{"id":157,"date":"2016-05-08T02:11:38","date_gmt":"2016-05-08T02:11:38","guid":{"rendered":"http:\/\/mal-home.dyndns.org\/wordpress\/?page_id=157"},"modified":"2017-08-21T22:35:04","modified_gmt":"2017-08-21T22:35:04","slug":"linux-tips-and-tricks","status":"publish","type":"page","link":"https:\/\/avitech.com.au\/?page_id=157","title":{"rendered":"Linux tips and tricks"},"content":{"rendered":"

How do I change the hostname of my RPi?<\/h4>\n

You need to do 3 things:<\/p>\n

    \n
  1. sudo nano vi \/etc\/hostname. You’ll find the existing hostname in this file. Update the hostname as desitred, then save and exit.<\/li>\n
  2. sudo nano \/etc\/hosts. Look for any occurrence of the old hostname in here. Update them, then save and exit.<\/li>\n
  3. sudo reboot<\/li>\n<\/ol>\n

    This technique is derived from the website of Simon the Pi Man<\/a>.<\/p>\n

    \n

    Changing the root of WordPress website<\/h4>\n

    When I first installed WordPress natively, my home page appeared at http:\/\/[website name]\/wordpress.\u00a0 I wanted it to be at http:\/\/[website name].<\/p>\n

    Here’s what I had to do to fix it:<\/p>\n

    root@n36l:\/opt\/wordpress-4.5.1-0\/apps\/wordpress# .\/bnconfig --appurl \/\r\nroot@n36l:\/opt\/wordpress-4.5.1-0\/apps\/wordpress# .\/bnconfig --disable_banner 1\r\nroot@n36l:\/opt\/wordpress-4.5.1-0# \/opt\/wordpress-4.5.1-0\/ctlscript.sh restart apache\r\nSyntax OK\r\n\/opt\/wordpress-4.5.1-0\/apache2\/scripts\/ctl.sh : httpd stopped\r\nSyntax OK\r\n\/opt\/wordpress-4.5.1-0\/apache2\/scripts\/ctl.sh : httpd started at port 80\r\nroot@n36l:\/opt\/wordpress-4.5.1-0#<\/pre>\n
    \n
    Restarting my native install of Bitnami WordPress<\/h4>\n
    To restart the entire stack:<\/p>\n
    malcolm@n36l:~$ sudo -s\r\n[sudo] password for malcolm:\r\nroot@n36l:~# cd \/opt\/wordpress-4.5.1-0\/\r\nroot@n36l:\/opt\/wordpress-4.5.1-0# .\/ctlscript.sh restart\r\nSyntax OK\r\n\/opt\/wordpress-4.5.1-0\/apache2\/scripts\/ctl.sh : httpd stopped\r\n\/opt\/wordpress-4.5.1-0\/mysql\/scripts\/ctl.sh : mysql stopped\r\n2016-05-08T23:05:00.445332Z mysqld_safe Logging to '\/opt\/wordpress-4.5.1-0\/mysql\/data\/mysqld.log'.\r\n2016-05-08T23:05:00.530074Z mysqld_safe Starting mysqld.bin daemon with databases from \/opt\/wordpress-4.5.1-0\/mysql\/data\r\n\/opt\/wordpress-4.5.1-0\/mysql\/scripts\/ctl.sh : mysql  started at port 3306\r\nSyntax OK\r\n\/opt\/wordpress-4.5.1-0\/apache2\/scripts\/ctl.sh : httpd started at port 80\r\nroot@n36l:\/opt\/wordpress-4.5.1-0#\r\n<\/pre>\n
    \n
    Finding and searching files<\/h4>\n
    To find files in the entire filesystem:<\/p>\n
    \r\nmalcolm@n36l:~$ locate -i process.txt\r\n<\/pre>\n
    To find text in files in the current directory recursively:<\/p>\n
    \r\nmalcolm@n36l:~$ grep -Iri 'mscp'\r\n<\/pre>\n
    (I = ignore binary files, r = recursive search, i = case insensitive)<\/p>\n
    Setting up a shared folder for Ubuntu under VirtualBox<\/h4>\n
    On my X1 Carbon I am running Ubuntu 14.04 Desktop 32-Bit under VirtualBox. <\/p>\n
    I wanted to re-establish a shared folder (on the host machine) that can be accessed from within Ubuntu.  I did have this working on my HP8440 (where I first created this VirtualBox .VDI file), but since I’ve created the new virtual machine on the X1 Carbon, I need to re-establish the shared folder.<\/p>\n
    I am using this webpage for guidance -> How to Access Folders on Your Host Machine from an Ubuntu Virtual Machine in VirtualBox<\/a><\/p>\n
    I know that my Ubuntu image already has “VirtualBox Guest Additions” loaded, as I received a message inviting me to update it, which I didn’t do.<\/p>\n
    The process is as follows:<\/p>\n