Commands

• Commands

Example

sefacl

* setfacl -m user:vs:rwx /home/site 

Command to get private ip from aws server and save it to file using grep

• awk command

Example

grep

ip a | egrep -v '127.0.0.1|::1|inet6 |grep inet  | awk -F"/" '{print $1}' | awk '{print $2}' > /var/www/cgi-bin/set_ip.txt
chmod 777 /var/www/cgi-bin/set_ip.txt
cat /var/www/cgi-bin/set_ip.txt

Immutable Files (chattr)

Use the chattr command to make files immutable, preventing them from being deleted or modified, even by the root user.

Example

Make file immutable

# To make a file immutable
sudo chattr +i filename

Remove immutability

# To remove the immutable attribute
sudo chattr -i filename

Check attributes

# To see the attributes of a file
lsattr filename