How do I make a file unreadable in Linux?

How do I make a file not readable in Linux?

3 Answers. Change the permissions on the file so that only the owner can read it and that group and all-users (others) can’t read/write/execute it. This will make the file readable and writable by only the owner of the file.

How do I make a script executable but not readable?

You can setup a script so that it’s not readable by the user, but still executable. The process is a little drawn out, but it’s doable by making an exception in /etc/sudoer so that the user can run the script as yourself temporarily without being prompted for a password.

How do I change the mode of a file in Linux?

To change file and directory permissions, use the command chmod (change mode). The owner of a file can change the permissions for user ( u ), group ( g ), or others ( o ) by adding ( + ) or subtracting ( – ) the read, write, and execute permissions.

Do you need read permission to execute?

You don’t need read permission in order to execute a file. In fact, if you have read permission, but not execute permission, you can’t execute the file. The execute permission allows you to ask the system to execute the script file.

How do I run an encrypted shell script?

SHC stands for shell script compiler.

  1. Download shc and install it. Download shc and install it as shown below. …
  2. Create a Sample Shell Script. …
  3. Encrypt the Shell Script Using shc. …
  4. Execute the Encrypted Shell Script. …
  5. Specifying Expiration Date for Your Shell Script. …
  6. Create Redistributable Encrypted Shell Scripts.

What are the minimum permission needed for a script file in Linux?

2 Answers. You need execute permission to the source directory, and write+execute permission to the target directory.

Is it possible to execute a program that is in a directory for which you do not have read permission?

If you have execute permission but not read, you can drop into it but can not list the files directly. But, if you know names of the files or directories you can list them. The execute permission on directories mean: The ability to cd into this directory, and access the files in this directory.

How do you only execute permission in Unix?

To change directory permissions for everyone, use “u” for users, “g” for group, “o” for others, and “ugo” or “a” (for all). chmod ugo+rwx foldername to give read, write, and execute to everyone. chmod a=r foldername to give only read permission for everyone.

How do I make a bash file executable?

Make a Bash Script Executable

  1. 1) Create a new text file with a . sh extension. …
  2. 2) Add #!/bin/bash to the top of it. This is necessary for the “make it executable” part.
  3. 3) Add lines that you’d normally type at the command line. …
  4. 4) At the command line, run chmod u+x YourScriptFileName.sh. …
  5. 5) Run it whenever you need!

What is the output of who command?

Explanation: who command output the details of the users who are currently logged in to the system. The output includes username, terminal name (on which they are logged in), date and time of their login etc. 11.

How do I list files in Linux?

The easiest way to list files by name is simply to list them using the ls command. Listing files by name (alphanumeric order) is, after all, the default. You can choose the ls (no details) or ls -l (lots of details) to determine your view.

How do I send chmod 777 to a file?

If you are going for a console command it would be: chmod -R 777 /www/store . The -R (or –recursive ) options make it recursive. chmod -R 777 .

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