Linux tips
Run a Linux commnad on multiple servers from a single command/loop
for i in {19..22}; do ssh -t 1.2.3.$i "sudo /sbin/service httpd stop" ; done
for i in {19..22}; do ssh -t 1.2.3.$i "sudo /sbin/service httpd start” ; done
Copy SSH keys to a Linux server so you don't have to type password.
ssh-copy-id IP
Delete similar name folders - list & delete
sudo find /home/ -name "2014*" -ls
sudo find /home/ -name "2014*" -exec rm -rf {} ;