Thoughts, stories and ideas.
How to display your external IP address using NordVPN API
scheduled for 22 May 2019
How to manipulate X clipboard from terminal
scheduled for 27 May 2019
How to display memory used by processes in human readable form using command-line utilities
scheduled for 03 June 2019
Free dirty objects, page cache and reclaimable slab objects for troubleshooting or instructional purposes.
Today, I will show you how to get and display user details using shell script. This work is based on Python based solution by David Green and located at bitbucket/nordapi.
Sometimes it is very convenient to define shell function and execute it remotely. It is really fun.
Perform dictionary attack on forgotten LUKS passphrase to access encrypted device.
Compare two files byte by byte using cmp file comparison utility.
Use simple shell function to instantly create known_hosts entries for specified host including its IP address and remove outdated public host keys.
Global known_hosts file located in /etc/ssh/ssh_known_hosts and user managed ~/.ssh/known_hosts contains known host public keys. Due to its nature these files can contain multiple entries using the same key. It is not a problem, but merging entries using the same key is the first step that is necessary to inspect it visually and to verify host entries.
Disconnect idle SSH clients using built-in client alive mechanism.
Learn how to erase LUKS header on a specific device.