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Top Forums Shell Programming and Scripting BASH condition for "File older than 1 hour" Post 302288021 by Squeakygoose on Monday 16th of February 2009 09:06:42 AM
Old 02-16-2009
BASH condition for "File older than 1 hour"

I have a monitor script that executes every 5 minutes. I am adding functionality that will detect if a previous execution is hung. I have managed to do that by using a flag that is created when the monitor starts and is then removed when the monitor finishes. The hang check simply looks to see if the flag exists and if it does, trigger an alert. Problem is, if a monitor hangs, every subsequent execution shoots off an alert every 5 mins (that's 96 alerts in the morning if it hangs just after I go to bed...)

So, what I need is a second test that will check to see if the flag is older than 1 hour. That way I'll get the initial alert and then one every hour after that instead of every 5 mins. I need a simple condition for my script:

Code:
if [ -a monitor_running_flag ]
then
   if [ -a hung_monitor_flag ]
      echo "alert fired already"
   else
      echo "previous execution of monitor might be hung"
      touch hung_monitor_flag
   fi  
fi

if [ monitor_running_flag older than 1 hour ]
then
   echo "monitor still hung, check on it"
fi

I need something for: [ monitor_running_flag older than 1 hour ]

Thanks!
 

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ATF-SH(1)						    BSD General Commands Manual 						 ATF-SH(1)

NAME
atf-sh [-s shell] -- interpreter for shell-based test programs SYNOPSIS
atf-sh script DESCRIPTION
atf-sh is an interpreter that runs the test program given in script after loading the atf-sh(3) library. atf-sh is not a real interpreter though: it is just a wrapper around the system-wide shell defined by ATF_SHELL. atf-sh executes the inter- preter, loads the atf-sh(3) library and then runs the script. You must consider atf-sh to be a POSIX shell by default and thus should not use any non-standard extensions. The following options are available: -s shell Specifies the shell to use instead of the value provided by ATF_SHELL. ENVIRONMENT
ATF_LIBEXECDIR Overrides the builtin directory where atf-sh is located. Should not be overridden other than for testing purposes. ATF_PKGDATADIR Overrides the builtin directory where libatf-sh.subr is located. Should not be overridden other than for testing purposes. ATF_SHELL Path to the system shell to be used in the generated scripts. Scripts must not rely on this variable being set to select a specific interpreter. EXAMPLES
Scripts using atf-sh(3) should start with: #! /usr/bin/env atf-sh Alternatively, if you want to explicitly choose a shell interpreter, you cannot rely on env(1) to find atf-sh. Instead, you have to hardcode the path to atf-sh in the script and then use the -s option afterwards as a single parameter: #! /path/to/bin/atf-sh -s/bin/bash ENVIRONMENT
ATF_SHELL Path to the system shell to be used in the generated scripts. SEE ALSO
atf-sh(3) BSD
September 27, 2014 BSD
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