Friends,
I did following exercise
$ echo '' > test
$ od -b test
$ echo "">test
$ od -b test
$echo > test
$od -b test
Every time I got the following output
0000000 012
0000001
But 012 is octal value for new line character .
Even though there is no apperent new line character... (6 Replies)
Hello. I'm a complete newbie to C programming. I have a C program that wasn't written by me where I need to write some wrappers around it to automate and make it easier for a client to use. The problem is that the program accepts standard input to control the program... I'm hoping to find a simple... (6 Replies)
Hi Guys,
I've been learning UNIX for the past couple of days and I came across this exercise, I can't get my head around it, so I would be ever so grateful if I could receive some sort of help or direction with this.
Create a file with x amount of lines in it, the content of your choice. ... (3 Replies)
Hi,
Please don't berate me over the simplicity of these questions. I have recently gotten into bash shell scripting and enjoy it quite a bit. One thing I have not found the answer to though is when naming a shell script, what extension is normally used (ie myscript.?)? Also where is the standard... (5 Replies)
I had a script in solaris wich i read data, for example:
Number 1: _
and the cursor use to be in '_' place because in the code of the script i write:
echo "Number 1:\c"
but i copy the script to a linux and the cursor 'jump' to the begining of the next line like:
Number 1:... (2 Replies)
hi everybody;
trying to c unix programming and ive stucked with a problem:
simple program
filedr=open("tempfile",O_RDWR|O_TRUNC,0);
write(filedr,msg1,6);
int i;
i=read(filedr,msg3,4);
it returns 0 bytes read ... why?
well if i try to poll() before read , it doesnt indicate POLLHUP or... (4 Replies)
I am having trouble making this statement work. I am passing in a number value for the number of days to keep archive logs for and wanted to make sure that it is a number. I have a script that will return 1 for is a number and 0 for is not a number. I also want to make sure that the number is not... (2 Replies)
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
LEARN ABOUT DEBIAN
app::clusterssh::host
App::ClusterSSH::Host(3pm) User Contributed Perl Documentation App::ClusterSSH::Host(3pm)NAME
ClusterSSH::Host - Object representing a host.
SYNOPSIS
use ClusterSSH::Host;
my $host = ClusterSSH::Host->new({
hostname => 'hostname',
});
my $host = ClusterSSH::Host->parse_host_string('username@hostname:1234');
DESCRIPTION
Object representing a host. Include details to contact the host such as hostname/ipaddress, username and port.
METHODS
$host=ClusterSSH::Host->new ({ hostname => 'hostname' })
Create a new host object. 'hostname' is a required arg, 'username' and 'port' are optional. Raises exception if an error occurs.
$host->get_hostname
$host->get_username
$host->get_port
$host->get_master
Return specific details about the host
$host->set_username
$host->set_port
$host->set_master
Set specific details about the host after its been created.
get_realname
If the server name provided is not an IP address (either IPv4 or IPv6) attempt to resolve it and retun the discovered names.
get_givenname
Alias to get_hostname, for use when " get_realname " might return something different
parse_host_string
Given a host string, returns a host object. Parses hosts such as
check_ssh_hostname
Check the objects hostname to see whether or not it may be configured within the users $HOME/.ssh/config configuration file
host
192.168.0.1
user@host
user@192.168.0.1
host:port
[1234:1234:1234::4567]:port
1234:1234:1234::4567
and so on. Cope with IPv4 and IPv6 addresses - raises a warning if the IPv6 address is ambiguous (i.e. in the last example, is the
4567 part of the IPv6 address or a port definition?) and assumes it is part of address. Use brackets to avoid seeing warning.
AUTHOR
Duncan Ferguson, "<duncan_j_ferguson at yahoo.co.uk>"
LICENSE AND COPYRIGHT
Copyright 1999-2010 Duncan Ferguson.
This program is free software; you can redistribute it and/or modify it under the terms of either: the GNU General Public License as
published by the Free Software Foundation; or the Artistic License.
See http://dev.perl.org/licenses/ for more information.
perl v5.14.2 2012-06-24 App::ClusterSSH::Host(3pm)