Sponsored Content
Full Discussion: Sort and Unique in Perl
Top Forums Shell Programming and Scripting Sort and Unique in Perl Post 302165578 by deepakwins on Friday 8th of February 2008 08:29:29 AM
Old 02-08-2008
Quote:
Originally Posted by rvegmond
Maybe realy simple:

cat $file|awk -F\| '{print $3}'|sort -u

(I think some awk guru can do it with less commands)...
I can handle with cut, sort -u, and wc commands.

But looking for perl methods!
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

unique sort contents of a variable

Hi , I have #echo $var1 #hdisk2 hdisk3 hdisk0 hdisk2 Now I need to remove duplicate entries from this . ie. after sorting it should only have hdisk2 hdisk3 hdisk0 . I can have these values in a array as well . I understand we can use sort -u to remove the duplicates in a... (2 Replies)
Discussion started by: praveenbvarrier
2 Replies

2. Shell Programming and Scripting

Perl sort unique by one field only

Hi all, I've searched the forum and I can find some code to sort uniquely in perl but not by a single field. I have a file with data such as the following: 1,test,34 1,test2,65 2,test,35, 1,test3,34 2,test,34 What i want to do is sort it uniqely by the first field only so I'd end... (2 Replies)
Discussion started by: Donkey25
2 Replies

3. Shell Programming and Scripting

What some ideas with sort and get unique data

Hi all, I am writing a script where i can parse through the directory and get common string in two directories i get. The command below SUN_PLATFORM=`$FIND $STREAM_PATH . -depth -name ShareableEntities | $AWK -F"/" '{if($10 ~ /sun5/) print $0}'` gives the following output:- ... (1 Reply)
Discussion started by: asirohi
1 Replies

4. Shell Programming and Scripting

Awk sort and unique

Input file --------- 12:name1:|host1|host1|host2|host1 13:name2:|host1|host1|host2|host3 14:name3: ...... Required output --------------- 12:name1:host1(2)|host1(1) 13:name2:host1(2)|host2(1)|host3(1) 14:name3: where (x) - Count how many times field appears in last column ... (3 Replies)
Discussion started by: greycells
3 Replies

5. Shell Programming and Scripting

Unique sort with two fields

I have a file with contents below 123,502 123,506 123,702 234,101 235,104 456,104 456,100 i want to sort such that i get a unique value in column A, and for those with multiple value in A, i want the lowest value in B. output should be 123,502 234,101 235,104 456,100 (3 Replies)
Discussion started by: dealerso
3 Replies

6. Shell Programming and Scripting

Unique sort with three fields

I have another file with three columns A,B,C as below 123,1,502 123,2,506 123,3,702 234,4,101 235,5,104 456,6,104 456,7,100 i want to sort such that i get a unique value in column A, and for those with multiple value in A, i want the lowest value in C. output should be Code:... (3 Replies)
Discussion started by: dealerso
3 Replies

7. Shell Programming and Scripting

sort split merge -u unique

Hi, this is about sorting a very large file (like 10 gb) to keep lines with unique entries across SOME of the columns. The line originally looked like this: sort -u -k2,2 -k3,3n -k4,4n -k5,5n -k6,6n file_unsorted > file_sorted please note the -u flag. The problem is that this single... (4 Replies)
Discussion started by: jbr950
4 Replies

8. UNIX for Dummies Questions & Answers

Print unique lines without sort or unique

I would like to print unique lines without sort or unique. Unfortunately the server I am working on does not have sort or unique. I have not been able to contact the administrator of the server to ask him to add it for several weeks. (7 Replies)
Discussion started by: cokedude
7 Replies

9. Shell Programming and Scripting

Sort unique by multiple fields

i need to sort to get all the unique records based on the 1st and 2nd column, and keep the record with the highest value on 5th column if there are duplicates, every column with varies length a^2^x^y^z bxc^2xx2^aa^bvxxxx^cdd a^3^1^2^3 a^2^x^1^c I want a result which will only keep the 1st... (2 Replies)
Discussion started by: dtdt
2 Replies

10. Shell Programming and Scripting

Sort unique

Hi, I have an input file that I have sorted in a previous stage by $1 and $4. I now need something that will take the first record from each group of data based on the key being $1 Input file 1000AAA|"ZZZ"|"Date"|"1"|"Y"|"ABC"|""|AA 1000AAA|"ZZZ"|"Date"|"2"|"Y"|"ABC"|""|AA... (2 Replies)
Discussion started by: Ads89
2 Replies
SHELL-QUOTE(1p) 					User Contributed Perl Documentation					   SHELL-QUOTE(1p)

NAME
shell-quote - quote arguments for safe use, unmodified in a shell command SYNOPSIS
shell-quote [switch]... arg... DESCRIPTION
shell-quote lets you pass arbitrary strings through the shell so that they won't be changed by the shell. This lets you process commands or files with embedded white space or shell globbing characters safely. Here are a few examples. EXAMPLES
ssh preserving args When running a remote command with ssh, ssh doesn't preserve the separate arguments it receives. It just joins them with spaces and passes them to "$SHELL -c". This doesn't work as intended: ssh host touch 'hi there' # fails It creates 2 files, hi and there. Instead, do this: cmd=`shell-quote touch 'hi there'` ssh host "$cmd" This gives you just 1 file, hi there. process find output It's not ordinarily possible to process an arbitrary list of files output by find with a shell script. Anything you put in $IFS to split up the output could legitimately be in a file's name. Here's how you can do it using shell-quote: eval set -- `find -type f -print0 | xargs -0 shell-quote --` debug shell scripts shell-quote is better than echo for debugging shell scripts. debug() { [ -z "$debug" ] || shell-quote "debug:" "$@" } With echo you can't tell the difference between "debug 'foo bar'" and "debug foo bar", but with shell-quote you can. save a command for later shell-quote can be used to build up a shell command to run later. Say you want the user to be able to give you switches for a command you're going to run. If you don't want the switches to be re-evaluated by the shell (which is usually a good idea, else there are things the user can't pass through), you can do something like this: user_switches= while [ $# != 0 ] do case x$1 in x--pass-through) [ $# -gt 1 ] || die "need an argument for $1" user_switches="$user_switches "`shell-quote -- "$2"` shift;; # process other switches esac shift done # later eval "shell-quote some-command $user_switches my args" OPTIONS
--debug Turn debugging on. --help Show the usage message and die. --version Show the version number and exit. AVAILABILITY
The code is licensed under the GNU GPL. Check http://www.argon.org/~roderick/ or CPAN for updated versions. AUTHOR
Roderick Schertler <roderick@argon.org> perl v5.8.4 2005-05-03 SHELL-QUOTE(1p)
All times are GMT -4. The time now is 07:28 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy