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add files to existing growable DVD using growisofs
replace "directory name with files to add to DVD" with actual directory containing files you want to add to growable DVD

Print summary of referers with X amount of occurances
This prints a summary of your referers from your logs as long as they occurred a certain number of times (in this case 500). The grep command excludes the terms, I add this in to remove results Im not interested in.

Show IP Address in prompt --> PS1 var
when working with many machines in a computer lab need to know the IP addr is very large, this is a simplistic solution to make things easier

Empty a file

'Fix' a typescript file created by the 'script' program to remove control characters
attribution: Thanks to repellent on perlmonks.org source: http://www.perlmonks.org/?node_id=684459

cp the file
Copy the file with the given .extension at the source file's location. Eliminates the typing of long paths again and again.

Change the homepage of Firefox
This command modifies the preferences file of Firefox that is located in .mozilla/firefox/*.default/prefs.js. It edits the file with sed and the -i option. Then it searches the string "browser.startup.homepage", and the string next to it (second string). Finally, it replaces the second string with the new homepage, that is http://sliceoflinux.com in the example. It doesn't work if you haven't set any homepage.

Show all current listening programs by port and pid with SS instead of netstat

Read a tcpdump file and count SYN packets to port 80, Order column by destination.

what model of computer I'm using?


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