useful command for tcpdump

Useful TCPDUMP Commands for Packet Sniffer On Redhat/CentOs 7

Tcpdump is a command line interface where we can capture or analyse the packets or sniff them over the network. It’s widely used and...
port adding

Add Port in firewall On Redhat/CentOs 7

Sometimes we need to block some unnecessary port to block or disable as of security. It’s a good practice to keep only required port...
change password force

Force User to Change Password At first Login On Redhat/CentOs 7

There is a way to force a user to change their password at first logon the system. This can be done with –d option. Chage...
failed service

Check Service Is Running Or Not On Redhat/CentOs 7

Sometimes we need to check that service is running on server or not It helps us to troubleshoot easily. It’s a good practice to...
Enable verbose logs in Apache

Enable Verbose Logs In Apache On Redhat/CentOS 7

If you want to see more information about logs in apache web server can be done by changing LogLevel. It can be done in...
tomcat setclasspath

Tomcat 9 “setclasspath.sh” This file Is needed To Run This Program

I was trying to start the Tomcat service at that time I got this issue “setclasspath.sh” This file Is needed To Run This Program....
mysql myisam table

MyISAM Table Maintenance and Crash Recovery On Linux

MyISAM is a default Storage engine for Mysql server and InnoDB is also a storage engine. MyISAM supports three different storage format. Two of them,...
Mysql backup

Restore & Backup Of Mysql Server On Redhat/CentOs 7

Mysql is an open source database server available in today’s costly world. It’s important to have a backup of your files and application. It...
Install Tomcat

Installation Of Apache Tomcat 9 On Redhat/CentOs 7

Apache Tomcat is an Open Source web server and java servlet container which is developed by Apache Org. Tomcat used to implementation of java...
schedule

What is Crontab And what Are Job Roles?

Cron daemon  is a long running process which executes commands at specific time and day. It’s used to scheduling a task in linux. We can...
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