'... wasn't that obvious?... > As the originator of this thread, I would like to thank all those that responded. Each of the solutions were the same as the one suggested above. The problem is that ver 2.1.1 doesn't support "tput". It is not an option from the command line of any shell I've tried. The closest thing to it is "tputs", which can be used as a termcap entry. It is not available as an external command. Am I missing something here? --------------------------------------------------------------------- jfrench@cssuN.tamu.edu Jeff French "Gig-Em Aggies" ---------------------------------------------------------------------
daveh@marob.masa.com (Dave Hammond) (02/07/90)
In article <4185@helios.TAMU.EDU> jfrench@photon.UUCP (Jeff French) writes: >In article <153@mnopltd.UUCP> gatech!stiatl!mnopltd!neal writes: >>->Does my Xenix '286 ver. 2.1.1 have a "clear screen" funtion that I am >>->overlooking? Under MS/DOS the command is "cls", and on SunOS it's "clear". >>try 'tput clear'... wasn't that obvious?... >The problem is that ver 2.1.1 doesn't support "tput". It is not an option >from the command line of any shell I've tried. On the console screen only, you can echo a Control-L to clear the screen and move the cursor home. Alternatively, on the console and other ANSI terminals (vt100, vt220, ...) you can echo the 6 char sequence ESC [ H ESC [ J to clear the screen and move the cursor home. -- Dave Hammond daveh@marob.masa.com uunet!masa.com!marob!daveh
scott@bbxsda.UUCP (Scott Amspoker) (02/08/90)
In article <25CFA32B.1493@marob.masa.com> daveh@marob.masa.com (Dave Hammond) writes: >In article <4185@helios.TAMU.EDU> jfrench@photon.UUCP (Jeff French) writes: >>In article <153@mnopltd.UUCP> gatech!stiatl!mnopltd!neal writes: >>>->Does my Xenix '286 ver. 2.1.1 have a "clear screen" funtion that I am >>>->overlooking? Under MS/DOS the command is "cls", and on SunOS it's "clear". >>>try 'tput clear'... wasn't that obvious?... >>The problem is that ver 2.1.1 doesn't support "tput". It is not an option >>from the command line of any shell I've tried. > >On the console screen only, you can echo a Control-L to clear the screen >and move the cursor home. Well, I'm sitting here with a Xenix 386 ver 2.3.1 and it has a 'clear' command that works just fine. -- Scott Amspoker Basis International, Albuquerque, NM (505) 345-5232 unmvax.cs.unm.edu!bbx!bbxsda!scott
pf@artcom0.uucp (Peter Funk) (02/08/90)
Im Artikel <4185@helios.TAMU.EDU>, schreibt jfrench@photon.tamu.edu (Jeff French):
] In article <153@mnopltd.UUCP> gatech!stiatl!mnopltd!neal writes:
] >
] >->Does my Xenix '286 ver. 2.1.1 have a "clear screen" funtion that I am
] >->overlooking? Under MS/DOS the command is "cls", and on SunOS it's "clear".
Please try :
/bin/echo '\014\c'
This should work almost everywhere. (May be even in the USSR ;-))
-->
Peter Funk / ArtCom GmbH, Schwachhauser Heerstr. 78, D-2800 Bremen 1
Work at home/ Oldenburger Str.86, D-2875 Ganderkesee 1 /+49 4222 6018 (8am-6pm)daveh@marob.masa.com (Dave Hammond) (02/08/90)
In article <601@bbxsda.UUCP> scott@bbxsda.UUCP (Scott Amspoker) writes: >In article <25CFA32B.1493@marob.masa.com> daveh@marob.masa.com writes: >>In article <4185@helios.TAMU.EDU> jfrench@photon.UUCP (Jeff French) writes: >>>Does my Xenix '286 ver. 2.1.1 have a "clear screen" funtion that I am ^^^^^^^^^^^^^^^^^^^^^ >>>overlooking? Under MS/DOS the command is "cls", and on SunOS it's "clear". >>On the console screen only, you can echo a Control-L to clear the screen >>and move the cursor home. >Well, I'm sitting here with a Xenix 386 ver 2.3.1 and it has a 'clear' >command that works just fine. As does mine. Unfortunately, the original poster has Xenix 286 version 2.1.1 which does not have a 'clear' command (as he stated above).
barton@holston.UUCP (Barton A. Fisk) (02/09/90)
In article <25CFA32B.1493@marob.masa.com>, daveh@marob.masa.com (Dave Hammond) writes: > In article <4185@helios.TAMU.EDU> jfrench@photon.UUCP (Jeff French) writes: > >In article <153@mnopltd.UUCP> gatech!stiatl!mnopltd!neal writes: > Alternatively, on the console and other ANSI terminals (vt100, vt220, ...) > you can echo the 6 char sequence ESC [ H ESC [ J to clear the screen > and move the cursor home. > On the ansi console it's easier to just enter echo "\f\c". This can be put into a script called clear in /usr/bin and should clear the screen and move the cursor home. I used this on my old version of xenix 2.1. -- Barton A. Fisk | UUCP: {attctc,texbell}vector!holston!barton PO Box 1781 | (PSEUDO) DOMAIN: barton@holston.UUCP Lake Charles, La. 70602 | ---------------------------------------- 318-439-5984 | "Let him who is without sin cast the first stone"-JC
brothers@jetsun.WEITEK.COM (bill brothers) (02/09/90)
In article <4174@helios.TAMU.EDU> jfrench@cssuN.tamu.edu (Jeff French) writes: > >Does my Xenix '286 ver. 2.1.1 have a "clear screen" funtion that I am >overlooking? Under MS/DOS the command is "cls", and on SunOS it's "clear". > >Currently I have a script that cats an empty file to the screen. This works >but leaves the cursor in the lower left hand corner of the screen. > >I have RTFM 'till I'm blue in the face. Any suggestions would be appreciated. > >Please excuse my ignorance if their is a blatently simple solution. Thanks! >--------------------------------------------------------------------- > jfrench@cssuN.tamu.edu Jeff French "Gig-Em Aggies" >--------------------------------------------------------------------- Jeff, couldn't make my mailer talk to you... Here is a quick pgm to fix your problem. clear wasn't shipped on XENIX until 2.2... extern char *getenv(); extern char *tgetstr(); main() { char buf[1024], a[1024], *area; area = a; tgetent( buf, getenv("TERM") ); printf("%s", tgetstr("cl", &area) ); } Bill brothers@weitek.COM
brad@microm.UUCP (Bradley W. Fisher) (02/10/90)
In article <25CFA32B.1493@marob.masa.com>, daveh@marob.masa.com (Dave Hammond) writes: > > On the console screen only, you can echo a Control-L to clear the screen > and move the cursor home. > > Alternatively, on the console and other ANSI terminals (vt100, vt220, ...) > you can echo the 6 char sequence ESC [ H ESC [ J to clear the screen > and move the cursor home. echo "\f" works too if your TERM variable is set right. ------------------------------------------------------------------------------ I'm just a wanna be UNIX guru (IJWBUG) | Micro Maintenance, Inc. | 2465 W. 12th St. #6 -== Brad Fisher ==- | Tempe, Arizona 85281 ...!asuvax!mcdphx!hrc!microm | 602/894-5526 ------------------------------------------------------------------------------
staceyc@sco.COM (Stacey Campbell) (02/13/90)
In article <5677@holston.UUCP> barton@holston.UUCP (Barton A. Fisk) writes: >On the ansi console it's easier to just enter echo "\f\c". This >can be put into a script called clear in /usr/bin and >should clear the screen and move the cursor home. A more portable version of clear can be implemented with the following very short C program. #include <curses.h> main() { initscr(); wclear(stdscr); wrefresh(stdscr); endwin(); } Compile under Xenix with; cc clear.c -o clear -lcurses -ltermlib Many curses implementations will find a way to clear the screen even if that particular capability is not directly supported by the terminal. -- Stacey Campbell _--_|\ {uunet,ucscc,decwrl,att,microsoft,wyse}!sco!staceyc / \ staceyc@sco.com \_.--._/ v
brothers@jetsun.WEITEK.COM (bill brothers) (02/14/90)
In article <251@microm.UUCP> brad@microm.UUCP (Bradley W. Fisher) writes: >In article <25CFA32B.1493@marob.masa.com>, daveh@marob.masa.com (Dave Hammond) writes: >> >> On the console screen only, you can echo a Control-L to clear the screen >> and move the cursor home. >> >> Alternatively, on the console and other ANSI terminals (vt100, vt220, ...) >> you can echo the 6 char sequence ESC [ H ESC [ J to clear the screen >> and move the cursor home. The "right :*) way is using termcap/info"... Here is a bitty pgm for that... extern char *getenv(); extern char *tgetstr(); main() { char buf[1024], a[1024], *area; area = a; tgetent( buf, getenv("TERM") ); printf("%s", tgetstr("cl", &area) ); } There but the grace of god go i... Bill brothers@weitek.com
paul@devon.lns.pa.us (Paul Sutcliffe Jr.) (02/16/90)
In article <873@jetsun.WEITEK.COM> brothers@jetsun.WEITEK.COM (bill brothers) writes: +--------- | >> On the console screen only, you can echo a Control-L to clear the screen | >> and move the cursor home. | >> | >> Alternatively, on the console and other ANSI terminals (vt100, vt220, ...) | >> you can echo the 6 char sequence ESC [ H ESC [ J to clear the screen | >> and move the cursor home. | | The "right :*) way is using termcap/info"... Here is a bitty pgm for | that... +--------- You're correct, the "right" way is termcap/terminfo. However, you've implemented it the *WRONG* *WAY* in your example: +--------- | extern char *getenv(); | extern char *tgetstr(); | | main() | { | char buf[1024], a[1024], *area; | area = a; | | tgetent( buf, getenv("TERM") ); | printf("%s", tgetstr("cl", &area) ); | } +--------- First, tgetstr doesn't decode any cursor addressing and/or padding information defined in the termcap entry -- read the manual page! Second, you've used printf, which calls the whole stdio library into your object, and which won't properly handle the padding returned by tgetstr. The string returned from tgetstr should be handed to tputs() -- again, read the manual page! Here's a *much better* solution; it doesn't use stdio, uses tgetstr correctly, and even does proper error checking: ----- 8< ---------- 8< ---------- 8< ---------- 8< ---------- 8< ----- /* * clear.c - clear crt screen * * compile me by saying: cc -O -s -o o clear clear.c -ltermlib */ #define BUFSIZE 1024 #define NULL 0 char termcap[BUFSIZE], buffer[BUFSIZE]; int outc(); main() { char *getenv(), *tgetstr(); char *term, *bptr; bptr = buffer; if ((term = getenv("TERM")) != (char *) NULL) if (tgetent(termcap, term) > 0) if (tgetstr("cl", &bptr) != (char *) NULL) tputs(buffer, 1, outc); } outc(ch) char ch; { write(1, &ch, 1); /* write ch on stdout */ } ----- 8< ---------- 8< ---------- 8< ---------- 8< ---------- 8< ----- Ghod, I even saw someone post a solution that used *curses*! How big was that binary anyway? - paul INTERNET: paul@devon.lns.pa.us | If life's a bitch, then UUCP: ...!rutgers!devon!paul | we must be her puppies.
staceyc@sco.COM (Stacey Campbell) (02/17/90)
In article <1990Feb15.234804.26734@devon.lns.pa.us> paul@devon.LNS.PA.US (Paul Sutcliffe Jr.) writes: >Ghod, I even saw someone post a solution that used *curses*! How big >was that binary anyway? The stripped binary of that program is 31000 bytes, the stripped binary of the program you have suggested is 14700 bytes. The extra 16K bytes does provide extra functionality. The curses version will make an effort to clear the screen even if the terminal does not support this in the hardware. If you don't need this functionality and you very much need the extra 16K then the choice is clear. -- Stacey Campbell _--_|\ {uunet,ucscc,decwrl,att,microsoft,wyse}!sco!staceyc / \ staceyc@sco.com \_.--._/ v