I have a file:
Fred
Fred
Fred
Jim
Fred
Jim
Jim
If sort is executed on the listed file, shouldn't the output be?:
Fred
Fred
Fred
Fred
Jim
Jim
Jim (3 Replies)
Using the last, uniq, sort and cut commands, determine how many times the different users have logged in.
I know how to use the last command and cut command...
i came up with last | cut -f1 -d" " | uniq
i dont know if this is right, can someone please help me... thanks (1 Reply)
Does anyone have a quick and dirty way of performing a sort and uniq in perl?
How an array with data like:
this is bkupArr BOLADVICE_VN
this is bkupArr MLT6800PROD2A
this is bkupArr MLT6800PROD2A
this is bkupArr BOLADVICE_VN_7YR
this is bkupArr MLT6800PROD2A
I want to sort it... (4 Replies)
Input File is :
-------------
25060008,0040,03,
25136437,0030,03,
25069457,0040,02,
80303438,0014,03,1st
80321837,0009,03,1st
80321977,0009,03,1st
80341345,0007,03,1st
84176527,0047,03,1st
84176527,0047,03,
20000735,0018,03,1st
25060008,0040,03,
I am using the following in the script... (5 Replies)
Hi All,
I have a text file with the format shown below. Some of the records are duplicated with the only exception being date (Field 15). I want to compare all duplicate records using subscriber number (field 7) and keep only those records with greater date.
... (1 Reply)
I have a flatfile A.txt
2012/12/04 14:06:07 |trees|Boards 2, 3|denver|mekong|mekong12
2012/12/04 17:07:22 |trees|Boards 2, 3|denver|mekong|mekong12
2012/12/04 17:13:27 |trees|Boards 2, 3|denver|mekong|mekong12
2012/12/04 14:07:39 |rain|Boards 1|tampa|merced|merced11
How do i sort and get... (3 Replies)
Hi again,
I have files with the following contents
datetime,ip1,port1,ip2,port2,number
How would I find out how many times ip1 field shows up a particular file? Then how would I find out how many time ip1 and port 2 shows up?
Please mind the file may contain 100k lines. (8 Replies)
Hi !
I am trying to remove doubbled entrys in a textfile only between delimiters.
Like that example but i dont know how to do that with sort or similar.
input:
{
aaa
aaa
}
{
aaa
aaa
}
output:
{
aaa
}
{ (8 Replies)
Hello all,
Need to pick your brains,
I have a 10Gb file where each row is a name, I am expecting about 50 names in total. So there are a lot of repetitions in clusters.
So I want to do a
sort -u file
Will it be considerably faster or slower to use a uniq before piping it to sort... (3 Replies)
Discussion started by: senhia83
3 Replies
LEARN ABOUT DEBIAN
devel::leak
Leak(3pm) User Contributed Perl Documentation Leak(3pm)NAME
Devel::Leak - Utility for looking for perl objects that are not reclaimed.
SYNOPSIS
use Devel::Leak;
... setup code
my $count = Devel::Leak::NoteSV($handle);
... code that may leak
Devel::Leak::CheckSV($handle);
DESCRIPTION
Devel::Leak has two functions "NoteSV" and "CheckSV".
"NoteSV" walks the perl internal table of allocated SVs (scalar values) - (which actually contains arrays and hashes too), and records
their addresses in a table. It returns a count of these "things", and stores a pointer to the table (which is obtained from the heap using
malloc()) in its argument.
"CheckSV" is passed argument which holds a pointer to a table created by "NoteSV". It re-walks the perl-internals and calls sv_dump() for
any "things" which did not exist when "NoteSV" was called. It returns a count of the number of "things" now allocated.
CAVEATS
Note that you need a perl built with -DDEBUGGING for sv_dump() to print anything, but counts are valid in any perl.
If new "things" have been created, "CheckSV" may (also) report additional "things" which are allocated by the sv_dump() code.
HISTORY
This little utility module was part of Tk until the variable renaming in perl5.005 made it clear that Tk had no business knowing this much
about the perl internals.
AUTHOR
Nick Ing-Simmons <nick@ni-s.u-net.com>
perl v5.14.2 2004-03-18 Leak(3pm)