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Full Discussion: Control cursor position also at bottom of window
Top Forums Shell Programming and Scripting Control cursor position also at bottom of window Post 303043702 by wisecracker on Tuesday 4th of February 2020 11:32:04 AM
Old 02-04-2020
I did quote early on in this thread that some terminals do not respond correctly to some terminal escape codes. Some of those escape codes will not work at all.

So in the first part the outside parentheses create an array in advanced shells like bash so therefore longhand:
Code:
Last login: Tue Feb  4 16:17:10 on ttys000
AMIGA:amiga~> term_size=($( stty size ))
AMIGA:amiga~> 
AMIGA:amiga~> printf "%b\n" "${term_size[0]}"
24
AMIGA:amiga~> 
AMIGA:amiga~> printf "%b\n" "${term_size[1]}"
80
AMIGA:amiga~> _

As for the second 'printf' line, changing the values 24 and 80 to say 30 and 120 will expand the terminal size on certain terminals, (xterm as an exmaple), to that size for the duration of that terminal session. Of course calling it again with 24 and 80 restores it back to the original.
IF and a big if, it doesn't work then many of those terminal commands in the URLs won't work either.
 

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LEARN ABOUT OSF1

getty

getty(8)						      System Manager's Manual							  getty(8)

NAME

       getty - Sets the terminal type, modes, speed, and line discipline

SYNOPSIS

       getty [-h] [-t time] line speed_label terminal line_discipline

       getty -c file

FLAGS

       Hold  the  carrier  during the initialization phase;do not hang up.  Set the time period to the specified number of seconds.  Drop the line
       after that amount of time if nothing is typed.  Check the specified gettydefs file.

DESCRIPTION

       The getty command sets and manages terminals by setting up speed, terminal flags, and the line discipline.  If command flags are  provided,
       getty  adapts  the  system to those specifications.  getty prints the login prompt, waits for the user to enter a username, and invokes the
       login command.

       getty uses the /etc/gettydefs file for terminal information.  The line argument refers to the device name in /dev.  The	speed_label  argu-
       ment  is a pointer into the /etc/gettydefs file where the definitions for speed and other associated flags are located.	The terminal argu-
       ment specifies the name of the terminal type.  The line_discipline argument specifies the name of the line discipline.

       The second syntax for the getty command provides a check option.  When getty is invoked with the -c option and filename argument, it checks
       the specified file in the same way it scans gettydefs for terminal information, then prints the results to standard output.

       By  default,  the getty daemon writes the login string specified in the message field of the /etc/gettydefs file to any terminal spawned or
       respawned from the /etc/inittab file.  If an /etc/issue file present, getty reads the file and writes its contents to the terminal prior to
       writing the login string specified in the /etc/gettydefs file.

FILES

       Specifies the command path.  Specifies the terminal line database file.	Specifies the path name for the issue identification file

RELATED INFORMATION

       Commands:  init(8), login(1), stty(1)

       Files: issue(4).  delim off

																	  getty(8)
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