How To Fix Corrupted FreeSwitch Database Locate your FreeSwitch database files location: # ls -lh /var/lib/freeswitch/db or /usr/local/freeswitch/db Remove all files from that location: # rm /var/lib/freeswitch/db/*.db and then restart FreeSwitch. It will rebuild the FreeSwitch database files # service… Continue Reading
How To Measure Disk Performance IOPS With Fio in Linux The Fio is one of the best disk performance and benchmarking utility for Linux. The Fio is a free and open source. IOPS (Input/Output Operations Per Second) is a… Continue Reading
Setup FQDN for Ubuntu 18.04 LTS The Fully Qualified Domain Name (FQDN) of the system is the name that the resolver returns for the host name. You can check the FQDN using commend: hostname –fqdn or hostname -f. The domain name… Continue Reading
Install Apache Tomcat on Ubuntu 18.04 LTS Apache Tomcat is an open-source software implementation of the Java Servlet and Java Server Pages technologies. With this guide, you’ll run applications within Tomcat using the OpenJDK implementation of the Java development environment.… Continue Reading
Second Network Card Not Being Detected You have dual onboard NIC and ifconfig displays only one interface (eno1) in Ubuntu. eno1 is embedded (onboard) Network Interface Card. Make sure Linux able “see” your networking hardware sudo lspci | grep Ether… Continue Reading
How To Install and Configure Zabbix Agent on Linux – Red Hat Enterprise Linux / CentOS and Debian / Ubuntu Zabbix server requires to install Zabbix Agent on remote Windows and Linux systems. For collecting information and and provide to… Continue Reading
Zimbra Mail Server is sending Spam How to find SMTP Auth usernames (users) who authenticated on the SMTP port to send a bulk emails. The following command will return list of authenticated users on the SMTP port to send an… Continue Reading
How do I scan for viruses with ClamAV? At first you have to update the virus definitions with: sudo freshclam Then you can scan for viruses. clamscan OPTIONS File/Folder If necessary start with root permissions: sudo clamscan. Examples: To check… Continue Reading
How To Monitor Disk Load in Linux iostat utility will help measure and monitor hard drive load: # iostat -dx /dev/sda 5 As result you can see output:
How To Check Disk Speed in Linux From Terminal You can check Linux disk (HDD or SSD) I/O performance with hdparm command. hdparm -Tt /dev/sda will measure show buffered and cached disk read speed. sudo hdparm -Tt /dev/sda Example output:… Continue Reading