Showing posts with label unix. Show all posts
Showing posts with label unix. Show all posts

monitoring squid with squidclient

Yesterday got confused how to see the hit ratio of byts new squid I install, will install mrtg cachti or males for a little kompnya jadul fitted with barely enough memory, especially if you install mrtg and cacti have to install a webserver and cgi.

But the results of the streets and searching on google I finally know there is a small and lightweight tools to see permformance squid. Without the hassle to install mrtg and cachti.

In squid that I use ubuntu machine running on the server. And the solution to see the performance and saw squid byts hit ratio was fairly easy. With SQUIDCLIENT, so the solution is to install the machine squidclient that we use.

apt-get install squidclient

wait until the installation is complete

and how to use it fairly easily in my squid as I type below, although there are many comments and orders of this squidclient I do not know

root @ ubuntu: ~ # squidclient 192.168.88.1-p 9988 mgr: info

the result as below

HTTP/1.0 200 OK
Date: Wed, 01 Jul 2009 12:59:49 GMT
Content-Type: text / plain
Expires: Wed, 01 Jul 2009 12:59:49 GMT
X-Cache: MISS from ProxyIP.net
X-Cache-Lookup: MISS from ProxyIP.net: 9988
Connection: close

Squid Object Cache: Version 2.7.STABLE3
Start Time: Wed, 01 Jul 2009 12:56:40 GMT
Current Time: Wed, 01 Jul 2009 12:59:49 GMT
Connection information for squid:
Number of clients accessing cache: 9
Number of HTTP requests received: 61
Number of ICP messages received: 0
Number of ICP messages sent: 0
Number of queued ICP replies: 0
Number of HTCP messages received: 0
Number of HTCP messages sent: 0
Request failure ratio: 0.00
Average HTTP requests per minute since start: 19.4
Average ICP messages per minute since start: 0.0
Select loop called: 13,795 times, 13,697 ms avg
Cache information for squid:
Request Hit Ratios: 5min: 38.5%, 60min: 38.5%
Byte Hit Ratios: 5min: 55.1%, 60min: 55.1%
Request Memory Hit Ratios: 5min: 0.0%, 60min: 0.0%
Request Disk Hit Ratios: 5min: 40.0%, 60min: 40.0%
Storage Swap size: 9215996 KB
Storage Mem size: 612 KB
Mean Object Size: 15.94 KB
Requests given to unlinkd: 19
Median Service Times (seconds) 5 min 60 min:
HTTP Requests (All): 0.80651 0.80651
Cache Misses: 0.80651 0.80651
Cache Hits: 0.03241 0.03241
Near Hits: 1.00114 1.00114
Not-Modified Replies: 0.00000 0.00000
DNS lookups: 0.00203 0.00203
ICP Queries: 0.00000 0.00000
Resource usage for squid:
UP Time: 188,953 seconds
CPU Time: 6310 seconds
CPU Usage: 3:34%
CPU Usage, 5 minute avg: 3:49%
CPU Usage, 60 minute avg: 3:49%
Process Data Segment Size via sbrk (): 57,604 KB
Maximum Resident Size: 0 KB
Page faults with physical i / O: 2
Memory usage for squid via mallinfo ():
Total space in arena: 57,604 KB
Ordinary blocks: 57527 KB 5 blks
Small blocks: 0 KB 0 blks
Holding blocks: 672 KB 3 blks
Free Small blocks: 0 KB
Free Ordinary blocks: 76 KB
Total in use: 58,199 KB 100%
Total free: 76 KB 0%
Total size: 58,276 KB
Memory accounted for:
Total accounted: 43775 KB
memPoolAlloc calls: 2914245
memPoolFree calls: 1178428
File descriptor usage for squid:
Maximum number of file descriptors: 1024
Largest file desc currently in use: 55
Number of file desc currently in use: 52
Files queued for open: 0
Available number of file descriptors: 972
Reserved number of file descriptors: 100
Store Disk files open: 1
IO loop method: epoll
Internal Data Structures:
578,152 StoreEntries
43 StoreEntries with MemObjects



root @ ubuntu: ~ # squidclient-p 9988-u USERNAME-w 'secretePassword' mgr: info | grep 'files descri'

Result:


Maximum number of file descriptors: 1024
Available number of file descriptors: 858
Reserved number of file descriptors: 100


---------------------
Other commands:

squidclient mgr: info | grep 'files descri'
squidclient mgr: info | grep 'files descri'
squidclient-h host-p 80 mgr: utilization
squidclient-h host-p 80 mgr: 5min
squidclient-h host-p 80 mgr: 60min


Setting Up FTP server on FreeBsd or Linux

The original of this article you can find here.

The FTP service is simple to use and administer, which is why it is a good idea to begin with this step when configuring an Internet server. Chances are that your Linux installation already contains a functioning copy of an FTP server. The main steps of setting up an FTP server are as follows:

  • Installing the software
  • Configuring the Internet superserver
  • Configuring the FTP directories
  • Managing the server

    Server Installation

    FTP servers usually come in the form of a single executable program, one that goes by names such as ftpd, in.ftpd, or something similar. It is typically located in the /sbin or /usr/sbin directory. On my test system, the FTP server was one of the components installed during the initial system setup. Caldera OpenLinux comes with one of the most commonly used FTP servers, developed at the University of Washington. This server's executable file is named in.ftpd and it is located in /usr/sbin/. Once installed, the FTP server provides access to files by users who have an account on your system. These users will be able to access the same files that they normally have access to, for instance when they log on to the system interactively. In other words, if you log on to a remote system via FTP using your username and password on that system, you'll be able to access files in your home directory for reading and writing. You might also be able to read (download) other files that you normally have read access to on that system.

    Configuring the Internet Superserver

    Placing the FTP server executable on your computer is not sufficient by itself to provide FTP access. For this, you must also ensure that the FTP server is invoked when an incoming request arrives. Such incoming requests come in the form of connections to TCP port 21, the port reserved for FTP access. The standard method for invoking a server is through inetd, the Internet superserver. This server is configured through the file /etc/inetd.conf. On my test system, the Caldera OpenLinux installer placed the following entry in /etc/inetd.conf:

    ftp stream tcp nowait root /usr/sbin/tcpd in.ftpd -l -a

    The two command-line switches used install the server to log entries to the system log ( -l) and to use the ftpaccess file. This file is optional; if it exists, the FTP server uses it to establish configuration options. For more information, read the manual page ( man ftpaccess .)

    Configuring Anonymous Access

    When a regular user logs on to the system via FTP, all the access privileges that normally apply to this user ID remain in effect throughout the FTP session. The user can retrieve any file or execute arbitrary commands on the system. In contrast, anonymous users cannot be allowed such a privilege. Unlike regular users who are trusted (why else would they have a password on your system?), anonymous users could turn out to be hostile intruders. As a result, their access must be limited to the downloading of publicly accessible files and optionally uploading files to public directories. In order for an FTP server to provide anonymous access, it is necessary to have a user account named ftp on your system. This user account is never used for interactive login, and does not require a valid password. However, when an anonymous FTP user connects to your system, the FTP server will use this account's access permissions for accessing files. Furthermore, anonymous users only see files that are located in the home directory associated with the ftp user ID. In addition to files anonymous users can download, this directory also contains special versions of commands such as ls, and a special copy of the etc directory. During an anonymous session, the FTP server uses the ftp home directory as its root directory; in other words, it can only see these copies of executable commands and files from /etc, not the originals. This prevents an anonymous user from accessing the real version of /etc/passwd (conceivably obtaining a copy of all your encrypted passwords if you're not using the shadow password suite; see Chapter 4, for more information) or executing other commands and exploiting them for security leaks. Most Linux distributions establish the ftp user ID and create its home directory during initial system installation. My test system is no exception: The ftp user ID and home directory were created by the Caldera OpenLinux installer. The file /etc/passwd contains the following entry:

    ftp:x:14:50:FTP User:/home/ftp:

    In /home/ftp, I found the following files and directories:

    /home/ftp/bin/
    /home/ftp/bin/gzip
    /home/ftp/bin/ls
    /home/ftp/bin/tar
    /home/ftp/bin/zcat -> gzip
    /home/ftp/etc/
    /home/ftp/etc/group
    /home/ftp/etc/passwd
    /home/ftp/pub/


    The presence of the tar and gzip utilities allows the FTP server to provide the contents of an entire directory in a single transaction. With the tar command the files are combined into an archive, and then optionally compressed using gzip. These commands are explained in detail in Chapter 17, "Backups." As you can see, the pub directory is currently empty. Usually, files that can be downloaded by anyone are placed in this directory.

    FTP Server Management

    Once your FTP server is up and running, it requires very little attention. However, you may still want to monitor it from time to time to ensure proper operation and prevent abuse attempts. The principal means of monitoring server activity is through the transfer log file. This file, usually /var/log/xferlog, contains an entry for each successfully completed file transfer. The server also logs important messages to the standard system log. On most systems, these entries will end up in /var/log/messages.
  • Tips and tric on freebsd

    Here are some tips for freebsd users..

    Having trouble using fetch through a firewall? Try setting the environment
    variable FTP_PASSIVE_MODE to yes, and see fetch(3) for more details.
    %
    By pressing “Scroll Lock” you can use the arrow keys to scroll backward
    through the console output. Press “Scroll Lock” again to turn it off.
    %
    Want colour in your directory listings? Use “ls -G”. “ls -F” is also useful,
    and they can be combined as “ls -FG”.
    %
    If you need to ask a question on the FreeBSD-questions mailing list then

    http://www.freebsd.org/doc/en_US.ISO8859-1/articles/
    freebsd-questions/index.html

    contains lots of useful advice to help you get the best results.
    %
    If you’d like to keep track of applications in the FreeBSD ports tree, take a
    look at FreshPorts;

    http://www.freshports.org/
    %
    To search for files that match a particular name, use find(1); for example

    find / -name “*GENERIC*” -ls

    will search ‘/’, and all subdirectories, for files with ‘GENERIC’ in the name.
    – Stephen Hilton
    %
    In tcsh, you can `set autolist’ to have the shell automatically show
    all the possible matches when doing filename/directory expansion.
    %
    You can `set autologout = 30′ to have tcsh log you off automatically
    if you leave the shell idle for more than 30 minutes.
    %
    If you `set filec’ (file completion) in tcsh and write a part of the
    filename, pressing TAB will show you the available choices when there
    is more than one, or complete the filename if there’s only one match.
    %
    You can press up-arrow or down-arrow to walk through a list of
    previous commands in tcsh.
    %
    You can disable tcsh’s terminal beep if you `set nobeep’.
    %
    If you `set watch = (0 any any)’ in tcsh, you will be notified when
    someone logs in or out of your system.

    %
    Nice tcsh prompt: set prompt = ‘%m %# ‘
    %
    Nice tcsh prompt: set prompt = ‘%n@%m%# ‘
    %
    Nice tcsh prompt: set prompt = ‘%n@%m:%~%# ‘
    %
    Nice tcsh prompt: set prompt = ‘%n@%m:%/%# ‘
    %
    Nice tcsh prompt: set prompt = ‘[%B%m%b] %B%~%b%# ‘
    %
    Simple tcsh prompt: set prompt = ‘%# ‘
    %
    If you want df(1) and other commands to display disk sizes in
    kilobytes instead of 512-byte blocks, set BLOCKSIZE in your
    environment to ‘K’. You can also use ‘M’ for Megabytes or ‘G’ for
    Gigabytes. If you want df(1) to automatically select the best size
    then use ‘df -h’.
    %
    To change an environment variable in tcsh you use: setenv NAME “value”
    where NAME is the name of the variable and “value” its new value.
    %
    To change an environment variable in /bin/sh use:

    $ VARIABLE=”value”
    $ export VARIABLE
    %
    You can use /etc/make.conf to control the options used to compile software
    on this system. Example entries are in
    /usr/share/examples/etc/defaults/make.conf.
    %
    To do a fast search for a file, try

    locate filename

    locate uses a database that is updated every Saturday (assuming your computer
    is running FreeBSD at the time) to quickly find files based on name only.
    %
    In order to search for a string in some files, use ‘grep’ like this:

    grep “string” filename1 [filename2 filename3 ...]

    This will print out the lines in the files that contain the string. grep can
    also do a lot more advanced searches - type ‘man grep’ for details.
    %
    You can use the ‘fetch’ command to retrieve files over ftp or http.

    fetch http://www.freebsd.org/index.html

    will download the front page of the FreeBSD web site.
    %
    In order to make fetch (the FreeBSD downloading tool) ask for
    username/password when it encounters a password-protected web page, you can set
    the environment variable HTTP_AUTH to ‘basic:*’.
    %
    You can permanently set environment variables for your shell by putting them
    in a startup file for the shell. The name of the startup file varies
    depending on the shell - csh and tcsh uses .login, bash, sh, ksh and zsh use
    .profile. When using bash, sh, ksh or zsh, don’t forget to export the
    variable.
    %
    If you are running xterm, the default TERM variable will be ‘xterm’. If you
    set this environment variable to ‘xterm-color’ instead, a lot of programs will
    use colors. You can do this by

    TERM=xterm-color; export TERM

    in Bourne-derived shells, and

    setenv TERM xterm-color

    in csh-derived shells.
    %
    If you do not want to get beeps in X11 (X Windows), you can turn them off with

    xset b off
    %
    You can look through a file in a nice text-based interface by typing

    less filename
    %
    The default editor in FreeBSD is vi, which is efficient to use when you have
    learned it, but somewhat user-unfriendly. To use ee (an easier but less
    powerful editor) instead, set the environment variable EDITOR to /usr/bin/ee
    %
    If you accidentally end up inside vi, you can quit it by pressing Escape, colon
    (:), q (q), bang (!) and pressing return.
    %
    You can use aliases to decrease the amount of typing you need to do to get
    commands you commonly use. Examples of fairly popular aliases include (in
    Bourne shell style, as in /bin/sh, bash, ksh, and zsh):

    alias lf=”ls -FA”
    alias ll=”ls -lA”
    alias su=”su -m”

    In csh or tcsh, these would be

    alias lf ls -FA
    alias ll ls -lA
    alias su su -m

    To remove an alias, you can usually use ‘unalias aliasname’. To list all
    aliases, you can usually type just ‘alias’.
    %
    In order to support national characters for European languages in tools like
    less without creating other nationalisation aspects, set the environment
    variable LC_ALL to ‘en_US.ISO8859-1′.
    %
    You can search for documentation on a keyword by typing

    apropos keyword
    %
    Man pages are divided into section depending on topic. There are 9 different
    sections numbered from 1 (General Commands) to 9 (Kernel Developer’s Manual).
    You can get an introduction to each topic by typing

    man intro

    In other words, to get the intro to general commands, type

    man 1 intro
    %
    FreeBSD is started up by the program ‘init’. The first thing init does when
    starting multiuser mode (ie, starting the computer up for normal use) is to
    run the shell script /etc/rc. By reading /etc/rc, you can learn a lot about
    how the system is put together, which again will make you more confident about
    what happens when you do something with it.
    %
    If you want to play CDs with FreeBSD, a utility for this is already included.
    Type ‘cdcontrol’ then ‘help’ to learn more. (You may need to set the CDROM
    environment variable in order to make cdcontrol want to start.)
    %
    If you have a CD-ROM drive in your machine, you can make the CD-ROM that is
    presently inserted available by typing ‘mount /cdrom’ as root. The CD-ROM
    will be available under /cdrom/. Remember to do ‘umount /cdrom’ before
    removing the CD-ROM (it will usually not be possible to remove the CD-ROM
    without doing this.)

    Note: This tip may not work in all configurations.
    %
    You can install extra packages for FreeBSD by using the ports system.
    If you have installed it, you can download, compile, and install software by
    just typing

    # cd /usr/ports//
    # make install && make clean

    as root. The ports infrastructure will download the software, change it so
    it works on FreeBSD, compile it, install it, register the installation so it
    will be possible to automatically uninstall it, and clean out the temporary
    working space it used. You can remove an installed port you decide you do not
    want after all by typing

    # cd /usr/ports//
    # make deinstall

    as root.
    %
    Nice bash prompt: PS1=’([$(tput md)]t [$(tput me)]) $(echo $?) $ ‘
    – Mathieu
    %
    To see the output from when your computer started, run dmesg(8). If it has
    been replaced with other messages, look at /var/run/dmesg.boot.
    – Francisco Reyes
    %
    You can use “whereis” to locate standard binary, manual page and source
    directories for the specified programs. This can be particularly handy
    when you are trying to find where in the ports tree an application is.

    Try “whereis netscape” and “whereis whereis”.
    – Konstantinos Konstantinidis
    %
    You can press Ctrl-D to quickly exit from a shell, or logout from a
    login shell.
    – Konstantinos Konstantinidis
    %
    You can use “pkg_info” to see a list of packages you have installed.
    – Konstantinos Konstantinidis
    %
    You can change the video mode on all consoles by adding something like
    the following to /etc/rc.conf:

    allscreens=”80×30″

    You can use “vidcontrol -i mode | grep T” for a list of supported text
    modes.
    – Konstantinos Konstantinidis
    %
    Any user that is a member of the wheel group can use “su -” to simulate
    a root login. You can add a user to the wheel group by editing /etc/group.
    – Konstantinos Konstantinidis
    %
    Over quota? “du -s * | sort -n ” will give you a sorted list of your
    directory sizes.
    – David Scheidt
    %
    Handy bash(1) prompt: PS1=”u@h w !$ ”
    – David Scheidt
    %
    Ever wonder what those numbers after command names were, as in cat(1)? It’s
    the section of the manual the man page is in. “man man” will tell you more.
    – David Scheidt
    %
    “man hier” will explain the way FreeBSD filesystems are normally laid out.
    – David Scheidt
    %
    “man tuning” gives some tips how to tune performance of your FreeBSD system.
    – David Scheidt
    %
    “man firewall” will give advice for building a FreeBSD firewall
    – David Scheidt
    %
    You can often get answers to your questions about FreeBSD by searching in the
    FreeBSD mailing list archives at

    http://www.freebsd.org/search.html
    %
    You can adjust the volume of various parts of the sound system in your
    computer by typing ‘mixer ‘. To get a list of what you can
    adjust, just type ‘mixer’.
    %
    You can automatically download and install binary packages by doing

    pkg_add -r

    where you replace with the URL to the package. This will also
    automatically install the packages the package you download is dependent on
    (ie, the packages it needs in order to work.)
    %
    You can get a good standard workstation install by using the
    instant-workstation port/package. If you have ports installed, you can
    install it by doing

    # cd /usr/ports/misc/instant-workstation
    # make install && make clean

    as root. This will install a collection of packages that is convenient to
    have on a workstation.
    %
    You can get a good generic server install by using the
    instant-server port/package. If you have ports installed, you can
    install it by doing

    # cd /usr/ports/misc/instant-server
    # make install && make clean

    as root. This will install a collection of packages that is appropriate for
    running a “generic” server.
    %
    You can make a log of your terminal session with script(1).
    %
    “man ports” gives many useful hints about installing FreeBSD ports.
    %
    “man security” gives very good advice on how to tune the security of your
    FreeBSD system.
    %
    Want to find a specific port, just type the following under /usr/ports,
    or one its subdirectories:

    “make search name=”
    or
    “make search key=”
    %
    Want to see how much virtual memory you’re using? Just type “swapinfo” to
    be shown information about the usage of your swap partitions.
    %
    ports/net/netcat port is useful not only for redirecting input/output
    to TCP or UDP connections, but also for proxying them. See inetd(8) for
    details.
    %
    If other operating systems have damaged your Master Boot Record, you can
    reinstall it either with /stand/sysinstall or with boot0cfg(8). See
    “man boot0cfg” for details.
    %
    Need to see the calendar for this month? Simply type “cal”. To see the
    whole year, type “cal -y”.
    – Dru
    %
    Need to quickly return to your home directory? Type “cd”.
    – Dru
    %
    To see the last time that you logged in, use lastlogin(8).
    – Dru
    %
    To clear the screen, use “clear”. To re-display your screen buffer, press
    the scroll lock key and use your page up button. When you’re finished,
    press the scroll lock key again to get your prompt back.
    – Dru
    %
    To save disk space in your home directory, compress files you rarely
    use with “gzip filename”.
    – Dru
    %
    To read a compressed file without having to first uncompress it, use
    “zcat” or “zmore” to view it.
    – Dru
    %
    To see how much disk space is left on your partitions, use

    df -h
    – Dru
    %
    To see the 10 largest files on a directory or partition, use

    du /partition_or_directory_name | sort -rn | head
    – Dru
    %
    To determine whether a file is a text file, executable, or some other type
    of file, use

    file filename
    – Dru
    %
    Time to change your password? Type “passwd” and follow the prompts.
    – Dru
    %
    Want to know how many words, lines, or bytes are contained in a file? Type
    “wc filename”.
    – Dru
    %
    Need to print a manpage? Use

    man name_of_manpage | col -bx | lpr
    – Dru
    %
    Need to remove all those ^M characters from a DOS file? Try

    tr -d
    <> newfile
    – Originally by Dru
    %
    Forget what directory you are in? Type “pwd”.
    – Dru
    %
    If you are in the C shell and have just installed a new program, you won’t
    be able to run it unless you first type “rehash”.
    – Dru
    %
    Need to leave your terminal for a few minutes and don’t want to logout?
    Use “lock -p”. When you return, use your password as the key to unlock the
    terminal.
    – Dru
    %
    Need to find the location of a program? Use “locate program_name”.
    – Dru
    %
    Forget how to spell a word or a variation of a word? Use

    look portion_of_word_you_know
    – Dru
    %
    To see the last 10 lines of a long file, use “tail filename”. To see the
    first 10 lines, use “head filename”.
    – Dru
    %
    To see how long it takes a command to run, type the word “time” before the
    command name.
    – Dru
    %
    To quickly create an empty file, use “touch filename”.
    – Dru
    %
    To find out the hostname associated with an IP address, use

    dig -x IP_address
    – Dru
    %
    If you use the C shell, add the following line to the .cshrc file in your
    home directory to prevent core files from being written to disk:

    limit coredumpsize 0
    – Dru
    %
    If you need a reminder to leave your terminal, type “leave +hhmm” where
    “hhmm” represents in how many hours and minutes you need to leave.
    – Dru
    %
    Need to do a search in a manpage or in a file you’ve sent to a pager? Use
    “/search_word”. To repeat the same search, type “n” for next.
    – Dru
    %
    Forget when Easter is? Try “ncal -e”. If you need the date for Orthodox
    Easter, use “ncal -o” instead.
    – Dru
    %
    Need to see your routing table? Type “netstat -rn”. The entry with the G
    flag is your gateway.
    – Dru
    %
    Need to see which daemons are listening for connection requests? Use
    “sockstat -4l” for IPv4, and “sockstat -l” for IPv4 and IPv6.
    – Dru
    %
    Can’t remember if you’ve installed a certain port or not? Try “pkg_info
    -Ix port_name”.
    %
    To erase a line you’ve written at the command prompt, use “Ctrl-U”.
    – Dru
    %
    To repeat the last command in the C shell, type “!!”.
    – Dru
    %
    Need to quickly empty a file? Use “: > filename”.
    – Dru
    %
    To see all of the directories on your FreeBSD system, type

    ls -R / | more
    – Dru
    %
    To see the IP addresses currently set on your active interfaces, type
    “ifconfig -u”.
    – Dru
    %
    To see the MAC addresses of the NICs on your system, type

    ifconfig -a
    – Dru
    %
    You can open up a new split-screen window in (n)vi with :N or :E and then
    use ^w to switch between the two.
    %
    sh (the default Bourne shell in FreeBSD) supports command-line editing. Just
    “set -o emacs” or “set -o vi” to enable it.
    %
    When you’ve made modifications to a file in vi(1) and then find that
    you can’t write it, type “!rm -f %” then “:w!” to force the
    write

    This won’t work if you don’t have write permissions to the directory
    and probably won’t be suitable if you’re editing through a symbolic link.
    %
    If you want to quickly check for duplicate package/port installations,
    try the following pkg_info command.

    pkg_info | sort | sed -e ’s/-[0-9].*$//’ |
    uniq -c | grep -v ‘^[[:space:]]*1′
    %
    Want to use sed(1) to edit a file in place? Well, to replace every ‘e’ with
    an ‘o’, in a file named ‘foo’, you can do:

    sed -i.bak s/e/o/g foo

    And you’ll get a backup of the original in a file named ‘foo.bak’, but if you
    want no backup:

    sed -i ” s/e/o/g foo
    %
    To obtain a neat PostScript rendering of a manual page, use “-t” switch
    of the man(1) utility: “man -t ”. For example:

    man -t grep > grep.ps # Save the PostScript version to a file
    or
    man -t printf | lp # Send the PostScript directly to printer



    FreeBSD 8.0-CURRENT

    1 Introduction

    This distribution is a snapshot of FreeBSD 8.0-CURRENT, the latest point along the 8-CURRENT branch.
    1.1 About FreeBSD

    FreeBSD is an operating system based on 4.4 BSD Lite for AMD64 and Intel EM64T based PC hardware (amd64), Intel, AMD, Cyrix or NexGen “x86” based PC hardware (i386), Intel Itanium Processor based computers (ia64), NEC PC-9801/9821 series PCs and compatibles (pc98), and UltraSPARC® machines (sparc64). Versions for the ARM® (arm), MIPS® (mips), and PowerPC® (powerpc) architectures are currently under development as well. FreeBSD works with a wide variety of peripherals and configurations and can be used for everything from software development to games to Internet Service Provision.


    This release of FreeBSD contains everything you need to run such a system, including full source code for the kernel and all utilities in the base distribution. With the source distribution installed, you can literally recompile the entire system from scratch with one command, making it ideal for students, researchers, or users who simply want to see how it all works.

    A large collection of third-party ported software (the “Ports Collection”) is also provided to make it easy to obtain and install all your favorite traditional UNIX® utilities for FreeBSD. Each “port” consists of a set of scripts to retrieve, configure, build, and install a piece of software, with a single command. Over 20,000 ports, from editors to programming languages to graphical applications, make FreeBSD a powerful and comprehensive operating environment that extends far beyond what's provided by many commercial versions of UNIX. Most ports are also available as pre-compiled “packages”, which can be quickly installed from the installation program.
    1.2 Target Audience

    This snapshot is aimed primarily at early adopters and various other users who want to get involved with the ongoing development of FreeBSD. While the FreeBSD development team tries its best to ensure that each snapshot works as advertised, 8-CURRENT is very much a work-in-progress.

    The basic requirements for using this snapshot are technical proficiency with FreeBSD and an understanding of the ongoing development process of FreeBSD 8-CURRENT (as discussed on the FreeBSD-CURRENT mailing list).

    For those more interested in doing business with FreeBSD than in experimenting with new FreeBSD technology, formal releases (such as 7.0-RELEASE) are frequently more appropriate. Releases undergo a period of testing and quality assurance checking to ensure high reliability and dependability.