![]() Using the command, we can set permissions (read, write, execute) on a file/directory for the owner, group and the world. ![]() We can use the ‘ chmod’ command which stands for ‘change mode’. This can be achieved by changing file permissions. Say you do not want your colleague to see your personal images. This means the user can only:Ĭhanging file/directory permissions in Linux Using ‘chmod’ command The third part is for the world which means any user. It for the user group ‘Home’ and group-members can: ![]() Thus, a user ‘tom’ is added to a group named ‘tom’. will add users to a group of the same group name as the user name. He cannot execute the file since the execute bit is set to ‘-‘.īy design, many Linux distributions like Fedora, CentOS, Ubuntu, etc. The characters are pretty easy to remember. Here, the first ‘ –‘ implies that we have selected a file.p>Įlse, if it were a directory, d would have been shown. ![]() Here, we have highlighted ‘-rw-rw-r–‘and this weird looking code is the one that tells us about the Unix permissions given to the owner, user group and the world. Let’s see file permissions in Linux with examples: If the execute permission is not set, you might still be able to see/modify the program code(provided read & write permissions are set), but not run it. In Unix/Linux, you cannot run a program unless the execute permission is set.
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