05-26-2011
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hi All,
Currently iam going to migrate some of the ksh scripts from HPUX to LINUX.
Will there be any major change in scripts which I have to take care for migration?
Appreciate some help on this.
Thanks
Om (1 Reply)
Discussion started by: Omkumar
1 Replies
2. Shell Programming and Scripting
Hi,
I need to cut filename in Linux ksh.
for example file name is c_xxxx_cp_200908175035.zip. I need to get variable with only c_xxxx_cp value. (10 Replies)
Discussion started by: juliyp
10 Replies
3. Shell Programming and Scripting
Hello,
I'm trying to create a muliti value shell variable with newlines inside it, So that I can read the values of that variable individually line by line, but KSH seems to be stripping my variable of newlines in LINUX, but UNIX its working fine.
Here's Example :
String =... (3 Replies)
Discussion started by: Sanju1236
3 Replies
4. UNIX for Dummies Questions & Answers
Hello All, Good Morning.
I am trying to erase history list in my linux box, but my below command is failing. What is the actual way to clear it?
> history clear
-bash: history: clear: numeric argument required
Also when I run my commands in my command prompt, my team lead can see my... (7 Replies)
Discussion started by: NARESH1302
7 Replies
5. Shell Programming and Scripting
I want to clear the history so that no one should be able to see what commands I gave in the AIX OS level. I tried using history -c , ~/.sh_history, but they aren't working :wall:
Please tell me the command in ksh which can clear all the previous history? (4 Replies)
Discussion started by: lg123
4 Replies
6. Shell Programming and Scripting
Overview:
I have an AWK program that parses thru a database backup
server log file and outputs ths following parameters
SRNO DATE : TIME SIZE IN(KB) DATABASE NAME DUMP TYPE
1 May 16 2012: 13:30:00 6874 TestDB database
2 May 16 2012: 13:30:44 11462 master database
Problem:
This program has... (5 Replies)
Discussion started by: JolietJake
5 Replies
7. Shell Programming and Scripting
Hi
Am using ksh shell
I need to remove history of commands used..
I tried
# rm .vi_history
# touch .vi_history
# chmod 600 .vi_history
This didnt work.. I tried also
# rm .sh_history
# touch .sh_history
# chmod 600 .sh_history (5 Replies)
Discussion started by: Priya Amaresh
5 Replies
8. Shell Programming and Scripting
We are migrating some scripts (ksh) from Solaris 10 to Linux 2.6.32.
Can someone share list of changes i need to take care for this ?
Have found few of them but i am looking for a exhaustive list.
Thanks. (6 Replies)
Discussion started by: Shivdatta
6 Replies
9. UNIX for Dummies Questions & Answers
Hello,
Would the same version of Korn Shell (let's say ksh93) would use the same syntax on UNIX and LINUX and work exactly the same? Thanks (3 Replies)
Discussion started by: rdogadin
3 Replies
10. Programming
Hello friends! i am writing a code in which i take inputs (numbers) from user and count the total number of positive, negative and zeros entered. I need to clear my standard input buffer before scanf() command. My compiler is completely ignoring the fflush(stdin) command. its not even showing any... (1 Reply)
Discussion started by: Abhishek_kumar
1 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 '