How to split a string in shell and get the last field. in this tutorial, i written a small program use bash script split string /www/huu/pha...
Lock and Unlock zimbra account from command line
How to Lock and Unlock zimbra account from command line. some account sending email spam, you are administrator to need lock account from c...
Linux diff command
In this tutorial, I use diff command output on screen. How to compare different line by line in files. How to compare side by side, color ,...
Postfix only allow whitelisted Recipient Domain
In this tutorial, How to Configure "Postfix only allow whitelisted Recipient Domain". We test environment with user data. To minim...
Bash script arguments from a file content
In this tutorial, how to change string content of file as arguments. I written Bash script arguments from a file content as below: Input f...
Bash script argument default value and takes optional input arguments
In this tutorial, I have written bash script Bash script argument default value and takes optional input arguments. Using $# argument to i...
How to NGINX Solution for Apache ProxyPassReverse
NGINX Solution for Apache ProxyPassReverse Apache configure <VirtualHost myhost:8888> ServerName myhost DocumentRoot ...
Openssl libssl.so.1.1 not found solve problem
How to solve problem Openssl libssl.so.1.1 not found on your system such as centos, ubuntu. Installing openssl missing depens libssl.so.1.1 ...
Remove old kernels in CentOS, RHEL and Fedora
Your system to many old kernels version. How to remove old kernels in CentOS , RHEL and Fedora . For example, I have three kernel,and to ke...
sed command regex example
In this tutorial, To use sed command regex such as: Lines starting from A till B printed, how to print between A line to B line , so on. s...