05-28-2003
See the man page
man perlfaq8
and search it for clear.
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
$number_clients++;
print("Creating client $number_clients\r");
I have been using the above to increment on the screen as the script increments throughout a while loop. What I would like to know is what is the trick to keep the last one on the screen without printing it again?
Ie
... (1 Reply)
Discussion started by: Shakey21
1 Replies
2. Shell Programming and Scripting
as the title suggests, i need to print a user message to a log file and the screen using perl.
in unix i set up a function using 'tee' like so
function Display_Message
{
echo "$*" | tee -ai $LOGFILE
}
the following command then obviously displays to the screen and prints to a log... (6 Replies)
Discussion started by: mjays
6 Replies
3. Shell Programming and Scripting
Hello,
I need to print messages both to screen and to file handle in perl , like tee does in unix .
Any suggestions ?
Thanks (2 Replies)
Discussion started by: Alalush
2 Replies
4. Shell Programming and Scripting
Hello All,
I have a perl script , and the STDERR and additional FH is redirected to the STDOUT like below:
open STDOUT ,">>$log" or die "$! :: $log\n";
open STDERR ,">&STDOUT" or die "$! :: Can redirect STDERR to STDOUT\n";
select STDERR; $|=1;
open LOG ,">&STDOUT" or die "$! :: Can... (2 Replies)
Discussion started by: Alalush
2 Replies
5. Programming
Hi guys,
I've got the following code for clearing the screen in my Python shell using curses:
import curses
scrn = curses.initscr()
scrn.clear()
However, upon execution, my shell crashes. Would appreciate a pointer in the right direction. Thanks. :D (4 Replies)
Discussion started by: sadistik_exec
4 Replies
6. UNIX for Advanced & Expert Users
Hi Guy,
In order to monitor the user sessions, I have put the screen tool in the .profile in order to record the whole session.
However, when the user logs in, the screen command is executed and the screen is first cleared, then the command prompt appears. so, I basically want to disable the... (2 Replies)
Discussion started by: saad26
2 Replies
7. Shell Programming and Scripting
Hi there
I have a hash of hashes made up of the following data
bge0|100|half|10.36.100.21
bge1|1000|full|10.36.100.22
bge2|1000|full|10.36.100.23
which when i turn into a hash, would look like this inside the system
bge0 ->
nic_speed -> 100
nic_duplex -> half
... (6 Replies)
Discussion started by: hcclnoodles
6 Replies
8. Red Hat
Hi,
I have a simple question : how to disable screen lock and/or sreen saver with command line with RHEL5.4 ? (1 Reply)
Discussion started by: albator1932
1 Replies
9. Shell Programming and Scripting
Hi,
I am writing a menu driven Korn script where I am getting some input from the users (host details, like Hostname, HBA WWN, Devices etc...). I face a challenge when the number of input lines goes past my window size. For this reason, I am planning to use a part of the screen for user input, say... (3 Replies)
Discussion started by: lasko
3 Replies
10. UNIX for Dummies Questions & Answers
I made a screen within a screen.
Is there a way to move the inner screen up one level so that it is at the same level as the first screen running from the shell? (2 Replies)
Discussion started by: phpchick
2 Replies
clear(1) General Commands Manual clear(1)
NAME
clear - clear the terminal screen
SYNOPSIS
clear [-Ttype] [-V] [-x]
DESCRIPTION
clear clears your screen if this is possible, including its scrollback buffer (if the extended "E3" capability is defined). clear looks in
the environment for the terminal type given by the environment variable TERM, and then in the terminfo database to determine how to clear
the screen.
clear writes to the standard output. You can redirect the standard output to a file (which prevents clear from actually clearing the
screen), and later cat the file to the screen, clearing it at that point.
OPTIONS
-T type
indicates the type of terminal. Normally this option is unnecessary, because the default is taken from the environment variable TERM.
If -T is specified, then the shell variables LINES and COLUMNS will also be ignored.
-V reports the version of ncurses which was used in this program, and exits. The options are as follows:
-x do not attempt to clear the terminal's scrollback buffer using the extended "E3" capability.
HISTORY
A clear command appeared in 2.79BSD dated February 24, 1979. Later that was provided in Unix 8th edition (1985).
AT&T adapted a different BSD program (tset) to make a new command (tput), and used this to replace the clear command with a shell script
which calls tput clear, e.g.,
/usr/bin/tput ${1:+-T$1} clear 2> /dev/null
exit
In 1989, when Keith Bostic revised the BSD tput command to make it similar to the AT&T tput, he added a shell script for the clear command:
exec tput clear
The remainder of the script in each case is a copyright notice.
The ncurses clear command began in 1995 by adapting the original BSD clear command (with terminfo, of course).
The E3 extension came later:
o In June 1999, xterm provided an extension to the standard control sequence for clearing the screen. Rather than clearing just the vis-
ible part of the screen using
printf '