Here’s how to restore or set the Bash prompt on RHEL systems.
echo "PS1='\u@\h \w]\$'" >> ~/.bashrc source ~/.bashrc |
restore
Saving and Restoring iptables
iptables can be saved or loaded from a file. Here’s a way to do it.
Saving to a file
# Debian/Ubuntu iptables-save > /etc/iptables/rules.v4 # Redhat/Centos/Rocky iptables-save > /etc/sysconfig/iptables |
Loading from a file
# Debian/Ubuntu iptables-restore > /etc/iptables/rules.v4 # Redhat/Centos/Rocky iptables-restore > /etc/sysconfig/iptables |
Listing rules
iptables -L |
Winbind Fix
Here’s the process to restore Winbind.
Restore old config.
cp /etc/sssd/sssd.conf-xxxxxxx /etc/sssd/sssd.conf cp /etc/krb5.conf-xxxxxxx /etc/krb5.conf |
Disable SSSD. Authconfig creates /etc/nswitch.conf.
authconfig --disablesssd --disablesssdauth --updateall |
Start Winbind.
service winbind start; service smb start; service nmb start |
EFS Encryption
If you have an existing EFS that’s unencrypted, you can encrypt it be creating a snapshot using AWS Backup, and then restoring the file system to a new EFS with encryption. If you choose to restore in a directory in the same file system, it will not be encrypted. It has to be a new EFS. In addition, you’ll be asked to select which encryption key to use. The default key will work, unless you have your own.
MySQL Restore to another DB
In order to restore a MySQL database to another database, use routines and triggers.
mysqldump -p user -p --routines --triggers db1 > db1.sql |
To restore to another database, just use the normal command.
mysql -u user -p db2 < db1.sql |