Linux: how to get or delete first line of a file
Linux: how to get first line of a file Example: Linux: how to get last line of a file Example: Linux: how to delete first…
Author: phptuts
Linux: How to check your Local and Public IPv4/v6 address
Local IPv4 address Method 1: Method 2: Method 3: Method 4: Public IPv4 address Method 1: Method 2: Method 3: Method 4: Method 5: Local…
Linux: how to replace contents of file
Example we have many html files with content like: How to replace <br> to new line of all html files with a command line in…
Linux: How to generate list of unique lines in a text file
We have two methods: Method 1: Method 2:
Linux: How to append contents of multiple files into one
Example we have many html file: How to join them into one file?
How to fix Error Nginx: (13: Permission denied) while connecting to upstream
How to fix Error Nginx: (13: Permission denied) while connecting to upstream This error is due by SELinux, so, we can fix this error by…
How to configure HAProxy to include host headers
Example we have 2 nodes for load balancing: node1.tutorialspots.com node2.tutorialspots.com We have 2 methods to configure HAProxy to include host headers Method 1: Method 2:
Node.JS: Using spawn to import a database
Example 1: background process: File api.js Example link: http://tutorialspots.com/api/import?u=admin_tutorialspots&p=tutorialspots&db=admin_tutorialspots&file=/root/tutorialspots.sql Example 2: event when import done File api.js: Example link: http://tutorialspots.com/api/importdone?u=admin_tutorialspots&p=tutorialspots&db=admin_tutorialspots&file=/root/tutorialspots.sql
WordPress API: insert a new tag / get a tag
CURL: Result for insert a new tag: Result for get a tag by name: PHP:
Use Let’s Encrypt certificate in VestaCP
EXAMPLE 1: Example for main domain, after the installation of VestaCP, we see the login information: I. Create certificate for main domain (tutorialspots.com) Step I.1:…