chayan 92 Questions 0 Answers 0 Best Answers 1 Point View Profile 0 chayan Asked: December 7, 2017 How to change a file permission? 0 How to change a file permission? Share Facebook 0 Answers Voted Oldest Recent Random B Mathur 33 Questions 198 Answers 3 Best Answers 433 Points View Profile B Mathur Professional Added an answer on January 7, 2018 at 11:15 pm You can change the file permissions using chmod command in unix. There are three sets of permissions user,group & world. You can assign numbers to each permission Using the numeric mode.For example: 4 = r 2 = w 1 = x chmod 644 demo.php Mode User Group World Read Write Execute Permissions Table 0 No permission 1 Execute permission 2 Write permission 3 Execute and write permission 4 Read permission 5 Read and execute permission 6 Read and write permission 7 All permissions 0 Reply Share Share Share on Facebook Share on Twitter Share on LinkedIn Share on WhatsApp Leave an answerCancel replyYou must login or register to add a new answer.