CentOS :: /etc/bashrc read-only

:: How to fix /etc/bashrc read only issue on CentOS
+ error permission denied

# echo "alias ftp='/usr/bin/ftp'" >> /etc/bashrc
-bash: /etc/bashrc: Permission denied
# ls -l /etc/bashrc
-rw-r--r-- 1 root root 1708 Sep 22  2009 /etc/bashrc

+ check and change attribute file

# lsattr /etc/bashrc
----i-------- /etc/bashrc
# chattr -i /etc/bashrc
# lsattr /etc/bashrc
------------- /etc/bashrc

+ edit the file

# echo "alias ftp='/usr/bin/ftp'" >> /etc/bashrc

+ checking the file

# tail -n1 /etc/bashrc
alias ftp='/usr/bin/ftp'

 
:: Links
+ Google