05-18-2009
sort -r reverses the sense of all comparisons.
If you are on linux try msort - it allows you to invert (-i) the sense of the comparison on a field by field basis.
Otherwise you will have to write a sort in perl or C or python... whatever you like.
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hi,
I have an urgent task here. I am required to sort a flat file based on multiple columns which are based on the character position in that line. I am restricted to use the character position instead of the space and sort +1 +2 etc to do the sorting.
I understand that there is a previous... (8 Replies)
Discussion started by: cucubird
8 Replies
2. Shell Programming and Scripting
Dear All,
I have below attached file in which i have many nos, i want the last ascending order nos. The brief description is given below.
File
315
381
432
315
381
432
315
381
432
315
381
432
315
381
432 (6 Replies)
Discussion started by: pravani1
6 Replies
3. UNIX for Dummies Questions & Answers
How can I sort a file as follows ?
cols 1 - 10 ascending
cols 11 - 18 descending
cols 19 - 20 ascending
Thanks (1 Reply)
Discussion started by: don_0110
1 Replies
4. Shell Programming and Scripting
Hi,
I have a requirement whereby I have to sort a flat file based on Multiple Columns (similar to ORDER BY Clause of Oracle). I am getting 10 columns in the flat file and I want the file to be sorted on 1st, 3rd, 4th, 7th and 9th columns in ascending order. The flat file is pipe seperated.
Any... (15 Replies)
Discussion started by: dharmesht
15 Replies
5. Shell Programming and Scripting
I have a bash script which takes a log file with each record separated by a #. The records have multiple fields but field $1 is always the date and time. When the script is run it prints the record just fine from oldest to newest. I need to have records print out from newest first.
Here is the... (7 Replies)
Discussion started by: numele
7 Replies
6. Shell Programming and Scripting
Hi
I have a problem with sort command :
sort -nk 1.28,1.34 file | sort -nrk 1.27 file | sort -nk 1.22,1.25 file |sort -nk 1.13,1.21 file | sort -nk 1.9,1.12 file | sort -nk 1.1,1.8 file
This is the input file
0000000100010000000200004090317003
0000000100010000000230001020592002... (3 Replies)
Discussion started by: Fafa
3 Replies
7. Shell Programming and Scripting
Hello,
I have data where words are separated by a delimiter. In this case "="
The number of delimiters in a line can vary from 4to 8. The norm is 4.
Is it possible to have a script where the file could be separated starting with highest number of delimiters and ending with the lowest
An... (8 Replies)
Discussion started by: gimley
8 Replies
8. Shell Programming and Scripting
I want to sort values of a hash in ascending order.
my %records;
for my $value (sort values %records){print $value,"\n";}
When I use the above code I get values in this order: 1,10,11,2,3,4,5,6,7,8,9. But, I need values in my output in this order: 1,2,3,4,5,6,7,8,9,10,11.
Can Someone... (1 Reply)
Discussion started by: koneru_18
1 Replies
9. UNIX for Dummies Questions & Answers
Hi,
I have this single file with a number of sequence inside it of format
>string1
data
>string100
data
>string10
.....
>string5
...
>string67
......
the dots represent data.
I wanted to get the sequences arranged in ascending order like
>string1
data
>string5 (5 Replies)
Discussion started by: sonia102
5 Replies
10. UNIX for Dummies Questions & Answers
Hi,
I am trying to sort the following file in descending order of its fourth column.
2 1 363828 -2.423225e-03
3 1 363828 4.132763e-03
3 2 363828 8.150133e-03
4 1 363828 4.126890e-03
I use
sort -k4,4g -r input.txt > output.txt ... (1 Reply)
Discussion started by: evelibertine
1 Replies
sort(1) General Commands Manual sort(1)
Name
sort - sort file data
Syntax
sort [options] [-k keydef] [+pos1[-pos2]] [file...]
Description
The command sorts lines of all the named files together and writes the result on the standard output. The name `-' means the standard
input. If no input files are named, the standard input is sorted.
Options
The default sort key is an entire line. Default ordering is lexicographic by bytes in machine collating sequence. The ordering is
affected globally by the following options, one or more of which may appear.
-b Ignores leading blanks (spaces and tabs) in field comparisons.
-d Sorts data according to dictionary ordering: letters, digits, and blanks only.
-f Folds uppercase to lowercase while sorting.
-i Ignore characters outside the ASCII range 040-0176 in nonnumeric comparisons.
-k keydef The keydefargument is a key field definition. The format is field_start, [field_end] [type], where field_start and field_end
are the definition of the restricted search key, and type is a modifier from the option list [bdfinr]. These modifiers have the
functionality, for this key only, that their command line counter-parts have for the entire record.
-n Sorts fields with numbers numerically. An initial numeric string, consisting of optional blanks, optional minus sign, and zero
or more digits with optional decimal point, is sorted by arithmetic value. (Note that -0 is taken to be equal to 0.) Option n
implies option b.
-r Reverses the sense of comparisons.
-tx Uses specified character as field separator.
The notation +pos1 -pos2 restricts a sort key to a field beginning at pos1 and ending just before pos2. Pos1 and pos2 each have the form
m.n, optionally followed by one or more of the options bdfinr, where m tells a number of fields to skip from the beginning of the line and
n tells a number of characters to skip further. If any options are present they override all the global ordering options for this key. If
the b option is in effect n is counted from the first nonblank in the field; b is attached independently to pos2. A missing .n means .0; a
missing -pos2 means the end of the line. Under the -tx option, fields are strings separated by x; otherwise fields are nonempty nonblank
strings separated by blanks.
When there are multiple sort keys, later keys are compared only after all earlier keys compare equal. Lines that otherwise compare equal
are ordered with all bytes significant.
These are additional options:
-c Checks sorting order and displays output only if out of order.
-m Merges previously sorted data.
-o name Uses specified file as output file. This file may be the same as one of the inputs.
-T dir Uses specified directory to build temporary files.
-u Suppresses all duplicate entries. Ignored bytes and bytes outside keys do not participate in this comparison.
Examples
Print in alphabetical order all the unique spellings in a list of words. Capitalized words differ from uncapitalized.
sort -u +0f +0 list
Print the password file, sorted by user id number (the 3rd colon-separated field).
sort -t: +2n /etc/passwd
Print the first instance of each month in an already sorted file of (month day) entries. The options -um with just one input file make the
choice of a unique representative from a set of equal lines predictable.
sort -um +0 -1 dates
Restrictions
Very long lines are silently truncated.
Diagnostics
Comments and exits with nonzero status for various trouble conditions and for disorder discovered under option c.
Files
/usr/tmp/stm*, /tmp/* first and second tries for temporary files
See Also
comm(1), join(1), rev(1), uniq(1)
sort(1)