Arch Linux

mecon

Member

Registered: 2007-06-25

Posts: 31

Arch Linux Worse Than Failure Programing Contest for June/July

Write A Cat Clone. Here Are the 3 category's

A: Most Unnecessary Long Program
B: Most Obfusticated Program
C: Longest Program

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Arch Linux the best thing to come out of Canada since Rush

Dusty

Schwag Merchant

From: Medicine Hat, Alberta, Canada

Registered: 2004-01-18

Posts: 5,986

Website

Re: Arch Linux Worse Than Failure Programing Contest for June/July

Stickied for the duration. Maybe we'll even remember to unstick it this time. :-)

Dusty

---

** Arch Linux Apparel and more ** Arch Linux stickers, laptop bags, jewelery ** I wrote a book on Python 3 ** and one on mental health **

mecon

Member

Registered: 2007-06-25

Posts: 31

Re: Arch Linux Worse Than Failure Programing Contest for June/July

if ARGV == []
    while i = gets
        print i
    end
else
    for i in ARGV
        File.open(i) do |f|
            for j in f.gets
                print j
            end
        end
    end
end

this is not a winning entry this is a minamal in a style not worthy of this contest and I'm not in the contest because I'm thejudge.

---

Arch Linux the best thing to come out of Canada since Rush

SleepingGiant08

Member

From: Ellicott City, MD USA

Registered: 2007-01-10

Posts: 124

Re: Arch Linux Worse Than Failure Programing Contest for June/July

I just saw this thread, decided to try. I am new to programing and we did this "cat" program in my C class.
Dont know if this qualifies

#include <stdio.h>

main(argc, argv)
int argc;
char *argv[];
{
    FILE *fp, *fpopen();

    if (argc == 1)
        filecopy(stdin);
    else
        while (--argc > 1)
            if ((fp = fopen(*++argv, "r")) == NULL) {
                printf("can't open %s\n", *argv);
                break;
            } else {
                filecopy(fp);
                fclose(fp);
            }
}

filecopy(fp)
FILE *fp;
{
    int c;


    while ((c =getc(fp)) != EOF)
        putc(c, stdout);
}

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Registered Linux User #439761

F

Member

Registered: 2006-10-09

Posts: 322

Re: Arch Linux Worse Than Failure Programing Contest for June/July

In Perl, of course:

#!/usr/bin/perl -w
sub cat { while(my $file = shift) { open FILE, $file; while(my $line = <FILE>) {print $line; } } } cat @ARGV;

SleepingGiant08

Member

From: Ellicott City, MD USA

Registered: 2007-01-10

Posts: 124

Re: Arch Linux Worse Than Failure Programing Contest for June/July

Yay longest program so far!!!

---

Registered Linux User #439761

Jessehk

Member

From: Toronto, Ontario, Canada

Registered: 2007-01-16

Posts: 152

Re: Arch Linux Worse Than Failure Programing Contest for June/July

Yay longest program so far!!!

I can beat that.

BTW, not to be critical, but that C code is very outdated. You might want to look into it.

/*
 * Clone of standard cat utility.
 * By Jessehk
 */
 
#define _GNU_SOURCE

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>

#define IN_BUFFSIZE 64u
#define INPUT_ERR -1

void read_error( char *filename, char *msg ) {
    fprintf( stderr, "%s: %s\n", filename, msg );
}

void read( FILE *src ) {
    char *line = NULL;
    size_t buffsize = IN_BUFFSIZE;
    
    while ( getline( &line, &buffsize, src ) != INPUT_ERR )
        fputs( line, stdout );
        
    free( line );
}

int main( int argc, char *argv[] ) {
    FILE *src;
    int i;

    if ( argc > 1 ) {
        for ( i = 1; i < argc; i++ ) {
            if ( (src = fopen( argv[i], "r" )) == NULL ) {
                read_error( argv[i], strerror( errno ) );
            } else {
                read( src );
                fclose( src );
            }
        }
    } else
        read( stdin );
        
    return EXIT_SUCCESS;
}

Last edited by Jessehk (2007-07-16 01:18:56)

SleepingGiant08

Member

From: Ellicott City, MD USA

Registered: 2007-01-10

Posts: 124

Re: Arch Linux Worse Than Failure Programing Contest for June/July

Yay longest program so far!!!

I can beat that.

BTW, not to be critical, but that C code is very outdated. You might want to look into it.

/*
 * Clone of standard cat utility.
 * By Jessehk
 */
 
#define _GNU_SOURCE

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>

#define IN_BUFFSIZE 64u
#define INPUT_ERR -1

void read_error( char *filename, char *msg ) {
    fprintf( stderr, "%s: %s\n", filename, msg );
}

void read( FILE *src ) {
    char *line = NULL;
    size_t buffsize = IN_BUFFSIZE;
    
    while ( getline( &line, &buffsize, src ) != INPUT_ERR )
        fputs( line, stdout );
        
    free( line );
}

int main( int argc, char *argv[] ) {
    FILE *src;
    int i;

    if ( argc > 1 ) {
        for ( i = 1; i < argc; i++ ) {
            if ( (src = fopen( argv[i], "r" )) == NULL ) {
                read_error( argv[i], strerror( errno ) );
            } else {
                read( src );
                fclose( src );
            }
        }
    } else
        read( stdin );
        
    return EXIT_SUCCESS;
}

Yeah the book we used is realy REALLY old, i hate programming anyway, but i gave what i know. And BTW you weren't being critical I appreciate you bringing it up!

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Registered Linux User #439761

mitsoko

Banned

From: In the Coal Chamber

Registered: 2007-05-08

Posts: 143

Re: Arch Linux Worse Than Failure Programing Contest for June/July

one question, do we just implement the basic cat command i.e .. read in > output ;; or do we also implement other features of the command?

edit: i couldn't sleep so i decided to go for it now; could you also add a category for most inefficient code?

Submission for Cat.A.B.C ?

#!/usr/bin/env python
#~ cat clone by raeven <norrian@gmail.com>
#~ file: cat.py, lines:56-3
import sys
a1=[]
a2=[]
sys.argv.pop(0)
x=sys.exit
for a in sys.argv:
    if a != '-':
        if a[0]=='-': a2.append(a)
        else: a1.append(a)
if '-h' in a2 or '--help' in a2:
    print 'Usage: cat.py [OPTION] [oLE]...'
    print 'Concatenate oLE(s), or standard input, to standard output.'
    print
    print '-h, --help     show this help screen'
    print '-n, --number   number all output lines'
    print
    print 'With no oLE, or when oLE is -, read standard input.'
    print 'Report bugs to <raeven@ArchLinux.forums>.'
    x(0)
s=sys.stdout
s_=s.flush
_s=s.write
def w(str):
    _s(str)
    s_()
def loop():
    i=0
    while True:
        i=i + 1
        yield i
if len(a1)==0 or a1==['-']:
    while loop():
        try:
            input=raw_input()
            print input
        except (KeyboardInterrupt,EOFError): break
else:
    for j in a1:
        try:
            o=open(j,'rb')
            r=o.readlines()
            n=len(r)
            for i in xrange(n):
                try:
                    ln=r[i]
                    p=len(str(n))
                    if '-n' in a2 or '--number' in a2:
                        f='%'+str(p)+'s| %s'
                        w(f%(str(i),ln))
                    else: w(ln)
                except IndexError:
                    pass
        except IOError: w('cat: %s:  No such file or directory' % j)

i dunno which category this belongs to, it's just such-a bad-ass script i figured it can go in each
i haven't even bothered checking for bug btw
:: about 53 lines :: but i added the -n option, dunno if it counts

Last edited by raeven (2007-07-16 05:29:28)

Peyton

Member

Registered: 2007-07-22

Posts: 36

Website

Re: Arch Linux Worse Than Failure Programing Contest for June/July

;; nasm -f elf <filename>.asm
;; ld -o <filename> <filename>.o
;; ./<filename>
section .bss
    q resb 1

section .text
    global _start
_start:
    pop eax
    cmp eax,2
    je y
    mov eax,0
    jmp w

y:
    pop ebx
    pop ebx
    mov eax,5
    int 80h

w:
    push ebp
    mov ebp,esp
    sub esp,4
    mov dword [ebp-4],eax

b:
    mov eax,3
    mov ebx,[ebp-4]
    mov ecx,q
    mov edx,1
    int 80h

    cmp eax,0
    je o

    mov eax,4
    mov ebx,1
    mov ecx,q
    mov edx,1
    int 80h

    jmp b

o:
    mov eax,6
    mov ebx,[ebp-4]
    int 80h
    
    mov eax,1
    mov ebx,0
    int 80h

mucknert

Member

From: Berlin // Germany

Registered: 2006-06-27

Posts: 510

Re: Arch Linux Worse Than Failure Programing Contest for June/July

Now those code-samples aren't really obfuscated at all. I think you can do worse!

---

Todays mistakes are tomorrows catastrophes.

Jessehk

Member

From: Toronto, Ontario, Canada

Registered: 2007-01-16

Posts: 152

Re: Arch Linux Worse Than Failure Programing Contest for June/July

Ok, here's my obfuscated attempt.

#define _GNU_SOURCE

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>

#define INB 64u
#define INE -1

#define JJ fprintf(E,"%s: %s\n",f,m)
#define FF fputs
#define K for
#define O (G>1)
#define B FILE
#define ZZ ;
#define I int
#define M &line
#define KK main
#define II free(Z)
#define Z line
#define R else
#define LL i
#define AA buffsize
#define G NN##c
#define VV !=
#define H NN##v
#define PP (
#define QQ )
#define Y S##_MM
#define C void
#define L fopen
#define HH size_t
#define P L(H[LL],"r")
#define V fclose
#define T return U;
#define DD INE
#define W s
#define SS }
#define J (i=1;i<G;i++)
#define S read
#define D NULL
#define UU ==
#define U EXIT_SUCCESS
#define CC BB(&Z,&AA,W)
#define E stderr
#define BB getline
#define RR {
#define F while
#define OO *
#define YY ,
#define EE stdout
#define A char
#define X stdin
#define N if
#define WW [
#define TT =
#define Q strerror(errno)
#define GG FF(Z,EE)
#define MM error
#define NN arg
#define XX ]

C Y PP A
OO f YY A
OO m QQ RR
JJ ZZ SS C
S PP B OO
W QQ RR A
OO Z TT D
ZZ HH AA TT
INB ZZ F PP
CC VV DD QQ
GG ZZ II ZZ
SS I KK PP
I G YY A
OO H WW XX
QQ RR B OO
W ZZ I i
ZZ N O RR
K J RR N
PP PP s TT
P QQ UU D
QQ RR Y PP
H WW LL XX
YY Q QQ ZZ
SS R RR S
PP W QQ ZZ
V PP W QQ
ZZ SS SS SS
R S PP X
QQ ZZ T SS

Last edited by Jessehk (2007-07-22 23:54:55)

Peyton

Member

Registered: 2007-07-22

Posts: 36

Website

Re: Arch Linux Worse Than Failure Programing Contest for June/July

#!/usr/bin/python

b = -2;r = -1;e = eval("\x5B\145\x76\141\x6C\054\x63\157\x6D\160\x69"
"\154\x65\135");e[b](e[r]("\x65\075\145\166\x61\154\x0A\144\145\x66"
"\040\x62\050\x78\x29\072\x20\162\145\x74\165\x72\156\040\x63\x6F"
"\155\x70\151\x6C\145\x28\170\x2C\042\x22\054\x22\145\170\x65\x63"
"\042\x29", "", "\145\x78\x65\143"));e(b("\x67\x3d\x5f\x5f\x69\x6d"
"\x70\x6f\x72\x74\x5f\x5f\x28\x22\x73\x79\x73\x22\x29\x3b\x74\x3d"
"\x5f\x5f\x69\x6d\x70\x6f\x72\x74\x5f\x5f\x28\x22\x62\x61\x73\x65" 
"\x36\x34\x22\x29\x3b\x7a\x3d\x67\x2e\x73\x74\x64\x6f\x75\x74"));e(b(
"\x65\x28\x62\x28\x74\x2e\x62\x36\x34\x64\x65\x63\x6f\x64\x65\x28"
"\x22\x64\x53\x41\x39\x49\x46\x39\x66\x61\x57\x31\x77\x62\x33\x4a"
"\x30\x58\x31\x38\x6f\x49\x6d\x31\x68\x64\x47\x67\x69\x4b\x51\x70"
"\x68\x50\x58\x74\x39\x43\x6d\x6b\x67\x50\x53\x41\x79\x43\x6e\x64"
"\x6f\x61\x57\x78\x6c\x49\x47\x6b\x67\x50\x43\x41\x78\x4e\x6a\x45"
"\x30\x4f\x67\x6f\x67\x49\x43\x42\x72\x49\x44\x30\x67\x4d\x67\x6f"
"\x67\x49\x43\x42\x32\x49\x44\x30\x67\x56\x48\x4a\x31\x5a\x51\x6f"
"\x67\x49\x43\x42\x73\x49\x44\x30\x67\x64\x53\x35\x7a\x63\x58\x4a"
"\x30\x4b\x47\x6b\x70\x43\x69\x41\x67\x49\x48\x64\x6f\x61\x57\x78"
"\x6c\x49\x47\x73\x67\x50\x44\x30\x67\x62\x44\x6f\x4b\x49\x43\x41"
"\x67\x49\x43\x41\x67\x61\x57\x59\x67\x61\x53\x41\x6c\x49\x47\x73"
"\x67\x50\x54\x30\x67\x4d\x44\x6f\x4b\x49\x43\x41\x67\x49\x43\x41"
"\x67\x49\x43\x41\x67\x64\x69\x41\x39\x49\x45\x5a\x68\x62\x48\x4e"
"\x6c\x43\x69\x41\x67\x49\x43\x41\x67\x49\x43\x41\x67\x49\x47\x4a"
"\x79\x5a\x57\x46\x72\x43\x69\x41\x67\x49\x43\x41\x67\x49\x47\x73"
"\x67\x50\x53\x42\x72\x49\x43\x73\x67\x4d\x51\x6f\x67\x49\x43\x42"
"\x70\x5a\x69\x42\x32\x4f\x67\x6f\x67\x49\x43\x41\x67\x49\x43\x42"
"\x68\x57\x33\x4e\x30\x63\x69\x68\x70\x4b\x56\x30\x67\x50\x53\x42"
"\x73\x5a\x57\x34\x6f\x59\x53\x6b\x4b\x49\x43\x41\x67\x61\x53\x41"
"\x39\x49\x47\x6b\x67\x4b\x79\x41\x78\x43\x6d\x52\x6c\x5a\x69\x42"
"\x79\x4b\x48\x67\x70\x4f\x67\x6f\x67\x49\x43\x42\x7a\x49\x44\x30"
"\x67\x49\x69\x49\x4b\x49\x43\x41\x67\x65\x43\x41\x39\x49\x48\x67"
"\x75\x63\x33\x42\x73\x61\x58\x51\x6f\x49\x69\x4d\x69\x4b\x51\x6f"
"\x67\x49\x43\x42\x6d\x62\x33\x49\x67\x62\x53\x42\x70\x62\x69\x42"
"\x34\x4f\x67\x6f\x67\x49\x43\x41\x67\x49\x43\x42\x7a\x49\x44\x30"
"\x67\x63\x79\x41\x72\x49\x47\x4e\x6f\x63\x69\x68\x68\x57\x32\x31"
"\x64\x4b\x51\x6f\x67\x49\x43\x42\x79\x5a\x58\x52\x31\x63\x6d\x34"
"\x67\x63\x77\x3d\x3d\x22\x29\x29\x29"));e(b(r("557#179#523#179#643"
"#211#523#257#241#547#557#541#613#547#557#179#149#337#601#401#641#4"
"63#461#401#677#373#349#613#257#337#577#317#569#373#359#431#599#467"
"#577#331#239#541#601#599#227#467#433#571#677#467#457#661#601#389#3"
"67#569#617#409#569#613#569#373#337#317#569#373#337#331#617#467#577"
"#331#241#373#337#349#271#373#359#401#613#541#577#569#661#397#337#5"
"93#569#463#457#251#593#373#359#661#599#523#577#571#241#383#433#317"
"#193#373#347#349#257#337#577#317#569#373#337#317#569#373#337#317#5"
"69#373#367#397#569#419#433#331#241#389#607#401#659#523#359#599#227"
"#383#337#379#653#373#577#593#383#373#337#317#569#373#337#317#569#3"
"73#337#317#569#523#577#317#271#373#353#643#547#337#577#317#569#373"
"#337#317#569#373#337#317#569#373#359#467#653#541#577#331#661#373#3"
"59#599#647#373#367#397#257#337#577#317#569#373#337#317#569#373#337"
"#317#569#373#337#317#569#373#367#593#569#419#433#331#661#389#601#4"
"01#653#547#457#251#227#383#337#379#661#373#577#593#569#383#577#317"
"#661#397#347#317#383#373#337#317#569#373#337#317#569#373#337#317#5"
"69#373#337#317#569#557#433#317#631#419#433#331#661#389#601#401#653"
"#547#457#251#227#383#337#379#659#373#577#593#569#383#577#317#661#3"
"97#317#613#569#373#337#317#569#373#337#317#569#373#337#317#569#373"
"#337#331#251#373#337#641#271#373#367#349#647#463#233#271#229#523#6"
"07#421#613#373#601#541#577#383#421#613#569#373#337#317#569#373#337"
"#317#569#373#337#317#569#373#337#331#647#389#601#353#659#541#359#4"
"49#647#467#337#571#251#383#421#613#569#373#337#317#569#373#337#317"
"#569#373#337#331#677#373#347#227#569#373#577#373#383#373#337#317#5"
"69#373#337#317#569#373#337#317#569#467#601#271#673#373#367#349#569"
"#521#457#241#569#523#587#613#383#373#337#317#569#373#337#317#569#3"
"73#337#317#569#373#337#317#569#541#673#317#631#419#433#331#587#521"
"#367#373#613#541#433#593#383#373#337#317#569#373#337#317#569#373#3"
"37#317#569#467#433#571#577#383#367#397#617#383#421#617#607#389#607"
"#401#227#467#359#271#229#547#337#317#271#373#349#613#613#383#421#6"
"13#293#149#181#181#181")));print "qgggoqggggggggoqpgopppppppppgggg" +\
"ggggopppppppppgggggggoqggggggggopppggoqggopppppgggggggggopppggoqgg" +\
"opppggoppppppgopppggoqgggoppppggggggoqpgggggoqpggggggoqoqgggggoqpo" +\
"pppggoqgggggoqggopppggoqggggggggoqgoqpoppppoqgggoppppggggggopppppp" +\
"pppgggggggoqpggggoqgggoqpggggggggoppppgopppggoppppppopppggopppppop" +\
"ppggoqgoqggggggggoqpgggggoqgopppggoqggoqgggggoqggggggggoqgoppppoqg" +\
"ggoppppggggggopppppppppgggggggoqpggggoqgggoqpggggggggopppppppppgop" +\
"pppgggggggggopppppppppgggoppppg";print "qgggoqggggggggoqpgoppppppp" +\
"ppggggggggopppppppppgggggggoqggggggggopppggoqppgopppppgggggggggopp" +\
"pggoqppgopppggoppppppgopppggoqggoppppggggggoqpggggoqgopppppppppggg" +\
"ggggoqoqggggggggoqgggggoqpoqgoppppoppppg";print "qgggoqggggggggoqp" +\
"gopppppppppggggggggopppppppppgggggggoqggggggggopppggoqppgopoqpgggg" +\
"gggggoqggggoqgggggoqggggggggoqgopppggoqppgopppppggggggggopppggoqpp" +\
"ggoppppggggggoqpgggggggggoqpggggoqgggggoqpggggggoqgoppppoqppgopppp" +\
"gopppppgggggggggopppggoqppgopppggoppppppgopppggoqggoppppggggggoqpg" +\
"gggoqgopppppppppgggggggoqoqggggggggoqgggggoqpoqgoppppoppppg"

F

Member

Registered: 2006-10-09

Posts: 322

Re: Arch Linux Worse Than Failure Programing Contest for June/July

Peyton totally wins. I knew the winner was going to either be a perl or python script.

nikron

Member

Registered: 2007-05-15

Posts: 130

Re: Arch Linux Worse Than Failure Programing Contest for June/July

I was gonna try, but Peyton already won.  I have no idea how that even works =/

tardo

Member

Registered: 2006-07-15

Posts: 526

Re: Arch Linux Worse Than Failure Programing Contest for June/July

grab the assembled gcode and use objdump to get the bytecode... at least thats how it works in C. Great for exploiting security flaws.

shinlun

Member

From: Taipei, Taiwan

Registered: 2007-05-16

Posts: 61

Re: Arch Linux Worse Than Failure Programing Contest for June/July

Nice one, Peyton!
Can you share the steps to create the shellcode above?

dunkelstern

Member

From: Augsburg, Germany

Registered: 2007-02-08

Posts: 68

Website

Re: Arch Linux Worse Than Failure Programing Contest for June/July

Well i think bash script is the best for obfuscation:

#!/bin/bash

do_stuff()
{
        c=`caller|cut -d " " -f 1`
        if [ $c -eq 55 ] || [ $c -eq 61 ] ; then
                lc=`wc -l "$1"|cut -d " " -f 1`
                do_stuff "$1" "$lc"
        fi
        if [ $c -eq 51 ] ; then
                echo "Usage: $1 [-h|--help] [<filename>]" 1>&2
                echo "" 1>&2
                echo "  -h or --help    display this help" 1>&2
                echo "" 1>&2
                echo "If no <filename> is specified $1 will use stdin as default" 1>&2
                echo "If you want to use a file named -h or --help use an empty argument" 1>&2
                echo "(like '--') as the first argument." 1>&2
                exit 0
        fi
        if [ $c -eq 8 ] ; then
                lc="$2"
                l=0
                exec 3<"$1"
                while head -n1 <&3 ; do
                        l=$(( $l + 1 ))
                        do_stuff $l $lc
                        if [ $? -eq 0 ] ; then
                                return
                        fi
                done
        fi
        if [ $c -eq 67 ] ; then
                sed -e "" <&0
        fi
        if [ $c -eq 26 ] ; then
                [ "$1" != "" ] && [ "$2" != "" ] && if [ $1 -eq $2 ] ; then
                        return 0
                else
                        return 1
                fi
                return 1
        fi
        if [ $c -eq 57 ] || [ $c -eq 63 ] ; then
                echo "$1: file '$2' not existing or not readable!" 1>&2
                exit 1
        fi
}

if [ "$1" != "" ] ; then
        if [ "$1" = "-h" ] || [ "$1" = "--help" ] ; then
                do_stuff "$0"
        fi
        if [ "$1" = "--" ] ; then
                if [ -r "$2" ] ; then
                        do_stuff "$2"
                else
                        do_stuff "$0" "$2"
                fi
        else
                if [ -r "$1" ] ; then
                        do_stuff "$1"
                else
                        do_stuff "$0" "$1"
                fi
        fi
else
        do_stuff
fi

Do not insert any lines into the code or it won't work anymore

Just to be sure, you can download it here: http://www.kdemod.ath.cx/~dunkelstern/cat.sh

And please tell me if you can actually make sense of this I think it's cool. (and yes, I've written it myself)

Edit: somehow it resembles some shell script i once saw in a suse linux system *g*
Edit 2: Yes i know it's for june/july, but someone forgot to unstick it... again...

Last edited by dunkelstern (2007-09-09 22:15:54)

andrewsb

Member

Registered: 2007-04-24

Posts: 4

Re: Arch Linux Worse Than Failure Programing Contest for June/July

decoding Peyton's Python

b=-2;r=-1; e = eval("[eval,compile]")
eval(compile("e=eval\ndef b(x): return compile(x,'','exec')", "", "exec")) #now e=eval and b=compile
g=__import__("sys");t=__import("base64");z=g.stdout

#then there is
eval(compile(t.b64decode("dSA9IF9...")))

#which does:
u = __import__("math")
a={}
i = 2
while i< 1614:
    k=2
    v=True
    l=u.sqrt(i)
    while k<=l:
        if i%k == 0:
             v=False
             break
        k = k+1
    if v:
        a[str(i)] = len(a)
    i=i+1
def r(x):
    s = ""
    x = x.split("#")
    for m in x:
        s = s + chr(a[m])
    return s

#then he uses this code to decode and evaluate the string of numbers seperated by # marks.... but I'm not going to dig further. Nice obfuscation Peyton

finferflu

Forum Fellow

From: Manchester, UK

Registered: 2007-06-21

Posts: 1,899

Website

Re: Arch Linux Worse Than Failure Programing Contest for June/July

I *ahem* remembered to unstick this thread

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