OSX show used ports or listening applications with their PID
On OSX you can display applications listening on a given port using the lsof the commands described below will show listening applications as well as the PID for each application lsof -nP -i4TCP | grep LISTEN lsof -nP -i4TCP:[PORT] | grep LISTEN Where [PORT] is…
New version of set_exadata_passwords.sh
A new version of set_exadata_passwords.sh is available on GitHub. With new options and a bugfix for infiniband switches.The new version is now able to change the password only on one kind of component i.e. db nodes. I wrote about a problem with chpasswd on infiniband…
chpasswd not working after upgrade
After the upgrade of a infiniband switch from version 2.1.5-1 to 2.2.6-2 my script set_exadata_passwords.sh was not working anymore. It can’t change the password of the infiniband switches because the command chpasswd threw the following error: In the blog I’ll explain why it’s not working,…
Preventing bash commands to be displayed in the history or deleting a specific command from history
It’s sometimes useful when using the linux command line to prevent things to go into the bash history; for example if you’re using curl to download a file while providing your username password. This can be easily done in linux by configuring the HISTCONTROL variable…
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