Quick introduction to Tarantool

2015-08-30T00:00:00Z

Quick introduction to Tarantool

Date: 30 Aug 2015
Tagged with: tarantool, FreeBSD

Let’s start to install tarantool on FreeBSD 10.X from ports tree.

Getting started

Access to console

Connection between tarantools

Change delimiter

Python3 asyncio driver

DTrace integration features

2013-09-29T00:00:00Z

DTrace integration features

Date: 29 Sep 2013
Tagged with: DTrace, tarantool, FreeBSD, Linux, Solaris, OSX, kernel, C, CMake

This post explores my troubles with integrating DTrace in projects. I spent a few days searching for and fixing bugs in DTrace. I’ll explain my troubles and approach to fixing bugs in tarantool, a no-sql DB, with common instruments.

This post isn’t yet complete. I’ll add new information after fix/found bugs.

Instruments to research:

OSs:

FreeBSD 9.1-RELEASE-p7
Darwin 12.5.0
Linux 3.8.13-16.el6uek.x86_64 (Oracle Linux)

Solaris based:

OpenIndiana 151a8 (so old compilers)
Oracle Linux 11.1 (so old compilers)
SmartOS latest (all stuff got coredump)

DTrace Versions:

dtrace: Sun D 1.7 (FreeBSD)
dtrace: Sun D 1.6.2 (Darwin)
dtrace: Sun D 1.6.3 (Oracle Linux)

Generate DTrace object twice

%> sudo dtrace -l -m tarantool_box
Password:
   ID   PROVIDER            MODULE                          FUNCTION NAME
dtrace: failed to match :tarantool_box::: No probe matches description

If you have a modular application you’ll try to generate many dtrace objects to link that with the application. You get static libraries and then link. This is a common approach to programming but if you use DTrace in more than one library you need run dtrace -G to get one dtrace object which include all providers.

After the first time you get a dtrace object with correct information but you would like to get object for all providers in different libs in one object. I’ll explain the main issue with second generation with an example.

This is an example with one library. You are able to do this on the command line for getting incorrect object because you did correct object before with information about one: ***

%> dtrace -G -s ../../include/dtrace.d ../CMakeFiles/cjson.dir/third_party/lua-cjson/lua_cjson.c.o -o cjson_dtrace_second.o

%> md5 cjson_dtrace.o
MD5 (cjson_dtrace.o) = 69cc9d1037f106e682464af05205458c
%> md5 cjson_dtrace_second.o
MD5 (cjson_dtrace_second.o) = a42c72ae540be068243936afe2d7b868

On above list you see mismatched md5 sums. When I found that I started fire to drill-down to object files and look at what’s incorrect.

I got 2 dtrace objects, Using the strings command I found the differences:

%> strings -a cjson_dtrace_second.o > dtrace_second
%> strings -a cjson_dtrace.o > dtrace

%> diff -up dtrace dtrace_second

I saw removed functions with dtrace defines for a trace.

--- dtrace  2013-09-27 13:47:17.839671510 +0000
+++ dtrace_second   2013-09-27 13:47:08.717669720 +0000
@@ -117,15 +117,10 @@ vfprintf
 encode-done
 char *
 char *
-json_encode
-$dtrace140912.json_encode
 encode-start
 char *
 char *
-json_encode
-$dtrace140912.json_encode
 new-entry
-luaopen_cjson
 tick-start
 tick-stop
 tarantool

In the next stage I looked inside .SUNW_dof in section of dtrace object file.

%> objdump -s -j .SUNW_dof cjson_dtrace.o

This is correct hex output from dtrace object:

cjson_dtrace.o:     file format elf64-x86-64-freebsd

Contents of section .SUNW_dof:
 0270 00000000 00000000 00000000 05000000  ................
 0280 01000000 00656e63 6f64652d 646f6e65  .....encode-done
 0290 00696e74 00636861 72202a00 696e7400  .int.char *.int.
 02a0 63686172 202a006a 736f6e5f 656e636f  char *.json_enco
 02b0 64650024 64747261 63653134 30393132  de.$dtrace140912
 02c0 2e6a736f 6e5f656e 636f6465 00656e63  .json_encode.enc
 02d0 6f64652d 73746172 7400696e 74006368  ode-start.int.ch
 02e0 6172202a 00696e74 00636861 72202a00  ar *.int.char *.
 02f0 6a736f6e 5f656e63 6f646500 24647472  json_encode.$dtr
 0300 61636531 34303931 322e6a73 6f6e5f65  ace140912.json_e
 0310 6e636f64 65006e65 772d656e 74727900  ncode.new-entry.
 0320 6c75616f 70656e5f 636a736f 6e007469  luaopen_cjson.ti
 0330 636b2d73 74617274 00696e74 00696e74  ck-start.int.int
 0340 00746963 6b2d7374 6f700069 6e740069  .tick-stop.int.i
 0350 6e740074 6172616e 746f6f6c 00000000  nt.tarantool....
 0360 53756e20 4420312e 37004672 65654253  Sun D 1.7.FreeBS
 0370 44000000 00000000 00000000 00000000  D...............
 0380 00000000 00000000 00000000 00000000  ................

Drill-down to next incorrect object:

%> objdump -s -j .SUNW_dof cjson_dtrace_second.o

In .SUNW_dof sect I saw empty dtrace providers for tracing function:

cjson_dtrace_second.o:     file format elf64-x86-64-freebsd

Contents of section .SUNW_dof:
 0190 00000000 00000000 00000000 05000000  ................
 01a0 01000000 00656e63 6f64652d 646f6e65  .....encode-done
 01b0 00696e74 00636861 72202a00 696e7400  .int.char *.int.
 01c0 63686172 202a0065 6e636f64 652d7374  char *.encode-st
 01d0 61727400 696e7400 63686172 202a0069  art.int.char *.i
 01e0 6e740063 68617220 2a006e65 772d656e  nt.char *.new-en
 01f0 74727900 7469636b 2d737461 72740069  try.tick-start.i
 0200 6e740069 6e740074 69636b2d 73746f70  nt.int.tick-stop
 0210 00696e74 00696e74 00746172 616e746f  .int.int.taranto
 0220 6f6c0000 00000000 53756e20 4420312e  ol......Sun D 1.
 0230 37004672 65654253 44000000 00000000  7.FreeBSD.......
 0240 00000000 00000000 00000000 00000000  ................

The next step is finding differences in library objects. After running dtrace -G twice I get these changes in main library objects:

%> md5 lua_cjson.c.o
MD5 (lua_cjson.c.o) = bdc0afbb0869f7bee70c29a7ba538127
%> md5 lua_cjson.c.o.dtrace
MD5 (lua_cjson.c.o.dtrace) = 0d65212c87350dceb64f71429b72ce3b

I looked at the .text section of the object file in objdump because this section contains the executible code.

%> objdump -d -j .text lua_cjson.c.o.dtrace > dtrace
%> objdump -d -j .text lua_cjson.c.o > non-dtrace



  
    
      
    
    
      copyright © 2013 Veniamin Gvozdikov



Installing a FusionInventory to FreeBSD
2011-02-18T00:00:00Z

    
  
    Installing a FusionInventory to FreeBSD
    
      Date: 18 Feb 2011
      
      Tagged with: FusionInventory, FreeBSD, Nginx, ports, PHP
    
  
  Hi everybody!
This is simple how to install fusioninventory to FreeBSD. I missed steps with install a DB.
I have:
% uname -sr
FreeBSD 8.1-RELEASE

I like ports tree :) We will install glpi and plugin from a ports tree 
$portmaster www/nginx www/glpi
$echo nginx_enable=\"YES\">>/etc/rc.conf
$echo php_fpm_enable=\"YES\">>/etc/rc.conf

You are can get a port
And then try a few steps :-P
$sh shar-1.sh
$make -C glpi-plugins-fusioninventory-server/ install clean

This is my configuration file for a nginx virtual host with glpi
server {
    listen       80;
    server_name  glpi;
    #    charset utf-8;
    #access_log  logs/host.access.log  main;
    access_log /var/log/nginx.glpi.log;
    error_log /var/log/nginx.error.glpi.log;
    location / {
        root   /usr/local/www/glpi;
        index  index.php index.html index.htm;
    }
    #error_page  404              /404.html;
    # redirect server error pages to the static page /50x.html
    #
    error_page   500 502 503 504  /50x.html;
    location = /50x.html {
        root   /usr/local/www/nginx-dist;
    }
    location ~* \.php$ {
        fastcgi_pass 127.0.0.1:9000;
        fastcgi_index index.php;
        fastcgi_param SCRIPT_FILENAME /usr/local/www/glpi$fastcgi_script_name;
        include fastcgi_params;
    }
}

Now need create a log files and then start services….
$touch /var/log/nginx.glpi.log
$touch /var/log/nginx.error.glpi.log
$/usr/local/etc/rc.d/php-fpm start
$/usr/local/etc/rc.d/nginx start

Done. go to your glpi and activate plugin.


Nginx with Perl and OTRS
2011-02-18T00:00:00Z

    
  
    Nginx with Perl and OTRS
    
      Date: 18 Feb 2011
      
      Tagged with: OTRS, Nginx, Perl
    
  
  Hi everybody!
I like nginx. It’s a fast web server! But I need using otrs, without apache and mod_perl. This is my configs for it:
You can install otrs from freebsd ports tree and then use my configs with perl wrapper :)
$portmaster -d devel/otrs www/nginx www/p5-FastCGI

nginx.conf

server {
    listen 80;
    server_name localhost;
    root /usr/local/otrs/var/httpd/htdocs;
    access_log  /var/log/nginx/otrs.nginx_access.log;
    index index.html;
    location /otrs-web {
        gzip on;
        alias /usr/local/otrs/var/httpd/htdocs;
    }
    location ~ ^/otrs/(.*\.pl)(/.*)?$ {
        gzip off; #gzip makes scripts feel slower since they have to complete before getting gzipped
        #    fastcgi_pass  unix:/..sock;
        fastcgi_pass unix:/var/run/perl-fcgi.sock;
        #    fastcgi_pass  127.0.0.1:8999;
        fastcgi_index index.pl;
        fastcgi_param SCRIPT_FILENAME   /usr/local/otrs/bin/fcgi-bin/;
        fastcgi_param QUERY_STRING      $query_string;
        fastcgi_param REQUEST_METHOD    $request_method;
        fastcgi_param CONTENT_TYPE      $content_type;
        fastcgi_param CONTENT_LENGTH    $content_length;
        fastcgi_param GATEWAY_INTERFACE CGI/1.1;
        fastcgi_param SERVER_SOFTWARE   nginx;
        fastcgi_param SCRIPT_NAME       $fastcgi_script_name;
        fastcgi_param REQUEST_URI       $request_uri;
        fastcgi_param DOCUMENT_URI      $document_uri;
        fastcgi_param DOCUMENT_ROOT     $document_root;
        fastcgi_param SERVER_PROTOCOL   $server_protocol;
        fastcgi_param REMOTE_ADDR       $remote_addr;
        fastcgi_param REMOTE_PORT       $remote_port;
        fastcgi_param SERVER_ADDR       $server_addr;
        fastcgi_param SERVER_PORT       $server_port;
        fastcgi_param SERVER_NAME       $server_name;
    }
}

And you need a wrapper for use perl :) You can get it from:
copy fcgi-wrapper  to /usr/local/sbin
copy perl-fcgi to /usr/local/sbin
And rc.d script
perl-fcgi.rc to /usr/local/etc/rc.d/perl-fcgi
then add
$echo perl_fcgi_enable=\"YES\" >>/etc/rc.conf

Thanks tech notes


Upload a file from shell to file sharing hosting
2011-01-29T00:00:00Z

    
  
    Upload a file from shell to file sharing hosting
    
      Date: 29 Jan 2011
      
      Tagged with: zalil, upload, script, shell
    
  
  I often sharing my files with use a file hosting. :) But I don’t like use a browser for it. Now I’ve wrote the function for my .zshrc.
function zalil(){
    if [ -n "" -a -f "" ];then
        if  [ "
  


  
    
      
    
    
      copyright © 2013 Veniamin Gvozdikov
    
  



Pastebin in the ZSH
2011-01-24T00:00:00Z

    
  
    Pastebin in the ZSH
    
      Date: 24 Jan 2011
      
      Tagged with: Pastebin, ZSH, sript, sheel
    
  
  I’ve wrote the pastebin function which I do use at the my .zshrc.
function pastebin(){
    fload(){
        TFILE=
  


  
    
      
    
    
      copyright © 2013 Veniamin Gvozdikov
    
  



The JunOS installation script
2011-01-08T00:00:00Z

    
  
    The JunOS installation script
    
      Date: 08 Jan 2011
      
      Tagged with: JunOS, Juniper, FreeBSD, shell, script
    
  
  I don’t like installing manually… So I’ve written a script for it. This is an autoamtic installation script for the JunOS olive for which you need to be using a version of FreeBSD < 8.  FreeBSD 8 is not supported.
#!/bin/sh
FILE='jinstall-10.4R1.9-domestic-signed.tgz'
HASH=649006003c9773859882411246405a39
UNTAR='tar zxf'
TAR='tar zcf'
WORK=tmp

work (){
    if [ -d $WORK ]; then
        rm -fr $WORK
    fi
    mkdir -p $WORK
    cd $WORK
}

dwork (){
    cd ../;rm -fr $WORK
}
if [ 
  


  
    
      
    
    
      copyright © 2013 Veniamin Gvozdikov
    
  



Установка junos 10 на PC
2010-07-03T00:00:00Z

    
  
    Установка junos 10 на PC
    
      Date: 03 Jul 2010
      
      Tagged with: JunOS, Juniper, FreeBSD, diff, patch, boot, kernel, sysctl
    
  
  Устанавливал JunOS я непосредственно в 7.3-RELEASE-i386-bootonly.iso.
Первое на что нужно обратить внимание, так это на разделение slice на partition. Если не создавать partition /tmp, то возникает ошибка об нехватке свободного места на носителе md1, который в свою очередь имеет объём 160Mb.
Нужно установить минимальную версию FreeBSD на носитель, и приступить к созданию модифицированного пакета.
$cd /var/tmp
Кладем package сюда удобным для вас способом.... И приступаем к модификации.
$mkdir blah;cd blah;tar zxvf ../jinstall-10.1R1.8-domestic-signed.tgz
$mkdir blah;cd blah;tar zxvf ../jinstall-10.1R1.8-domestic.tgz

$mkdir blah;cd blah;tar zxvf ../pkgtools.tgz
$cp -v /usr/bin/true bin/checkpic

$tar zcvf ../pkgtools.tgz *
$cd ../;rm -rf blah
$tar zcfv /var/tmp/jinstall-10.1R1.8-domestic.tgz *
Устанавливаем:
$pkg_add -f jinstall-10.1R1.8-domestic.tgz
$echo console=\"vidconsole\">>/boot/loader.conf;reboot

Ожидаем окончания установки и радуемся:
root@%cli
root>show version
Model: olive
JUNOS Base OS boot [10.1R1.8]
JUNOS Base OS Software Suite [10.1R1.8]
JUNOS Kernel Software Suite [10.1R1.8]
JUNOS Crypto Software Suite [10.1R1.8]
JUNOS Packet Forwarding Engine Support (M/T Common) [10.1R1.8]
JUNOS Packet Forwarding Engine Support (M20/M40) [10.1R1.8]
JUNOS Online Documentation [10.1R1.8]
JUNOS Voice Services Container package [10.1R1.8]
JUNOS Border Gateway Function package [10.1R1.8]
JUNOS Services AACL Container package [10.1R1.8]
JUNOS Services LL-PDF Container package [10.1R1.8]
JUNOS Services Stateful Firewall [10.1R1.8]
JUNOS AppId Services [10.1R1.8]
JUNOS IDP Services [10.1R1.8]
JUNOS Routing Software Suite [10.1R1.8]

PS:

В internet полно трактатов по установке olive на PC, но там старые версии, и для них не нужно создавать partition /tmp в slice.
HDD обязательно должен иметь имя ad0[s]X, либо нужно делать symlinks.
Минимальный объём оперативной памяти 512M, но потом можно вставить HDD после установки в другой системный блок. Я использую junos на 256M, но заметны проблемы при запуске cli и других команд.



Kaspersky Rescue 10 PXE
2010-05-27T00:00:00Z

    
  
    Kaspersky Rescue 10 PXE
    
      Date: 27 May 2010
      
      Tagged with: PXE, Kaspersky, rescue, boot, antivirus
    
  
  Depends on squashfs-tools > 3!
Patch patch-PXE-kavrescue10.iso.patch
--- sbin/dmsquash-live-root.orig    2014-01-05 21:26:33.581580759 +0400
+++ sbin/dmsquash-live-root 2014-01-06 21:42:30.159646123 +0400
@@ -46,9 +46,7 @@ fi
 
 # determine filesystem type for a filesystem image
 det_img_fs() {
-    local _img="" _loop=$(losetup -f) _fs
-    losetup $_loop $_img; _fs=$(det_fs $_loop); losetup -d $_loop
-    echo $_fs
+    echo squashfs
 }
 
 for arg in $CMDLINE; do case $arg in ro|rw) liverw=$arg ;; esac; done
@@ -62,7 +60,6 @@ if [ -f $livedev ]; then
         auto) die "cannot mount live image (unknown filesystem type)" ;;
         *) FSIMG=$livedev ;;
     esac
-else
     mount -n -t $fstype -o ${liverw:-ro} $livedev /run/initramfs/live
     if [ "$?" != "0" ]; then
         die "Failed to mount block device of live image"
--- init.orig   2014-01-05 21:26:33.571246205 +0400
+++ init    2014-01-06 19:55:26.324595021 +0400
@@ -288,7 +288,7 @@ unset main_loop
 unset RDRETRY
 
 if  ! ismounted "/run/initramfs/live"; then
-    CDROM_DEVICES="/dev/sr*"
+    CDROM_DEVICES="/image.squashfs"
     for i in $CDROM_DEVICES
     do
         /sbin/dmsquash-live-root $i


Build instructions:
$mdconfig -f kav_rescue_10.iso
$mountcd_9660 /dev/md0 /cdrom
$cp -v /cdrom/boot/rescue .
$mkdir image && cd image
$lzcat -S lz /cdrom/boot/rescue.igz | cpio -id
$patch -p0<../../patch-PXE-kav_rescue_10.iso.patch
$mkdir cdrom && cp -R /cdrom/rescue cdrom/
$mksquashfs cdrom image.squashfs && rm -fr cdrom
$find . -print | cpio -o -H newc | lzma -c > /usr/local/tftp/rescue.igz && cd ../ && rm -fr image/

Example config pxe:
label kav
kernel /rescue
append initrd=/rescue.igz root=live rootfstype=auto vga=791 init=/init kav_lang=ru udev liveimg doscsi nomodeset

label kav_text
kernel /rescue
append initrd=/rescue.igz root=live rootfstype=auto vga=791 init=/init kav_lang=ru udev liveimg nox kavshell noresume doscsi nomodeset


Files: kernel and initrd.
DEPRECATED
Patch patch-PXEkavrescue_2010.iso.patch
--- init.orig   2010-05-24 21:40:35.000000000 +0800
+++ init    2010-05-25 16:07:38.000000000 +0800
@@ -399,7 +399,7 @@ fi
 
 # Determine root device
 good_msg 'Determining root device...'
-while true
+while false
 do
    while [ "${got_good_root}" != '1' ]
    do
@@ -462,6 +462,8 @@ do
        fi
    done
 
+REAL_ROOT=/image.squashfs
+REAL_ROOT_TYPE=squashfs
 
    if [ "${CDROOT}" = 1 -a "${got_good_root}" = '1' -a "${REAL_ROOT}" != "/dev/nfs" ]
    then
@@ -521,7 +523,6 @@ then
    [ -z "${LOOP}" ] && find_loop
    [ -z "${LOOPTYPE}" ] && find_looptype
 
-   cache_cd_contents
 
    # If encrypted, find key and mount, otherwise mount as usual
    if [ -n "${CRYPT_ROOT}" ]
@@ -557,7 +558,8 @@ then
        elif [ "${LOOPTYPE}" = 'squashfs' ]
        then
            good_msg 'Mounting squashfs filesystem'
-           mount -t squashfs -o loop,ro "${NEW_ROOT}/mnt/cdrom/${LOOPEXT}${LOOP}" "${NEW_ROOT}/mnt/livecd"
+           mount -t squashfs -o loop,ro /${LOOP} ${NEW_ROOT}/mnt/livecd
+           mount -t squashfs -o loop,rw /cdrom.squashfs ${NEW_ROOT}/mnt/cdrom
            test_success 'Mount filesystem'
            FS_LOCATION='mnt/livecd'
        elif [ "${LOOPTYPE}" = 'gcloop' ]


Build instructions:
# Downloading files....
$wget -c http://devbuilds.kaspersky-labs.com/devbuilds/RescueDisk10/kavrescue10.iso
# Installing needed stuff
$sudo make -C /usr/ports/archivers/gcpio install clean
$sudo make -C /usr/ports/sysutils/squashfs-tools install clean
# Building image
$mdconfig -f kavrescue10.iso
$mountcd_9660 /dev/md0 /cdrom
$cp -v /cdrom/boot/rescue ./
$mkdir image && cd image
$zcat /cdrom/boot/rescue.igz |gcpio -id
$patch -p0 < ../patch-PXE_kav_rescue_2010.iso.patch
$mkdir cdrom && cp -R /cdrom/rescue cdrom/
$mksquashfs cdrom cdrom.squashfs && rm -fr cdrom
$sudo cp /cdrom/image.squashfs ./
$sudo chmod 644 image.squashfs
$find . -print | gcpio -o -H newc > ../rescue.igz && cd ../ && rm -fr image/

Example config pxe:
label KAV10 rescue RUS
kernel data/antivir/kav10/rescue
append initrd=data/antivir/kav10/rescue.igz root=/dev/ram0 cdroot=1 kavlang=ru loop=image.squashfs looptype=squashfs realroot=/

label KAV10 rescue ENG
kernel data/antivir/kav10/rescue
append initrd=data/antivir/kav10/rescue.igz root=/dav/ram0 cdroot=1 kavlang=en loop=image.squashfs looptype=squashfs realroot=/

label KAV10 rescue text mode
kernel data/antivir/kav10/rescue
append initrd=data/antivir/kav10/rescue.igz root=/dev/ram0 cdroot=1 kavlang=en loop=image.squashfs looptype=squashfs real_root=/ nox kavshell


Downloadable bits
Download patch-PXE-kav_rescue_10.iso.patch
Download patch-PXE_kav_rescue_2010.iso.patch
Download pxeboot_kav_rescue_10.cfg
Download pxeboot_kavrescue10.cfg


Kaspersky update server
2010-05-27T00:00:00Z

    
  
    Kaspersky update server
    
      Date: 27 May 2010
      
      Tagged with: Kaspersky, update, retranslator, FreeBSD, ports, Nginx
    
  
  Устанавливаем порт retranslator:
$sudo make -C /usr/ports/security/retranslator install clean (Пока только PR 147116)

В файле /usr/local/etc/retranslator.conf указываем пути для хранения баз, и продукты для которых нужно получать обновления. Дополнительную информацию можно получить тут.
[path]
RetranslationPath=/path/to/kav.local/bases
TempPath=/tmp

[locale]
DateFormat=%d-%m-%Y
TimeFormat=%H:%M:%S

[updater.path]
BackUpPath=/path/to/kav.local/backup
PidFile=/var/run/kav-retranslator.pid

[updater.options]
RetranslateComponentsList=KDB, KDBI386, CORE, ARK, BSS, ADBU, ADB, AH, AH2I386, AH2X64, APU, AP, AS, BB, BB2, BLST, BLST2, KAV9EXEC, KAV8EXEC, INFO, RT, WMUF, WA, WAVI386, VLNS, EMU, PAS4, PAS, PARCTL, SSA, ASTRM, HIPS, HIPS2, KSN, QSCAN, UPDATER

Index=u0607g.xml
IndexRelativeServerPath=index
UseUpdateServerUrl=no
UseUpdateServerUrlOnly=no
UpdateServerUrl=
RegionSettings=ru
ConnectTimeout=20
KeepSilent=no
UseProxy=no
ProxyAddress=
PassiveFtp=no
PostRetranslateCmd=

[updater.report]
Append=no
ReportFileName=/var/log/retranslator.log
ReportLevel=0

Добавляем строку с заданием в cron для обновления каждые полчаса:
1,31 * * * * root /usr/local/bin/retranslator -q -c /usr/local/etc/retranslator.conf

Часть конфига для nginx:
server {
    listen 80;
    servername kav.local;

    accesslog /var/log/webserver/kav.local_access.log;

    location / {
        root /path/to/www/kav.local/bases;
        autoindex on;
    }
}

VG's blog

Quick introduction to Tarantool

DTrace integration features

Instruments to research:

Generate DTrace object twice

Installing a FusionInventory to FreeBSD

Nginx with Perl and OTRS

Upload a file from shell to file sharing hosting

Pastebin in the ZSH

The JunOS installation script

Установка junos 10 на PC

Kaspersky Rescue 10 PXE

Downloadable bits

Kaspersky update server