In other words, of there is a file called "xyz", and it is in your searchpath, and the file is executable, all you need to do to run the program is type If it's a binary file/program, you can execute Permission, then you can ask the operating system to run the file as You can empty a file called "yourfile" by copying the empty (/dev/null) file on top of it This means you can add to a file, or overwrite a file. If you have write permission of a file, you can change the file. That means you can use more(1), cat(1), etc. If you have read permission of a file, you can see the contents. There are three basic attributes for plain file permissions: read, write, and execute. These are tcsh aliases, not bash aliases.īasic File Attributes - Read, Write and Execute Unfortunately I have go cover the basics, so In this tutorial, I'll go into detail over file permissions, and discuss some "Special-purpose" access modes for executable files. How to prevent others from even looking at yourĭirectories. How to prevent others from deleting files in How to make files read-only,Įxecutable, and so on. Original version written in 1995 and published in the Sun Observer Use, and link to this page, but you are not allowed to make electronicĬopies, or redistribute this tutorial in any form without permission. You are allowed to print copies of this tutorial for your personal ![]() Basic Directory Attributes - Read, Write and SearchĬopyright 1995 Bruce Barnett and General Electric Company.Basic File Attributes - Read, Write and Execute.Also see my Unix Page for more tutorials on Unix
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