For some reason LINES is not set in a non-interactive shell - even if checkwinsize is on. (I'm using Bash 5.0 but noticed that back in Bash 4.4, Kali Linux (which is Debian 9) and Raspian, too:
Hence I use LINES=$(tput lines) in my script.
I want to get the screen width and cursor positions.
When I used curses, all the screen content was cleared.
So Can I use curses to get the screen size without clearing anything in the window?
Or is there any other alternative???
I can use only C or C++. (0 Replies)
Hi,
Pleae help me on this. Normally, when we say read username, the cursor will come in the first position of next line, but I want the output of the below
Normal usage
-------------
please enter username:
_
I want like the below
----------------------
please enter username:
... (2 Replies)
Hi to all!
I'm a teacher of maths and physics in an italian high school in Milan, Italy.
I need a simple program that read the position of mouse cursor in function of time and write the coordinates in a text file. The time resolution have to be something like 1/10 sec or better (I have to know... (2 Replies)
hi all,
am trying to modify a ksh script to group server names together depending on the cluster they sit in. currently the script does a
find . -name '*.pid'
to find all running servers and prints out their pids and names.
current output looks something like this :
serverA ... (1 Reply)
I need to get the cursor position, and put it inside a variable. Problem is, i don't have the tput command, or ncurses.
Apparently I was supposed to try the following:
echo -e '\E
But I don't get a value or anything. Please help. (3 Replies)
Hi there.
It's easier to explain this with a pseudo code, I hope this makes sense:
var1=hello
echo $var1
some kind of loop
echo loop counter
done
How do I hold the cursor position immediately behind the last output so I'd get something like:
hello123456789
DOS used to use ","... (5 Replies)
Discussion started by: MuntyScrunt
5 Replies
LEARN ABOUT FREEBSD
curs_variables
curs_variables(3X)curs_variables(3X)NAME
COLORS, COLOR_PAIRS, COLS, ESCDELAY, LINES, TABSIZE, curscr, newscr, stdscr - curses global variables
SYNOPSIS
#include <curses.h>
int COLOR_PAIRS;
int COLORS;
int COLS;
int ESCDELAY;
int LINES;
int TABSIZE;
WINDOW * curscr;
WINDOW * newscr;
WINDOW * stdscr;
DESCRIPTION
This page summarizes variables provided by the curses library. A more complete description is given in the curses(3X) manual page.
Depending on the configuration, these may be actual variables, or macros (see curs_threads(3X) and curs_opaque(3X)) which provide read-only
access to curses's state. In either case, applications should treat them as read-only to avoid confusing the library.
COLOR_PAIRS
After initializing curses, this variable contains the number of color pairs which the terminal can support. Usually the number of color
pairs will be the product COLORS*COLORS, however this is not always true:
o a few terminals use HLS colors, which do not follow this rule
o terminals supporting a large number of colors are limited by the number of color pairs that can be represented in a signed short value.
COLORS
After initializing curses, this variable contains the number of colors which the terminal can support.
COLS
After initializing curses, this variable contains the width of the screen, i.e., the number of columns.
ESCDELAY
This variable holds the number of milliseconds to wait after reading an escape character, to distinguish between an individual escape char-
acter entered on the keyboard from escape sequences sent by cursor- and function-keys (see curses(3X).
LINES
After initializing curses, this variable contains the height of the screen, i.e., the number of lines.
TABSIZE
This variable holds the number of columns used by the curses library when converting a tab character to spaces as it adds the tab to a win-
dow (see curs_addch(3X).
The Current Screen
This implementation of curses uses a special window curscr to record its updates to the terminal screen.
The New Screen
This implementation of curses uses a special window newscr to hold updates to the terminal screen before applying them to curscr.
The Standard Screen
Upon initializing curses, a default window called stdscr, which is the size of the terminal screen, is created. Many curses functions use
this window.
NOTES
The curses library is initialized using either initscr(3X), or newterm(3X).
If curses is configured to use separate curses/terminfo libraries, most of these variables reside in the curses library.
PORTABILITY
ESCDELAY and TABSIZE are extensions, not provided in most other implementations of curses.
SEE ALSO curses(3X), curs_opaque(3X), curs_terminfo(3X), curs_threads(3X), term_variables(3X), terminfo(5).
curs_variables(3X)