Category: Linux
Configure rsyslog in Linux
1. Install rsyslog (if not already installed) 2. Edit rsyslog Configuration Uncomment or add the following line to enable UDP reception: 3. Open Firewall Port…
Configure Login Banner in Ubuntu
1. Edit the Banner message sudo nano /etc/issue.net Sample text: Authorized access only. Unauthorized use is prohibited and may be monitored. 2. Configure SSH to…
Manage User Accounts and Privileges in Ubuntu
1. List all users in Ubuntu cut -d: -f1 /etc/passwd Explanation: cut : command-line utility that extracts sections from lines of a file or input…
Setup parsedmarc in Ubuntu
Step 1: Install Maxmind Step 2: Prerequisite Step 3: Create system user Step 4: Install parsedmarc in a virtual directory Note: Ignore the installation error…
Commands to identify and manage large Linux files
Linux command to list large files in a folder Linux command to truncate size of large files Replace with the desired size in bytes, kilobytes…
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 in Ubuntu
Add %ADgroup ALL=(ALL) ALL to sudoers file to provide sudo privilege to AD group
Update Date, Time, Timezone on Ubuntu
Use timedatectl command to view and change time, date and timezone in Ubuntu
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
Cloned Linux VM reports missing network interface card because of mismatch MAC address in cloned VM and the one assigned by VMware.