sudo , wifi connect command

• To see list of saved connections, use (<SavedWiFiConn>)

  nmcli c
  

• To see list of available WiFi hotspots (<WiFiSSID>)

  nmcli d wifi list

sudo nmcli d wifi connect iSSA_ASUS_50_2.4G password 54098542 iface wlan0

Reference:

https://askubuntu.com/questions/461825/how-to-connect-to-wifi-from-the-command-line

www-data        ALL=(ALL) NOPASSWD: /usr/bin/amixer

PHP system call system/exec/shell_exec difference and sudo

PHP system call system/exec/shell_exec difference

• system()
  • $last_line = system('ls', $return_var);
  • system() 會將輸出內容直接印出, 所以若於網頁, 會將所有回傳內容都顯示於頁面上.
  • $last_line: 只能取得最後一行的內容
  • $return_var: 取得系統狀態回傳碼
• exec()
  • exec('ls', $output, $return_var);
  • $output: 回傳內容都會存於此變數中(儲存成陣列), 不會直接秀在頁面上.
  • $return_var: 取得系統狀態回傳碼
• shell_exec()
• $output = shell_exec('ls');
• $output: 回傳內容都會存於此變數中(儲存成純文字內容), 不會直接秀在頁面上.

www-data        ALL=(ALL) NOPASSWD: /usr/bin/amixer

Reference:

https://blog.longwin.com.tw/2013/06/php-system-exec-shell_exec-diff-2013/

nginx dependent file

        sudo apt-get install nginx nginx-common nginx-core fcgiwrap php7.0 apache2-utils

        sudo systemctl restart php7.0-fpm nginx

        #systemctl status nginx.service

.htpasswd add script

        sudo htpasswd -cb /etc/nginx/cam.htpasswd root pass

PHP7

Nginx

The following NEW packages will be installed: 1,346 kB
  nginx nginx-common nginx-core

Suggested packages:

  fcgiwrap nginx-doc

/etc/nginx/nginx.conf

service nginx restart

restart service:

sudo systemctl restart php7.0-fpm nginx

debug: 

• systemctl status nginx.service
• journalctl -xe

/etc/nginx/sites-available/example.com

--------------------

server {
    listen 80;
    listen [::]:80;

    server_name example.com;

    root   /var/www/html/example.com/public_html;
    index  index.html index.php;

    location / {
        try_files $uri $uri/ =404;
    }
    location ~ \.php$ {
            include snippets/fastcgi-php.conf;
            include fastcgi_params;
            fastcgi_pass unix:/run/php/php7.0-fpm.sock;
            fastcgi_param SCRIPT_FILENAME /var/www/html/example.com/public_html$fastcgi_script_name;
    }
}

--------------------

https://www.linode.com/docs/web-servers/nginx/install-and-configure-nginx-and-php-fastcgi-on-ubuntu-16-04/

PHP7

 config file

• 13.2 MB
• /etc/php/7.0/fpm/php.ini
• /etc/php/7.0/cli/php.ini
• /etc/php/7.0/mods-available/
• /usr/bin/php
• /usr/bin/phar
• /usr/bin/phar.phar

dependency

The following additional packages will be installed:

  php-common php7.0 php7.0-cli php7.0-common php7.0-fpm php7.0-json php7.0-opcache php7.0-readline

<form class="form-horizontal" action="送至.php" method="post" role="form">

表單元件

</form>

表單中加入「表單欄位」：

<form class="form-horizontal" action="index.php" method="post" role="form">

<div class="form-group">

<label class="col-md-4 control-label" for="name">帳號：</label>

<div class="col-md-8">

<input type="text" name="name" id="name" placeholder="請輸入帳號" class="form-control">

</div>

</div>

<div class="form-group">

<label class="col-md-4 control-label" for="passwd">密碼：</label>

<div class="col-md-8">

<input type="password" name="passwd" id="passwd" placeholder="請輸入密碼" class="form-control">

</div>

</div>

<div class="text-center">

<input type="hidden" name="op" value="login">

<button type="submit" name="button" class="btn btn-primary">登入</button>

</div>

</form>

Referebnce: 

1. https://campus-xoops.tn.edu.tw/modules/tad_book3/html.php?tbdsn=703
2. nginx config