02-07-2002
10 More Discussions You Might Find Interesting
1. Programming
I'm trying to write 2 programs, client & server, that communicate with integers, however, all resources I have found on the net assume that you want to send and recieve information as a character array. I don't want to send my integers as characters, I want to send them as ints (casting them to... (2 Replies)
Discussion started by: Mistwolf
2 Replies
2. UNIX for Dummies Questions & Answers
Ok what is BSD exactly? I know its a type of open source but what is it exactly? (1 Reply)
Discussion started by: Corrail
1 Replies
3. Programming
any suggestions on how i could create a simple chat program between two terminals using pipes? thanks (1 Reply)
Discussion started by: kelogs1347
1 Replies
4. Programming
I don't know if it is right to ask you this. Can someone help me write a simple Xlib program,with button on it,and all that button do is switch 2 messages.
I have tried and tried,but never get past Hello World. Can someone help me please?
---------- Post updated at 10:17 PM ---------- Previous... (2 Replies)
Discussion started by: megane16v
2 Replies
5. UNIX for Dummies Questions & Answers
I start wetting my toes in Linux programming.
I tried the first program myls.c in Advanced Programming in the Unix Environment.
#include <sys/types.h>
#include <dirent.h>
#include "apue.h"
int main(int argc, char *argv)
{
DIR *dp;
struct... (1 Reply)
Discussion started by: cqlouis
1 Replies
6. Shell Programming and Scripting
The circumfrence of a circle is
#!/usr/bin/perl
print 2 * 3.141592654 * 12.50 \n"; # pi= 3.141592654
# r= 12.50
I need a simple program showing me all the steps..to modify the above to prompt for and accept a radius from the person running the... (3 Replies)
Discussion started by: Q2wert
3 Replies
7. Shell Programming and Scripting
Hey all,
Writing a program that searches for a username and if they are online creates a 'beep' and sends the username and date to a log file.
the error i am getting is:
paul.obrien16@aisling:~/os$ bash checklogin
: command not found
Enter username
paul.obrien16
': not a valid... (2 Replies)
Discussion started by: sexyladywall
2 Replies
8. UNIX for Dummies Questions & Answers
i am new to shell scripting!! i am making this program in bourne shell, that asks the user to input "Hello (their name)" or "question (their name)", any other input, "ERROR" will be outputted.
if they input "Hello (name)", i want to out saying Hello (name) but if they input "question (name)", i... (4 Replies)
Discussion started by: bshell_1214
4 Replies
9. Programming
Given the following code inside the function ext3_write_super():
(It's there in Linux kernel 2.6.27.59)
static void ext3_write_super (struct super_block * sb)
{
if (mutex_trylock(&sb->s_lock) != 0)
BUG();
sb->s_dirt = 0;
}
The conditional test at if... (2 Replies)
Discussion started by: Praveen_218
2 Replies
10. Red Hat
Cheers!
In /etc/syslog.conf, if an error type is not specified, is it logged anywhere (most preferable is it logged to /var/log/messages) or not?
To be more precise I am interested in error and critical level messages. At default these errors are not specified in syslog.conf, and I need to... (6 Replies)
Discussion started by: dr1zzt3r
6 Replies
WALL(1) User Commands WALL(1)
NAME
wall -- write a message to users
SYNOPSIS
wall [-n] [-t TIMEOUT] [file]
DESCRIPTION
Wall displays the contents of file or, by default, its standard input, on the terminals of all currently logged in users. The command will
cut over 79 character long lines to new lines. Short lines are white space padded to have 79 characters. The command will always put carriage
return and new line at the end of each line.
Only the super-user can write on the terminals of users who have chosen to deny messages or are using a program which automatically denies
messages.
Reading from a file is refused when the invoker is not superuser and the program is suid or sgid.
OPTIONS
-n, --nobanner
Supress banner
-t, --timeout TIMEOUT
Write timeout to terminals in seconds. Argument must be positive integer. Default value is 300 seconds, which is a legacy from
time when people ran terminals over modem lines.
-V, --version
Output version and exit.
-h, --help Output help and exit.
SEE ALSO
mesg(1), talk(1), write(1), shutdown(8)
HISTORY
A wall command appeared in Version 7 AT&T UNIX.
AVAILABILITY
The wall command is part of the util-linux package and is available from ftp://ftp.kernel.org/pub/linux/utils/util-linux/.
util-linux April 2011 util-linux