For PHP version go here.
This is another example of “how to update Facebook status without any official API’s or apps” written in BASH (shell script). It is depending on the CURL program (which is included in most systems).
This bash script is also compatible with Mac OS X because of it’s unix-like architecture and because it includes the program “curl” (that is why i didn’t use “wget” this time). My script can currently log in, update status and log out. But there are plenty of things you could do in between, like updating pages, downloading photos, reading statuses, events… If you have a feature request post it in the comments. And if there is something you would improve, post that too!

Make sure that you:
- Enter a correct email and password,
- Have CURL with SSL support installed,
- Have read/write permissions in current directory.
- Run it with “bash” and not with “sh”.

• Download:fb-bot-bash

#!/bin/bash
#
# Facebook command line status update bot v1.0
# Author: Luka Pusic <pusic93@gmail.com>
# http://360percents.com/posts/bash-script-to-update-facebook-status-linux-mac-os-x/
#
email="email@domain.com"
pass="your_password"
status="yay :)" #must be less than 420 chars

touch "cookie.txt" #create a temp. cookie file
loginpage=`curl -s -c ./cookie.txt -A "Mozilla/5.0" "http://m.facebook.com"` #initial cookies

#LOGIN PARAMETERS
form_action=`echo "$loginpage" | tr '"' "\n" | grep "https://www.facebook.com/login.php"`
form_data=`echo "$loginpage" | sed -e 's/.*<form//' | sed -e 's/form>.*//' | tr '/>' "\n" | grep 'input ' | grep -v "email\|pass"`

#FUNCTION PARSES FORM DATA LIKE HIDDEN INPUTS
function parse_form() {
    form_data="$1"
    params=""
        for (( i=1; i <= `echo "$form_data" | wc -l` ; i++ ))
            do
                name=`echo "$form_data" | sed -n "$i"p | tr ' ' "\n" | grep 'name' | cut -d '"' -f 2`
                value=`echo "$form_data" | sed -n "$i"p | tr ' ' "\n" | grep 'value' | cut -d '"' -f 2`
                params="$params$name=$value&"
            done
         echo "$params"
}

#LOGIN
params="email=$email&pass=$pass&"`parse_form "$form_data"`
logged_in=`curl -s -b ./cookie.txt -c ./cookie.txt -A "Mozilla/5.0" -d "$params" -L "$form_action"`
homepage=`curl -s -b ./cookie.txt -c ./cookie.txt -A "Mozilla/5.0" -L "http://m.facebook.com/profile.php"`

#UPDATE STATUS
status_form=`echo "$homepage" | sed -e 's/.*<form id="composer_form//' | sed -e 's/textarea>.*//' | tr '/>' "\n" | grep 'input ' | grep 'name' | grep -v 'query' | grep -v 'status'`
status_action=`echo "$homepage" | tr '"' "\n" | grep "/a/home.php?refid="`
status_params=`parse_form "$status_form"`"status=$status&update=Share"
update=`curl -s -b ./cookie.txt -c ./cookie.txt -A "Mozilla/5.0" -d "$status_params" -L "http://m.facebook.com$status_action"`
#$callback=`echo "$update" | grep "$status"` #just a primitive example of success checking

#LOGOUT
logout_link=`echo "$update" | tr '"' "\n" | grep "/logout.php?"`
logout=`curl -s -b ./cookie.txt -c ./cookie.txt -A "Mozilla/5.0" -L "http://m.facebook.com$logout_link"`

rm "cookie.txt" #remove cookie file