chattr COMMAND:
chattr command is used to change the file attributes. This is an admin command. Root user only can change the file attributes/Process.
SYNTAX:
The Syntax is
chattr [options] filename
OPTIONS:
+i
Make the file as Read-Only.
-i
Remove the Read-Only.
+a
Can't open file for writing.
-a
Open file for writing.
+S
The changes in the file are written synchronously on the disk.
EXAMPLE:
chattr +i test.txt
Here the 'test.txt' file has the write permission, to make it as Read-Only file use +i option.
chattr -i test.txt
The above command process is used to remove the Read-Only mark.
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