Tall Birch

All credit for this wonderful trick belongs to my co-worker Adam.
If you need to replace a common string in multiple files to another common string, you can use the rename command.
rename _from_ _to_ filename
so rename a b a*.log
would change a1.log to b1.log and a2.log to b2.log
further, if you want to remove that common string, you [...]

Creating a self-signed certificate that is oracle friendly got a lot easier when I discovered the orapki utility via a comment made by ‘Frank‘ here.
Simply navigate to your oracle wallet directory and type
orapki wallet create -wallet ./ -auto_login
(you will be prompted to establish a new password for this wallet)
and then type
orapki wallet add -wallet ./ [...]