Top Forums Shell Programming and Scripting How do I calculate total number of active and non active hosts? Post 302761877 by RudiC on Sunday 27th of January 2013 09:42:57 AM
Sorry? If you run your loop over the 10 hosts in your code snippet, for every host responding it will execute the then branch and increment cnt in there, so cnt will hold the No. of active hosts afterwards. Did you give it a shot, after all?
 
Test Your Knowledge in Computers #925
Difficulty: Medium
The earliest versions of Unix time had a 32-bit integer incrementing at a rate of 60 Hz.
True or False?

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RPLAY.HOSTS(5)							File Formats Manual						    RPLAY.HOSTS(5)

NAME
rplay.hosts - rplay host authentication database SYNOPSIS
/usr/local/etc/rplay.hosts DESCRIPTION
The rplay.hosts file contains a list of hosts and access permissions which rplayd uses to validate incoming connections. Each line is of the form: hostname[:permission] where hostname is the name of a remote host or a host's IP address. Wildcards can be used within IP addresses to match multiple hosts. The wildcard character is "*". permission is an optional field containing any combination of the following characters: r the host can read sounds. w the host can write sounds. x the host can play, stop, pause, and continue sounds. This is normally called execute permission. m the host can monitor the audio stream written by rplayd to the audio device. "rx" permissions are used when no permissions are specified. EXAMPLE
# # All hosts have read access: # *:r # # Trusted hosts: # nice-guy.sdsu.edu:rwx friend.sdsu.edu:rwx amigo.sdsu.edu:rwx 130.191.224.224:rwx # # Hosts which can read and execute: # foo.bar.com:rx 130.190.*:rx 146.244.234.*:rx using.default.perms.edu # # Hosts which can monitor the audio stream # nsa.sdsu.edu:m FILES
/usr/local/etc/rplay.hosts SEE ALSO
rplayd(1) BUGS
The permissions for an "*" entry apply to all matching hosts. The order of this file does not matter. Specific hosts can have access dis- abled with entries like: bad.guy.edu: however, any matching "*" entries will still apply. 12/21/97 RPLAY.HOSTS(5)

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