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Full Discussion: Extract lines if string found from last 30 min only
Top Forums UNIX for Beginners Questions & Answers Extract lines if string found from last 30 min only Post 303030806 by Don Cragun on Saturday 16th of February 2019 06:18:35 AM
Old 02-16-2019
Quote:
Originally Posted by nezabudka
Thank you very much for the comments. All the above I be taken into account for the future.
And in the last remark. This is my carelessness and bug. The order of the expressions was violated.
Apparently I wanted to make something like that.
Code:
        if ($7 == "PM") a[1]+=12
        if (a[1] == 24) a[1] = "00"
        $5 = a[1] ":" a[2] ":" a[3]

... ... ...
Thank you for teaching, it was very informative.
Hi nezabudka,
I'm afraid the above code still doesn't work for anything that started with a[1]==12. If you start with 12 AM on a 12 hour clock you should end up with hour 00 on a 24 hour clock (the above code ends up with hour 12) and if you start with 12 PM on a 12 hour clock you should end up with hour 12 on a 24 hour clock (the above code ends up with hour 00).

If you don't like the code I suggested in post #9 or either of the suggestions I made in post #12 you could also try:
Code:
        $5 = (($7 == "PM") ? a[1] + 12 * (a[1] != 12) : (a[1] == 12) ? "00" : a[1]) ":" a[2] ":" a[3]

This User Gave Thanks to Don Cragun For This Post:
nezabudka
 

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LEARN ABOUT DEBIAN

saytime

SAYTIME(1)						      General Commands Manual							SAYTIME(1)

NAME

       saytime - audio time check

SYNOPSIS

       saytime [ -ch ] [ -d dir ] [ -f fmt ] [ -o dev ] [ -t output-type ]

DESCRIPTION

       saytime speaks the current time through the computer's sound device.

OPTIONS

       -v factor
	      Increase volume level by factor. Directly passed on to sox.

       -r sec Repeat at the specified interval in background mode.

       -c     Output to stdout.

       -d dir Use sounds from alternate directory (default /usr/share/saytime).

       -f fmt Specify format of time message. (see FORMAT STRING below).

       -h     Display simple help.

       -o dev Output to alternate file.  If -t is not specified with -o, -t defaults to ossdsp.

       -t output-type
	      Specify  the  output type (oss, alsa, etc.); this is passed directly to sox.  If neither -t nor -o is specified, saytime will pick a
	      default destination via sox -d.

FORMAT STRING

       A format string can be specified to control the time message.  Valid format characters are:

       %k     hour, 24-hour clock (00..23)

       %l     hour, 12-hour clock (01..12)

       %M     minutes

       %P     Introductory phrase ('The time is')

       %S     seconds

       The default format string is %P%l%M%S.

BUGS

       Likely a few. It doesn't handle errors gracefully.

CONTRIBUTORS

       Jef Poskanzer (original author),

       Patrick J. Edwards <pje120@mail.usask.ca>

       Charles Briscoe-Smith <cpbs@debian.org>

       David C Dawson <beagle7@pacificcoast.net> (the -v and -r options)

								    14 Sep 2004 							SAYTIME(1)
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