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Full Discussion: linux service script for storing uptime
Homework and Emergencies Homework & Coursework Questions linux service script for storing uptime Post 302480314 by fed.linuxgossip on Tuesday 14th of December 2010 02:04:33 PM
Old 12-14-2010
linux service script for storing uptime
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1. The problem statement, all variables and given/known data:

Can you please advise a script for the following:

write linux service named system_up_duration .This service will create one file named uptime in directory ‘/temp/’. In this file the service will store the total time for which the system is up and running .The file will be updated after every one minute. If system is rebooted the time inside the file uptime should be reset to 0




2. Relevant commands, code, scripts, algorithms:



3. The attempts at a solution (include all code and scripts):


With my limited knowledge, I feel the script ( say xyz.some_ext) should be like this:


#!/bin/bash
DIR=/temp

if [ ! -d "$DIR" ]
then

mkdir /temp/
uptime | awk {'print $3,$4}' | cut -d, -f1 > /temp/uptime

else

echo > /temp/uptime
uptime | awk {'print $3,$4}' | cut -d, -f1 > /temp/uptime





Then we can set this script to run once from rc.local during startup. However I do not know how to run this as service ( else we will have to run a cron to update time every min).

Please advise.


Thank you





4. Complete Name of School (University), City (State), Country, Name of Professor, and Course Number (Link to Course):

For a friend
Ashok Deshmukh
nowrosjee wadia college
Pune, India
Last edited by fed.linuxgossip; 12-14-2010 at 03:21 PM..
 

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LEARN ABOUT DEBIAN

std::hash

std::hash< _Tp >(3cxx)													    std::hash< _Tp >(3cxx)

NAME

       std::hash< _Tp > -

SYNOPSIS

       Inherits std::__hash_base< _Result, _Arg >.

   Public Types
       typedef _Arg argument_type
       typedef _Result result_type

   Public Member Functions
       size_t operator() (_Tp __val) const
       template<> size_t operator() (bool __val) const
       template<> size_t operator() (char __val) const
       template<> size_t operator() (signed char __val) const
       template<> size_t operator() (unsigned char __val) const
       template<> size_t operator() (wchar_t __val) const
       template<> size_t operator() (char16_t __val) const
       template<> size_t operator() (char32_t __val) const
       template<> size_t operator() (short __val) const
       template<> size_t operator() (int __val) const
       template<> size_t operator() (long __val) const
       template<> size_t operator() (long long __val) const
       template<> size_t operator() (unsigned short __val) const
       template<> size_t operator() (unsigned int __val) const
       template<> size_t operator() (unsigned long __val) const
       template<> size_t operator() (unsigned long long __val) const
       template<> size_t operator() (float __val) const
       template<> size_t operator() (double __val) const
       template<> size_t operator() (long double __val) const

Detailed Description
   template<typename _Tp>struct std::hash< _Tp >
       Primary class template hash.

       Definition at line 58 of file functional_hash.h.

Author
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libstdc++							  Tue Nov 27 2012					    std::hash< _Tp >(3cxx)
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