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Top Forums Shell Programming and Scripting Sorting problem: Multiple delimiters, multiple keys Post 302538043 by Ryan. on Monday 11th of July 2011 02:49:21 PM
Old 07-11-2011
Quote:
Originally Posted by alister
Are hours, minutes and seconds all zero padded? For example, 01:02:03 instead of 1:2:3 or 1:02:03? If so, you do not need to modify anything. You can use the default lexicographical sort with the date and time fields as the keys.

Also, you mentioned that hours range betwee 1-23. In case it's relevant, that's only a 23 hour day.

If the source file is 50+ GB, you are going to need a lot of ram. You'll probably need to split the file into smaller chunks, sort them individually, and then merge them with sort -m.

Regards,
Alister
Oddly the hours aren't zero padded but the minutes and seconds are. (I think it's like [1]?[0-9]:[0-5][0-9]:[0-5][0-9] in Regex-speak.)

I'm going to try to figure out how to split it up and then attempt sorting again -- thanks.

Last edited by Ryan.; 07-11-2011 at 04:10 PM.. Reason: Wrong
 

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sttime(3)						    ShapeTools Toolkit Library							 sttime(3)

NAME
stMktime, stWriteTime - date and time handling SYNOPSIS
#include <config.h> #include <sttk.h.h> time_tstMktime (char *string); char*stWriteTime (time_t date); DESCRIPTION
stMktime scans the given string and tries to read a date and time from it. It understands various formats of date strings. The following is a list of all valid formats, optional parts in brackets. [Tue] Jan 5[,] [19]93 This includes the standard asctime(3) format. Jan 5 With no year given, the year defaults to the current year. [19]93/01/05 This notation requires month and day represented by exactly two digits. 5.1.[19]93 This is the usual German notation. 5.1. German notation referencing the current year. A certain time, given together with the date must always have the following form. hours:minutes[:seconds] Each of the fields must be an integer value within the proper range (hours: 0-23, minutes and seconds: 0-59). Values below 10 may be written as one digit numbers. The time value may be placed anywhere in the date string: at the beginning, at the end, or somewhere in the middle. Any amount of white- space may be given between a field of the time value and the separating colon. The time is always considered to be local time. stWriteTime generates a time string similar to asctime(3) from its date argument. SEE ALSO
asctime(3) BUGS
Time Zone Names within the time string (like `MET') are not handled properly. In most cases they will cause a failure. sttk-1.7 Thu Jun 24 17:43:35 1993 sttime(3)
All times are GMT -4. The time now is 01:10 PM.
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