Hello World Linux - Morning Server Tasks with Your First Coffee

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Hello World Linux - Morning Server Tasks with Your First Coffee

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Hello World Linux - Morning Server Tasks with Your First Coffee


Here are the typical Linux commands you would use when you wake up in the morning and are having your first cup of coffee while checking your remote server(s).

Use ssh username@hostname or use ssh username@ipaddress to login to your remote servers when you wake up in the morning.

After logging in it is normally best to cd or “change directory” into your log file directory and check log files.

Now, it is always a good idea to list the files in the directory you are in using the ls command, here we use a long listing ls -l with wildcard match

Using the cat command we can take a look at the contents of text files. In this case, we look at one of the log files.

Seeing nothing of interest or out of the ordinary in our various log file(s), we simply truncate the log files down to 0 bytes like so: truncate -s 0 *log

Let’s quickly use the top command to see if there is anything that looks unusual, inspecting web server and database processes, or whatever is your critial application

To leave the top command, press ^c better known as “control c”. ^c will often get you out of a jam when you are “stuck” and need a way out Smilie

Use the clear command to clear your terminal screen at anytime.

Next we cd ~ where ~ is pronounced “tilda” and change to our home directory. Then we pwd, or “print working directory” confirming filesystem location.

That’s all for this version of “hello world” and our “good morning tasks”. Let’s type exit and logout of here!

Thanks for watching.

Presented by Daemon Media in 1080 HD for UNIX.com
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Net::Server::MultiType(3)				User Contributed Perl Documentation				 Net::Server::MultiType(3)

Net::Server::MultiType - Net::Server personality SYNOPSIS
use base qw(Net::Server::MultiType); sub process_request { #...code... } my @types = qw(PreFork Fork Single); Net::Server::MultiType->run(server_type => @types); DESCRIPTION
Please read the pod on Net::Server first. This module is a personality, or extension, or sub class, of the Net::Server module. This personality is intended to allow for easy use of multiple Net::Server personalities. Given a list of server types, Net::Server::MultiType will require one at a time until it finds one that is installed on the system. It then adds that package to its @ISA, thus inheriting the methods of that personality. ARGUMENTS
In addition to the command line arguments of the Net::Server base class, Net::Server::MultiType contains one other configurable parameter. Key Value Default server_type 'server_type' 'Single' server_type May be called many times to build up an array or possible server_types. At execution, Net::Server::MultiType will find the first available one and then inherit the methods of that personality CONFIGURATION FILE
"Net::Server::MultiType" allows for the use of a configuration file to read in server parameters. The format of this conf file is simple key value pairs. Comments and white space are ignored. #-------------- file test.conf -------------- ### multi type info ### try PreFork first, then go to Single server_type PreFork server_type Single ### server information min_servers 20 max_servers 80 spare_servers 10 max_requests 1000 ### user and group to become user somebody group everybody ### logging ? log_file /var/log/server.log log_level 3 pid_file /tmp/server.pid ### access control allow .+.(net|com) allow domain.com deny a.+ ### background the process? background 1 ### ports to bind host port localhost:20204 port 20205 ### reverse lookups ? # reverse_lookups on #-------------- file test.conf -------------- PROCESS FLOW
See Net::Server HOOKS
There are no additional hooks in Net::Server::MultiType. TO DO
See Net::Server AUTHOR
Paul T. Seamons paul@seamons.com SEE ALSO
Please see also Net::Server::Fork, Net::Server::INET, Net::Server::PreFork, Net::Server::MultiType, Net::Server::Single perl v5.18.2 2012-06-05 Net::Server::MultiType(3)

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