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Top Forums UNIX for Dummies Questions & Answers Bash Script to check Remote Host Connection Post 302185926 by era on Wednesday 16th of April 2008 05:54:39 AM
Old 04-16-2008
Define "up and running".

Code:
ping -c 1 remotehost || { echo "does not respond to ping" >&2 ; exit ; }
rup remotehost || { echo "no rup" >&2; exit; }
# if you have netcat, and ssh on port 22 on remotehost
nc -z remotehost 22 || { echo "nobody home on port 22" >&2; exit; }
ssh remotehost true || { echo "does not let me in" >&2; exit; }

If you want to check port 80 instead, try to fetch a web page, etc.

This obviously also depends on firewall blocks and stuff like that.
 

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MTAIL(1)							   User Commands							  MTAIL(1)

NAME
mtail - tail variant designed for web developers monitoring logfiles SYNOPSIS
mtail [options] <file>... DESCRIPTION
MonkeyTail allows a user to tail multiple files on both local and remote hosts and clearly marks inactivity by putting 5 newlines in the output whenever a pause in output over 3 seconds is detected. MonkeyTail is implemented a fairly simple wrapper script around standard tail, ssh, and sudo. OPTIONS
-q Quiet mode --quiet " " -n Output the last N lines of each file before tailing (defaults to 0) <file>... Files to tail. These can specified in the following ways: @<groupname> - expands the group (from .mtailrc) to a list of files to tail <filename> - tails a local file. +<filename> - attempts to sudo and tail a local file (will prompt for pwd if required). <remotehost>:<filename> - attempts to invoke tail via ssh on a remote host. +<remotehost>:<filename> - attempts to invoke sudo tail via ssh on a remote host (will prompt for pwd if required). SEE ALSO
mtailrc(5), tail(1) AUTHOR
Martyn Smith <martyn@dollyfish.net.nz> mtail May 2008 MTAIL(1)
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