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remove hostname from known_hosts

Show tcp connections sorted by Host / Most connections

Convert CSV to JSON
Replace 'csv_file.csv' with your filename.

Tail a log-file over the network
Netcat is used to serve a log-file over a network on port 1234. Point a browser to the specified server/port combo to view log-file updates in real-time.

find out zombie process
$8~osstat, $2~pid, $11~cmd

show ALL iptable rules
show your current iptable rules from every available iptable table

List processes playing sound
When trying to play a sound you may sometimes get an error saying that your sound card is already used, but not by what process. This will list all processes playing sound, useful to kill processes that you no longer need but that keep using your sound card.

Search for a word in less
Although less behaves more or less like vim in certain aspects, the vim regex for word boundaries (\< and \>) do not work in less. Instead, use \b to denote a word boundary. Therefore, if you want to search for, say, the word "exit", but do not want to search for exiting, exits, etc., then surround "exit" with \b. This is useful if you need to search for specific occurrences of a keyword or command. \b can also be used at just the beginning and end, if needed.

list with full path

Show running services (using systemctl)


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