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1. UNIX for Advanced & Expert Users

how to get number of seconds

How do I get the number of seconds since 1970, within a script, for the previous day at 23:59? I need this value to pass into a sql statement to cleanup records older than the previous day at midnight. It will be automated via cron so no hard coding allowed. Thanks!

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seconds to hh:mm:ss

Any sleek way to convert seconds to hh:mm:ss format . I know it can be done by mod and divide . Looking for a one liner if possible . Example 3600 seconds = 01:00:00 3601 seconds = 01:00:01

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Convert Seconds to hh:mm:ss

Hi All I need to convert a number of fields in a record from seconds to hh:mm:ss ( or possibly hhh:mm:ss ). I'm guessing awk is the way to go . File has multiple records and each record contains 101 fields - can awk handle that ? The seconds values will be in fields 3 - 101 and could be 0. ...

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Hi, In my shell script, (as per the requirement), I am creating few files, and the processes are launched parallelly . (by using "&" at the end of the command line). As per the logic, I need to remove these files as well, after creating. But, the problem is, due to parallel processing,...

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Hi, I'm trying to find processing time of my script. Please can someone give me the commands to get the start/end time in "dd-mm-yyyy hh:mm:ss" and the differnce in seconds. Thanks!

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Sorting and wc -l w.r.t seconds

I have file with below data 00:00:00 00:00:00 00:00:00 00:00:01 00:00:01 00:00:01 00:00:01 00:00:01 00:02:01 00:02:01 00:02:01 so on till 23:59:59 I want count of seconds for each hour and minutes say for 00:00:00 its 3 and 00:00:01 its 5 and 00:02:01 its 3 and so on...

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sleep

SLEEP(1)							   User Commands							  SLEEP(1)

NAME

       sleep - delay for a specified amount of time

SYNOPSIS

       sleep NUMBER[SUFFIX]...
       sleep OPTION

DESCRIPTION

       Pause for NUMBER seconds.  SUFFIX may be `s' for seconds (the default), `m' for minutes, `h' for hours or `d' for days.	Unlike most imple-
       mentations that require NUMBER be an integer, here NUMBER may be an arbitrary floating point number.  Given two or  more  arguments,  pause
       for the amount of time specified by the sum of their values.

       --help display this help and exit

       --version
	      output version information and exit

AUTHOR

       Written by Jim Meyering and Paul Eggert.

REPORTING BUGS

       Report sleep bugs to bug-coreutils@gnu.org
       GNU coreutils home page: <http://www.gnu.org/software/coreutils/>
       General help using GNU software: <http://www.gnu.org/gethelp/>
       Report sleep translation bugs to <http://translationproject.org/team/>

COPYRIGHT

       Copyright (C) 2011 Free Software Foundation, Inc.  License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
       This is free software: you are free to change and redistribute it.  There is NO WARRANTY, to the extent permitted by law.

SEE ALSO

       sleep(3)

       The  full  documentation  for sleep is maintained as a Texinfo manual.  If the info and sleep programs are properly installed at your site,
       the command

	      info coreutils 'sleep invocation'

       should give you access to the complete manual.

GNU coreutils 8.12.197-032bb					  September 2011							  SLEEP(1)