Linux Making a File Road-Only

 Assuming you want to make a file read-only in Linux, you can use the "chmod" command to change its permissions.

Here's the syntax:

bash
chmod [options] mode file

The "mode" parameter specifies the new permissions for the file, and the "file" parameter is the name of the file you want to modify.

To make a file read-only, you need to remove the write permission for the file. You can do this by using the "chmod" command with the "u-w" option, which removes the write permission for the owner of the file:

bash
chmod u-w file.txt

This command removes the write permission for the user who owns the "file.txt" file. If you want to remove write permission for all users, you can use the "a-w" option instead:

bash
chmod a-w file.txt

This command removes write permission for all users (the owner, group, and others).

After making the file read-only, no one can modify or delete it, except for the root user or a user with appropriate privileges.

Comments

Post a Comment

Popular posts from this blog

Introduction to Computer

Image
Computers are electronic devices that are designed to process, store, and retrieve data. They are used for a wide variety of purposes, from personal computing to complex scientific simulations and industrial automation. A computer consists of various hardware components, including a central processing unit (CPU), memory, storage devices, input/output (I/O) devices such as keyboards, mice, and displays, and various other peripherals. Computers communicate with each other over networks, which are interconnected groups of computers that share resources and information. The internet is a global network that connects millions of computers around the world and enables communication and information sharing on an unprecedented scale. The field of computer science is concerned with the study of computers and computational systems, including their design, development, and application. It encompasses many subfields, including artificial intelligence, computer graphics, databases, programming lang...
Read more

History of Computer

Image
  History of Computer Topics  Definition of computer  Earliest computer  Computer History  Computer Generations Definition of Computer  Computer is a programmable machine.  Computer is a machine that manipulates data according to a list of instructions.  Computer is any device which aids humans in performing various kinds of computations or calculations.  Definition of Computer Three principles characteristic of computer:  It responds to a specific set of instructions in a well-defined manner.  It can execute a pre-recorded list of instructions.  It can quickly store and retrieve large amounts of data.  Earliest Computer  Originally calculations were computed by humans, whose job title was computers.  These human computers were typically engaged in the calculation of a mathematical expression.  The calculations of this period were specialized and expensive, requiring years of training in mathematics.  T...
Read more

Computer Generation

Image
 There are five generations of computer:  First generation– 1946 - 1958  Second generation– 1959 - 1964  Third generation– 1965 - 1970  Fourth generation– 1971 - today  Fifth generation– Today to future The First Generation   The first computers used vacuum tubes for circuitry and magnetic drums for memory, and were often enormous, taking up entire rooms.  They were very expensive to operate and in addition to using a great deal of electricity, generated a lot of heat, which was often the cause of malfunctions. The Second Generation   Transistors replaced vacuum tubes and ushered in the second generation of computers.  One transistor replaced the equivalent of 40 vacuum tubes.    Allowing computers to become smaller, faster, cheaper, more energy-efficient and more reliable.  Still generated a great deal of heat that can damage the computer. The Third Generation  The development of the integrated circuit was ...
Read more