修改User權限:

修改資料夾權限:

Others

http://linux.vbird.org/linux_basic/0210filepermission.php

切換為Super user:

檢視檔案和資料夾詳細資料:

顯示Server空間使用狀況

• https://askubuntu.com/questions/425791/differences-between-df-df-h-and-df-l

檢視資料夾dir的size:

修改Web User權限

檢視檔案的大小(mb)

檢視Server硬碟相關的用量

https://www.cyberciti.biz/faq/linux-check-disk-space-command/

1. Create crontab file: crontab -e
   This command will enter VI
2. Edit crontab file
   e..g */1 * * * * php /var/html/task.php
   Execute task.php every minute.
3. Ctrl + C to enter VI command mode and enter :wq to exit VI

Line break for log:

Nano commands:

Select: ALT + M + A
Copy: ALT + 6
Paste: CTRL + U

Note:

• Make sure use full path to use php. e.g. /usr/bin/php index.php
• PHP could execute URI of CodeIgniter
  /usr/bin/php /var/www/test/index.php /home/some_action

Reference:

• https://kb.iu.edu/d/afiz
• http://linux.vbird.org/linux_basic/0430cron.php#crontab
• http://stackoverflow.com/questions/15470016/how-to-write-cron-job-in-aws-ec2-server
• Debug:
  https://stackoverflow.com/questions/7397469/why-is-crontab-not-executing-my-php-script
• Write logs:
  https://askubuntu.com/questions/56683/where-is-the-cron-crontab-log
• Usage of VI:
  http://linux.vbird.org/linux_basic/0310vi/0310vi.php
• Nano usage:
  https://www.linuxquestions.org/questions/linux-newbie-8/how-to-copy-paste-a-line-in-nano-editor-548925/

1. Enable rewrite module
   http://stackoverflow.com/questions/869092/how-to-enable-mod-rewrite-for-apache-2-2
   https://www.digitalocean.com/community/questions/how-to-active-sudo-a2enmod-rewrite-for-centos
   Solution: Uncomment the mod_rewrite.so line in /etc/httpd/conf/httpd.conf, restart apache, and you should be good to go.
2. Update directive in .conf (e.g. /etc/apache2/sites-available/000-default.conf)
   https://help.ubuntu.com/community/EnablingUseOfApacheHtaccessFiles
   
   <Directory /var/www/html> Options Indexes FollowSymLinks MultiViews AllowOverride All Order allow,deny allow from all # Uncomment this directive is you want to see apache2's # default start page (in /apache2-default) when you go to / #RedirectMatch ^/$ /apache2-default/ </Directory>

   1 2 3 4 5 6 7 8 9

   <Directory /var/www/html> Options Indexes FollowSymLinks MultiViews AllowOverride All Order allow,deny allow from all # Uncomment this directive is you want to see apache2's # default start page (in /apache2-default) when you go to / #RedirectMatch ^/$ /apache2-default/ </Directory>

   
    

https://help.ubuntu.com/community/MysqlPasswordReset

Sometimes MySql can’t be stopped, try this command:

Reference:

• http://ubuntuforums.org/showthread.php?t=1374747
• Install phpmyadmin on Ubuntu:
  https://help.ubuntu.com/community/phpMyAdmin
  http://linadonis.pixnet.net/blog/post/27585552-ubuntu-server-%E5%AE%89%E8%A3%9D-phpmyadmin