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Full Discussion: Date Sorting
Top Forums Shell Programming and Scripting Date Sorting Post 302113911 by LiquidChild on Wednesday 11th of April 2007 04:32:47 AM
Old 04-11-2007
Date Sorting

Hi,

I have a list of files that take on the format ABCDE_yymmdd and wish to sort them in ascending date order. I can't use the unix time stamp for the file as this could possibly be different from the date given in the file name.

Does anyone know of any way this can be done using unix shell scripting and/or awk(nawk)?

What i already have:

constructFileList()
{

if [ -f $DataDir/$FileListFile ]
then
rm -f $DataDir/$FileListFile
fi

for FILE in `ls -1 $DataDir/ABCDE_??????.dat`
do
echo $(basename $FILE)|nawk -f sort.awk
done |sort|while read FILENAME
do
echo ${FILENAME#??????} >> $DataDir/$FileListFile
done
}

The sort.awk script:

function prisort(STRING)
{
return_str = substr(STRING,11,2) substr(STRING,9,2) substr(STRING,7,2) STRING
return return_str
}

#Main Routine
{
print prisort($1)
}

Thanks

Last edited by LiquidChild; 04-11-2007 at 05:38 AM..
 

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URLCODING(3)						 libbash urlcoding Library Manual					      URLCODING(3)

NAME
urlcoding -- a Libbash library for encoding and decoding URL's. SYNOPSIS
urlEncodeString [-l] <STRING> urlEncodeFile [-l] <FILE> urlEncodeStream [-l] urlDecodeString <STRING> urlDecodeFile <FILENAME> urlDecodeStream DESCRIPTION
urlcoding is a collection of functions that convert ASCII-text to standard URL's and vice-versa. The AWK code used is based on code by Heiner Steven <heiner.steven@odn.de> The function list: urlEncodeString Creates a URL from an ASCII string urlEncodeFile Converts a file into URL-valid text urlEncodeStream Converts standard input into URL-valid text urlDecodeString Converts a URL-encoded text back to a plain-text form urlDecodeFile Coverts URL-encoded text in a file back to plain text urlDecodeStream Converts URL-encoded standard input to text Detailed interface description follows. The [-l] option for the encoding functions should be used when line-feed characters (' ') are to be encoded as well. All functions print the results of their conversions to standard output. The exit status of all functions is that of the command 'awk', with '0' for success FUNCTIONS DESCRIPTIONS
urlEncodeString [-l] <STRING> Converts STRING - a string of ASCII characters - to URL. urlEncodeFile [-l] <FILE> Coverts FILE of URL-encoded text to plain text urlEncodeStream [-l] Converts text from standard input to URL-text. urlDecodeString <STRING> Converts URL-encoded string STRING back to text. urlDecodeFile <FILENAME> Converts the URL-encoded text in FILE to plain text. urlDecodeStream Converts the URL-encoded text from standard input to plain-text AUTHORS
Alon Keren <alon.keren@gmail.com> SEE ALSO
ldbash(1), libbash(1) Linux Epoch Linux
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