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Full Discussion: Sort By Date and Time
Top Forums Shell Programming and Scripting Sort By Date and Time Post 302155396 by rikxik on Thursday 3rd of January 2008 09:12:37 PM
Old 01-03-2008
Question

Quote:
Originally Posted by Raynon
Hi rikxik,

It still doesn't work. Can you help ?

$ ls -l
total 0
-rw-r--r-- 1 raynon real 4 Jan 2 17:06 abc_071128_144121_data
-rw-r--r-- 1 raynon real 4 Jan 2 17:06 bbb_071128_113329_data
-rw-r--r-- 1 raynon real 6 Jan 2 17:06 zzz_071128_163017_data_interim

$ ls -1 |sort -t'_' -k2,2 -k3,3
sort: option requires an argument -- k
sort [-bcdfiMmnru] [-o output] [-T directory] [-ykmem] [-t char]
[+pos1 [-pos2]] [-k field_start[type][,field_end[type]] [file...]

$ ls -1 |sort -t"_" -k2,2 -k3,3
sort: option requires an argument -- k
sort [-bcdfiMmnru] [-o output] [-T directory] [-ykmem] [-t char]
[+pos1 [-pos2]] [-k field_start[type][,field_end[type]] [file...]
Quite strange - the command I posted is in accordance with the syntax your sort is throwing out.

Ok - first do this and see if you get filename listing (I can't believe I have to do this!):
Code:
$ ls -1
abc_071128_144121_data
bbb_071128_113329_data
fff_071128_122837_data
hhh_071128_120728_data
jjj_071129_010544_data
qqq_071129_002603_data
xxx_071128_123524_data

Once the above is verified, try this:

Code:
ls -1 |sort -t'_' +1 +2

@Yamini
sort -t'_' -k2,2 -k3,3 means first sort on starting field 2 and ending field 2 i.e. effectively on field 2. Then similarly on field 3.

HTH
 

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CSSORT(1p)						User Contributed Perl Documentation						CSSORT(1p)

NAME
cssort -- Czech sort FORMAT
cssort [ "-c"list | "-f"list ["-d"regexp]] [files ...] SYNOPSIS
cssort -c10-15,50-,25-45 < file cssort -f3,5-6 < file cssort -f3,5-6 -s: < file DESCRIPTION
Cssort is a utility that sorts input lines according to rules used in the Czech language. You can run it without any options, then it just uses whole lines for sorting. With the options, it's possible to specify parts of the lines to be used for comparison. list A comma-separated list of integer field numbers or field ranges. The are indexed from 1 and if a range is open (eg. "5-"), it means all remaining fields from the starting number. -c Stands for columns and the list that follows specifies byte ranges on the line. You will probably use this option to sort data with fixed width fields. -f Fields that will be used for sort. -d Delimiter that separates fields in the -f option. It is a Perl regular expression, the default is "[ ]+", which means any number of spaces or tabs in a row. The program assumes ISO-8859-2 encoding. Some way to specify another input encoding will come in the next versions. If you need to sort files with different encodings, you might want to check the cstocs conversion utility. SEE ALSO
Cz::Sort(3), cstocs(1). AUTHOR
Jan Pazdziora, adelton@fi.muni.cz. perl v5.10.1 2010-01-16 CSSORT(1p)
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