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Full Discussion: How to calculate time difference between start and end time of a process!
Top Forums Shell Programming and Scripting How to calculate time difference between start and end time of a process! Post 302450401 by frans on Thursday 2nd of September 2010 01:05:47 PM
Old 09-02-2010
With GNU date
Code:
#!/bin/bash
StartDate="08/05/10 12:55"
EndDate="08/09/10 06:50"
HRS=$((($(date -d "$EndDate" +%s)-$(date -d "$StartDate" +%s))/3600))
WHRS=$HRS
for (( D=1; D<$((HRS/24+1)); D++ ))
do
   [ $(date -d "$StartDate $D days" +%u) -ge 6 ] && ((WHRS-=24))
done
echo "Working time elapsed='$WHRS'"

As a function
Code:
#!/bin/bash
Elapsed()	{
   HRS=$((($(date -d "$2" +%s)-$(date -d "$1" +%s))/3600))
   WHRS=$HRS
   for (( D=1; D<$((HRS/24+1)); D++ ))
   do
      [ $(date -d "$1 $D days" +%u) -ge 6 ] && ((WHRS-=24))
   done
   echo $WHRS
}
StartDate="08/05/10 12:55"
EndDate="08/09/10 06:50"
echo "Working time elapsed='$(Elapsed "$StartDate" "$EndDate")'"

 

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LEARN ABOUT SUNOS

getusershell

getusershell(3C)					   Standard C Library Functions 					  getusershell(3C)

NAME

       getusershell, setusershell, endusershell - get legal user shells

SYNOPSIS

       #include <unistd.h>

       char *getusershell(void);

       void setusershell(void);

       void endusershell(void);

DESCRIPTION

       The  getusershell()  function  returns  a  pointer  to  a  legal  user  shell  as defined by the system manager in the file /etc/shells. If
       /etc/shells does not exist, the following locations of the standard system shells are used in its place:

       /bin/bash		  /bin/csh
       /bin/jsh 		  /bin/ksh
       /bin/pfcsh		  /bin/pfksh
       /bin/pfsh		  /bin/sh
       /bin/tcsh		  /bin/zsh
       /sbin/jsh		  /sbin/pfsh
       /sbin/sh 		  /usr/bin/bash
       /usr/bin/csh		  /usr/bin/jsh
       /usr/bin/ksh		  /usr/bin/pfcsh
       /usr/bin/pfksh		  /usr/bin/pfsh
       /usr/bin/sh		  /usr/bin/tcsh
       /usr/bin/zsh		  /usr/xpg4/bin/sh

       The getusershell() function opens the file /etc/shells, if it exists, and returns the next entry in the list of shells.

       The setusershell() function rewinds the file or the list.

       The endusershell() function closes the file, frees any memory used by getusershell() and setusershell(), and rewinds the file /etc/shells.

RETURN VALUES

       The getusershell() function returns a null pointer on EOF.

BUGS

       All information is contained in memory that may be freed with a call to endusershell(), so it must be copied if it is to be saved.

SunOS 5.10							    30 Aug 2004 						  getusershell(3C)
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