Debian/Ubuntu Linux : How To Fix a missing eth0 adapter after moving HDD from one machine to another. Explanation : Debian and Ubuntu write the MAC address of the ethernet adapter to a file that prevents the eth card in the new machine from being recognized. Delete the lines in this persistent-net.rules file and upon reboot, linux will see the...
Its not enough to harden just Ubuntu. Its necessary to harden the rest of LAMP as well. So here is how I do it. Harden MYSQL sudo mysql_secure_installation answer Yes to all questions (but no need to change password) Harden PHP – and tune performance sudo apt-get install php5-suhosin sudo vi /etc/php5/apache2/php.ini uncomment this code or update setting max_execution_time =...
Delete the .bash_history file rm -rf ~/.bash_history Clear the current history stored in RAM history -c
My Cheatsheet of Linux Status Commands | System Commands | Network Commands top htop iotop netstat sudo tail -f /var/log/httpd/error_log mpstat 1 display processors related statistics vmstat 2 display virtual memory statistics iostat 2 display I/O statistics (2 s intervals) systat -vmstat 1 BSD summary of system statistics (1 s intervals) systat -tcp 1 BSD tcp connections (try also -ip)...
Insert the USB stick Type [sudo fdisk -l] [enter] (-l is lower case L) You should see a line: Disk /dev/sdb: xxxxMB, xxxxxxxxxxxxxxbytes LOOK FOR > sdb < NOT sda the xxx should roughly match the size of the USB memory stick >> This confirms the device we want is sdb there should be NO * under Boot [a] –...
sudo apt-get purge google-talkplugin /usr/share/doc/google-talkplugin —————————————- sudo add-apt-repository ppa:ubuntu-audio-dev/ppa sudo apt-get update sudo apt-get install linux-alsa-driver-modules-$(uname -r) alsa-driver alsa-utils
Enable Pre-Login Message Should you wish to display a warning message at the SSH prompt of your server, follow these instructions: Login to your server: sudo vi /etc/ssh/sshd_config uncommment this line #Banner /etc/issue.net add this line to end of file AllowUsers username sudo vi /etc/issue.net enter your warning message. re: ————- W A R N I N G ————- THIS...
This setup is for Virtual Host server – not a dedicated server with a single domain SSH to your server ssh root@IP Update Debian/Ubuntu apt-get update && apt-get upgrade –show-upgraded -y Create User How To Create a User in Linux Setup SSH for Remote Access With GPG Keys – No Password How To Setup SSH for Remote Access IMPORANT –...