Commands by yalestar (2)

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Oneliner to run commands on multiple servers
Oneliner to run commands on multiple servers over ssh. - First parameter "$1" is the command you want to execute remotely. ( It can be multiple commands e.g. "hostname;uptime") - Second parameter "${@:2}" represents the remote host/s you want to run the command/s on.

a function to find the fastest DNS server
http://public-dns.info gives a list of online dns servers. you need to change the country in url (br in this url) with your country code. this command need some time to ping all IP in list.

wget with resume
I couldn't find this on the site and it's a useful switch. Great for large files.

Copy the currently playing song in MPD to somewhere else

View and review the system process tree.
The "pstree" command uses special line-drawing characters. However, when piped into the "less" pager, these are normally disabled.

get all pdf and zips from a website using wget
If the site uses https, use: $ wget --reject html,htm --accept pdf,zip -rl1 --no-check-certificate https-url

In Mac OS X, read the copy area (CMD + V) and convert text to audible speech

The program listening on port 8080 through IPv6
Gets the application's name that's listening from the port 8080 through IPv6

Which processes are listening on a specific port (e.g. port 80)
swap out "80" for your port of interest. Can use port number or named ports e.g. "http"

grab all of google IPv4 network blocks


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