Programming :: SORT Command Versus Unix SORT
May 4, 2010
We switched from unix to linux and we have an old report that extracted data from a database, output to an ascii file and then sorted the results in the file based on different arguments. The report now blows up when it runs,and I can only guess it is because the options for sort on linux differ slightly from unix.For example, here is one of the commands issued from within the report app that ran on the old unix box:
if sort-sequence = "descending" then
'sort -t~" -f +3.0f -4.0 +5.0r -6.0 -f '
else
'sort -t~" +3.0f -4.0 +1.0f -2.0 -f'
I will eventually rewrite the report to store the data in a local table, but I can simply adjust the options to suit the requirments of linux. Basically, I need to know if this can be a quick fix for the short term.
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Feb 28, 2010
What options should I use when I'm using the sort command to sort the top 5 CPU processes (ps -eo user,pid,ppid,%cpu,%mem,fname | sort ??? | head -5) showing max to min usage?
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Jul 2, 2010
I have a problem, I need to launch another binary from my application, but I need to get the control back once the other binary is initialized. fork/exec doesn't seem to give anything on that side using pthreads I'm able to wait until the new thread exits, but that's not what I want at the moment I'm using popen, but it doesn't seem to do the job right...
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May 17, 2010
When I try to invoke 'source' command from within a shell script, namely, myscript.sh, I get the following error message code...
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Mar 18, 2010
Here is what I am doing I have a file, a.txt for example, with following contents:
Code:
coreutils install
cpio install
cpp install
cpp-4.3 install
dbus install
[Code]...
So it seems like the sorting algo. for dpkg --get-selections is different than sorting algo. of 'sort' command when it encounters "-" (hyphen). How can I sort the original file (a.txt) in such a way that it produces the output file ,b.txt, exactly the same.
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Dec 21, 2010
I am reading a tool manual and it instructs to use such a command:
Code:
Especially, what does the 'sort' parameters and awk do?
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Jul 15, 2010
It sure looks not quite sorted to me. See lines 3 and 4.
Code:
altair/root /root 250# sort -k1 < files.out | head -6
/bin base-files
/bin bash
/bin/bash bash
/bin bsdutils
[Code]...
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Dec 9, 2009
I've been using linux for a long time, and I just ran into a problem that has me stumped. Any time I mistype a command, it says "Command not found."... yea, I know that's normal. But it doesn't return me to my # prompt. I have to press Ctrl+C to get back. code...
I know I do have one issue with this computer, I have 2 blown caps on my motherboard. This was a dual boot system, but after a virus with winblows, I decided to switch it to strictly linux. (roommates... *grumble*) I think I was running fc10 before I wiped the hd & installed fc12. Fc12 does seem to be running slower, and I still haven't got my sound card working properly... but that issue is for another topic...
-YungBlood Reborn
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May 14, 2010
What is the command to sort a text file by the second word?
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Feb 27, 2011
I'm learning GTK , and would like to use Codeblocks, and/or KDEvelop, and compile my c files using that, but always get an error about gtk/gtk.h not found, but can't figure out how to add the commands... I normally type gcc -o Program1 main.c `pkg-config --libs --cflags gtk+-2.0` That's a lot to type every time to compile.. Isn't there an easier way, in KDevelop, Monodevelop, and/or Codeblocks to make this step quicker, by adding some sort of I-/usr/include commands, or something?? thanks in advance, =). I looked online for some results, but didn't come across anything handy..
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Aug 25, 2010
I am executing the script.
with help of cron job but it is not executing in cron job.
i check owner and chmod and create the file and execute manually it is working fine but in cron job i set below
Crontab -e
8 14 * * * /home/tplinux/webapp/tpadminhost/collect_ejxml/ejrename.sh
wq!
after that wait till that time but script is giving message no such file in directory but same thing is excute manually it is running fine and found the files.
Below is my script details
file name ejrename.sh. code...
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Jan 27, 2010
I have program like this:
Code:
with 'gcc -g' it runs well, but with 'gcc -g -O3' (with -O2 too) it crash.
output is something like this:
Code:
and gdb says
Code:
Why it try to compare something at address 0x209 when this address is not in the vector?
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May 5, 2010
i have text file that filename contain the date of creation (i.e 2010.05.02.log).I would like to create a script that:-Ask for start date -Ask for end date- Concatenate all file on the requested period by date order.
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Feb 17, 2011
Please I want Know the code of the Merge Sort with threads in C
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Apr 4, 2010
I am trying to get the title of all the windows that i open,but cant make it right... code...
the problem is,that it will write the current windows many times,until i open another window,and so on.
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Dec 1, 2010
I have a hash of hashes and I need to sort this by value and write to a javascript array file..Currently I am using the following
foreach my $key(sort { keys %{$trans{$a}} <=> keys %{$trans{$b}}} keys %transmission)
{
foreach my $role(sort {$trans{$key}{$a} cmp $trans{$key}{$b}} keys %{$trans{$key}})
[code]...
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May 5, 2010
I am trying to import variable values from a profile file to a perl program.
I am using the below command for doing it.
Quote:
system (". /opt/bbfb/bin/setbbfbenv $codeset");
the above command does make variable values available to the running perl program..
Can some one help me on this front..
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Apr 30, 2010
I have a multi-dimensional array like so:
Code:
Array (
[0] => Array (
[0] => Eleven
[1] => NumberEleven
[2] => 11 )
[1] => Array (
[0] => Twelve
[1] => NumberTwelve
[2] => 12 )
[2] => Array (
[0] => AnotherEleven
[1] => Eleven,Again
[2] => 11 )
I need to sort it by array[ $key ][ 2 ] so that it is sorted like so:
Code:
Array (
[0] => Array (
[0] => Eleven
[1] => NumberEleven
[2] => 11 )
[1] => Array (
[0] => AnotherEleven
[1] => Eleven,Again
[2] => 11 )
[2] => Array (
[0] => Twelve
[1] => NumberTwelve
[2] => 12 )
I've looked at the php array docs the closet thing I found was array_multisort which won't work for my above requirements, does anyone have any insight to how to sort this way?
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Mar 10, 2009
Using PHP 5.x. I would like to sort a set of values first numerically, then alphabetically. For example, here's my code so far:
Code:
<?php
print "<p style="font-family:verdana;font-size:10pt">
";
$myArray = array("1223:starfruit", "34112:oranges", "1223:zucchini", "321:apples", "34112:pears", "1223:tomatoes");
[code]....
I have fiddled with array_multisort but I can't seem to get my head around it or the many sort routines in PHP.
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May 10, 2010
Here's my code for bubble sort with double type
Code:
#include <stdio.h>
void swap_double( double *a, double *b )
{
double _t = *a;
code....
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Mar 23, 2011
I'm searching for an algorithm to sort a binary min heap tree. That's when in root i have the smallest value in the tree. The only restriction it has, is that the parent must be smaller the its two children. i think something like quick-sort, but i don't know how to implement it.
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Apr 29, 2010
I have for example the following IP addresses:
24.172.220.218
41.239.36.19
63.215.202.234
66.176.124.22
[code]....
How can I sort those IP addresses? I want to sort them using the first 3 numbers I also want to count the number of times that address is repeated This is a batch program.
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Jun 24, 2011
I had a data structure like this:
I sort the list like this:
I think the logic is correct, maybe just some details.
Now my question is
1) Can I simply merge node1 and 2 without sorting? Like node_list1.merge(node_list2);
2) If not, how can I copy list1 and 2 into list3?
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Oct 20, 2010
how to pipe the current directory listing into sort so that the output is the date in descending order (primary sort key). If there are multiple entries with the same date, I'd like the times sorted in ascending order. It seems simple but for some reason this isn't working:
ls -l | sort -k 6r -k 7
For some reason it doesn't seem to ever get to the second sort key when using column 6 (last modified date).
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Jul 27, 2011
I have two different table in a database in mysql that has no share key with each other and I want to sort them with each other on their date time column I mean when I sort it row X of table A that is older that row Y of table B comes earlier.
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Mar 18, 2011
I am making online Myproject using java in which you can make your porject online or with your team, my problem is that when i drag one component from one page it disappear from another frame & i am unable to solve the problem that if the user don't have install java than myproject in not useable i am giving a span sort of code of my project:
[code]...
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Feb 18, 2010
The perl script I wrote works fine if I print the result to screen
x0_amber.pl 1 1000 0 5
But whenever I want to output to a file with
x0_amber.pl 1 1000 0 5 > x0_out
it never really prints out to the file.
It worked earlier, but I was playing with my PATH lately, I don't know if it's related to that
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Nov 10, 2009
Each line of the file I am sorting is in the following format:
<url> <month> <day>
For example:
[URL]
I wrote the following to sort:
Code:
#!/usr/bin/perl
$in = shift;
chomp($in);
[code]....
The script worked fine for my small testing files, but failed in my input file. The input file is 18MB and containing more than 300,000 lines. The output will contains some lines like that:
url_one 10 1
url_two 10 1
url_three 10 3
url_four 10 1
Is that because my file is too big for perl to handle ?
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Sep 28, 2010
I have very little linux experience. And need some help with a bash script. I need to a script I can set cron to run to sort files out of a holding folder into final folders. It doesn't necessarily have to be bash, but I think it would be sufficient for this. File names are formatted as such when created: Dest-Date-Time-CID-Destination# I want the files to be moved from a all in one holding folder to a folder structure like this.
.../storage/year/month/day/Destination#/VarX(type)/hour/CID/'File'
I would need an if/else if/else statement to say if Dest = A set VarX = B If for example the file name was
infinity-20100927-17:00-1112223333-4445556666.wav
I would like the above file to end up moved from
.../holding
to
.../storage/2010/09/27/4445556666/Inbound/17/1112223333/infinity-20100927-17:00-1112223333-4445556666.wav
So the script will need to make directories based on information in the file name which is delimited by single dashes. Then move files from the holding folder to the newly created "sorted" folders.
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Jun 3, 2010
I have a directory listing with many subdirectories having many files. I want to recursively search for the oldest 5 files starting from the base directory and not 5 from each subdirectory. I am writing a shell script which sorts them using ls -lRtur|egrep "txt|jpg" > /tmp/file1 Now from this /tmp/file1 file I want to sort the files same as what the ls -ltr command does that is oldest file time to newest file time first. How do I sort based on Linux time stamp? The files itself also have Linux timestamps embedded in them So I can sort based after extracting them as well if it is easier.
My /tmp/file1 has entries like below.
-rw-rw-r--. 1 usr1 usr1 705 2010-01-22 17:25 sample20100603173659.jpg
I want to get the 5 oldest files and then delete them.
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