command: chattr
usage: change file attributes on a Linux file system
syntax: # chattr [ -RVf ] [ -v version ] [+-=acdeijstuADST] files...
where + add attribute
- remove attribute
= assign attributes
examples:
1. To make a file read only
$ chattr +i sample.txt
2. To make a file again from read only to write
$ chattr -i sample.txt
3. To set open a file in append mode super user can do this
$ chattr +a sample.txt
4. To remove the above permission +a to the file
$ chattr -a sample.txt
regards,
dhanasekar
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