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Top Forums Shell Programming and Scripting Date format to be changed from DDMMYYYY to YYYYMMDD Post 302779053 by RudiC on Tuesday 12th of March 2013 04:48:34 AM
Old 03-12-2013
You have to prepend whatever input you produce to the second one, of course, like the ls | used above. I added it to the code.

The first code breaks the input line at _ and . as told by the field separator, set with -F. $NF is the last field ("txt"), $(NF-1) the before last field containing the date string. The use of the substr function is self explanatory, I think.
The second works similarly, but leaves the .txt extension intact.

Last edited by RudiC; 03-12-2013 at 05:50 AM.. Reason: typo corrected
 

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PMDATE(1)						      General Commands Manual							 PMDATE(1)

NAME
pmdate - display an offset date SYNOPSIS
pmdate [ offset ... ] format DESCRIPTION
pmdate displays the current date and/or time, with an optional offset. An offset is specified with a leading sign (``+'' or ``-''), followed by an integer value, followed by one of the following ``scale'' spec- ifiers; S seconds M minutes H hours d days m months y years The output format follows the same rules as for date(1) and strftime(3). For example, the following will display the date a week ago as DDMMYYYY; pmdate -7d %d%m%Y PCP ENVIRONMENT
Environment variables with the prefix PCP_ are used to parameterize the file and directory names used by PCP. On each installation, the file /etc/pcp.conf contains the local values for these variables. The $PCP_CONF variable may be used to specify an alternative configura- tion file, as described in pcp.conf(5). SEE ALSO
date(1), strftime(3), pcp.conf(5) and pcp.env(5). Performance Co-Pilot PCP PMDATE(1)
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