Adding a List of Times Post: 302981280

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Top Forums Shell Programming and Scripting Adding a List of Times Post 302981280 by drl on Friday 9th of September 2016 08:42:02 AM

09-09-2016

Registered User

Hi.

The dateutils suite contains a code that can add date/time durations: dadd. However, the format of the durations needs to be not in a form like 1:51:59, but rather 1h51m59s. That can be done with a little pipeline, and then presented to dadd, like so:

Code:

#!/usr/bin/env bash

# @(#) s1       Demonstrate addition of a list of times, dateutils.dadd

# Utility functions: print-as-echo, print-line-with-visual-space, debug.
# export PATH="/usr/local/bin:/usr/bin:/bin"
LC_ALL=C ; LANG=C ; export LC_ALL LANG
pe() { for _i;do printf "%s" "$_i";done; printf "\n"; }
pl() { pe;pe "-----" ;pe "$*"; }
em() { pe "$*" >&2 ; }
db() { ( printf " db, ";for _i;do printf "%s" "$_i";done;printf "\n" ) >&2 ; }
db() { : ; }
C=$HOME/bin/context && [ -f $C ] && $C dateutils.dadd

list="1:11:59 0:13:58 2:06:57 1:38:56 1:36:55 0:06:54 0:31:53 0:33:52 0:38:51 0:44:50"

pl " Input data list:"
pe "$list"

pl " Input list modified:"
v1=$( echo "$list" |
tr ' ' '\n' |
sed 's/:/h/;s/:/m/;s/$/s/' |
tr '\n' ' ')
echo "$v1"

pl " Results:"
dateutils.dadd -f "%T" 00:00:00 $v1 

exit 0

producing:

Code:

$ ./s1

Environment: LC_ALL = C, LANG = C
(Versions displayed with local utility "version")
OS, ker|rel, machine: Linux, 3.16.0-4-amd64, x86_64
Distribution        : Debian 8.4 (jessie) 
bash GNU bash 4.3.30
dateutils.dadd dadd 0.3.1

-----
 Input data list:
1:11:59 0:13:58 2:06:57 1:38:56 1:36:55 0:06:54 0:31:53 0:33:52 0:38:51 0:44:50

-----
 Input list modified:
1h11m59s 0h13m58s 2h06m57s 1h38m56s 1h36m55s 0h06m54s 0h31m53s 0h33m52s 0h38m51s 0h44m50s 

-----
 Results:
09:25:05

The dateutils suite can be found at dateutils, and in repositories for ArchLinux, Debian, Fedora, FreeBSD, Gentoo, NetBSD, OpenSuSE, OS, Slackware, Ubuntu

Best wishes ... cheers, drl

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LEARN ABOUT SUNOS

endusershell

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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