Remove /tmp/ cronjob

What is a WHOIS Database? The WHOIS database contains the listing of all registered domains on the internet. You can do a WHOIS lookup to access various details related to a domain like registration date, expiry date, domain ID, name of registrar, contact information, server name and more. The WHOIS database is available to the…

Find and replace text within a file using sed command The procedure to change the text in files under Linux/Unix using sed: Use Stream EDitor (sed) as follows: sed -i ‘s/old-text/new-text/g’ input.txt It tells sed to find all occurrences of ‘old-text‘ and replace with ‘new-text‘ in a file named input.txt The s is the substitute…

Often time, you may need to know which file contains large file size, and delete it to save space. Here’s a code pattern to show you how to find large file size on Linux : 1. File size >= 100MB Find all files that have a size >= 100MB, from root folder and its sub-directories….

Chrome and Firefox have started showing insecure warnings on sites without SSL certificates. Without SSL, your website will show insecure to the visitors. Therefore, using an SSL-encrypted connection for safety, accessibility or PCI compliance reasons is necessary. It becomes very important to redirect from HTTP to HTTPS. What is SSL? SSL (Secure Sockets Layer) is…

While the mailserver generally requires little interaction for those sending or receiving average volumes of email, there may be times when you wish to manage Exim’s settings. To do so, first log in to your server in a terminal client using secure shell (SSH). Use the following commands to work with Exim. Display the number…