Linux lsattr command details how to use Linux lsattr command

You can use chattr to modify the attributes of a file or directory and run the lsattr command to query its attributes.

Syntax

Lsattr [-adlRvV] [file or directory...]

Parameters:

• -A displays all files and directories, including the additional built-in characters starting with ".", the current directory "." and the upper Directory "..".
• -D display, directory name, rather than its content.
• -L this parameter does not work currently.
• -R recursive processing: All files and subdirectories in the specified directory are processed together.
• -V: displays the file or directory version.
• -V displays the version information.

Instance

1. Use the chattr command to prevent the modification of a key file in the system:

# Chattr + I/etc/resolv. conf

Then run mv/etc/resolv. conf and other commands to operate on the file. Operation not permitted is obtained.

When editing the file, vim prompts the W10: Warning: Changing a readonly file error. To modify this file, remove the I attribute:

Chattr-I/etc/resolv. conf

Use the lsattr command to display the file attributes:

# Lsattr/etc/resolv. conf

Output result:

---- I --------/etc/resolv. conf

2. Allow a file to only append data to it, but not delete it. It is applicable to various log files:

# Chattr + a/var/log/messages