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Display a block of text: multi-line grep with perl
-n reads input, line by line, in a loop sending to $_ Equivalent to while () { mycode } -e execute the following quoted string (i.e. do the following on the same line as the perl command) the elipses .. operator behaves like a range, remembering the state from line to line.

connect to X login screen via vnc
the $15 may change for you depending on your distro, etc...

Scans for open ports using telnet

multiline data block parse and CSV data extraction with perl
extract data in multiline blocks of data with perl pattern matching loop

open two files on top of each other in vim (one window, two panes)

video volume boost

list block devices
Shows all block devices in a tree with descruptions of what they are.

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.

nmap get all active online ips from specific network
scan whole specific network for active online ips

Set all CPU cores' CPU frequency scaling governor to maximum performance


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