apt-get update failed because certificate verification

Comments Off on apt-get update failed because certificate verification
Ubuntu apt-get update shows Certificate verification failed: The certificate is NOT trusted. The certificate chain uses expired certificate. Could not handshake:
Add AD Group account to Sudoers

Add AD Group account to sudoers in Ubuntu

Comments Off on Add AD Group account to sudoers in Ubuntu
Add %ADgroup ALL=(ALL) ALL to sudoers file to provide sudo privilege to AD group
timedatectl

Update Date, Time, Timezone on Ubuntu

Comments Off on Update Date, Time, Timezone on Ubuntu
Use timedatectl command to view and change time, date and timezone in Ubuntu
Ubuntu Disk Space fdisk and df

Expand Ubuntu disk after adding additional disk space in Hyper-V

Comments Off on Expand Ubuntu disk after adding additional disk space in Hyper-V
Quick and easy steps to expand Ubuntu disk space

Fixing missing network interface card in cloned Linux VM

Comments Off on Fixing missing network interface card in cloned Linux VM
Cloned Linux VM reports missing network interface card because of mismatch MAC address in cloned VM and the one assigned by VMware.

Video – Make permanent installation of OpenSSH server on tiny core Linux

Comments Off on Video – Make permanent installation of OpenSSH server on tiny core Linux
Follow video tutorial to make permanent installation of OpenSSH on tiny core linux

Install SSH Server on Tiny Core Linux

Comments Off on Install SSH Server on Tiny Core Linux
Install OpenSSH on tiny core linux using the command tce-load -wi openssh. Configure persistence SSH setup to remain even after reboot

IPTables Commands

Comments Off on IPTables Commands
Useful commands to allow port in iptables, delete port in iptables, save iptables permanently.

Difference between /sbin/nologin and /bin/false

Comments Off on Difference between /sbin/nologin and /bin/false
Both /sbin/nologin and /bin/false are used to refuse login attempt however they differ slightly on providing customizable error message.

Fix print_req_error: I/O error, dev fd0, sector 0

Comments Off on Fix print_req_error: I/O error, dev fd0, sector 0
In fresh Ubuntu installation, fix print_req_error: I/O error, dev fd0, sector 0
Menu Title