Commands tagged fix broken (1)

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Drop or block attackers IP with null routes
Someone might attack on your system. You can drop attacker IP using IPtables. However, you can use route command to null route unwanted traffic. A null route (also called as blackhole route) is a network route or kernel routing table entry that goes nowhere. Matching packets are dropped (ignored) rather than forwarded, acting as a kind of very limited firewall. The act of using null routes is often called blackhole filtering.

Recover tmp flash videos (deleted immediately by the browser plugin)
Newer versions of the flashplayer browser plugin delete the tmp flash video immediately after opening a filehandle to prevent the user from "exporting" the video by simply copying the /tmp/FlashXYZ file. This command searches such deleted flash videos and creates symbolic links to the opened filehandle with the same name as the deleted file. This allows you to play your flash-videos (from e.g. youtube) with e.g. mplayer or copy the buffered video if you want to keep it.

SMS reminder
Send an e-mail to SMS reminder in 15 minutes from now, to call my wife. See list of carriers bellow Carrier Email to SMS Gateway Alltel [10-digit phone number]@message.alltel.com AT&T (formerly Cingular) [10-digit phone number]@txt.att.net [10-digit phone number]@mms.att.net (MMS) [10-digit phone number]@cingularme.com Boost Mobile [10-digit phone number]@myboostmobile.com Nextel (now Sprint Nextel) [10-digit telephone number]@messaging.nextel.com Sprint PCS (now Sprint Nextel) [10-digit phone number]@messaging.sprintpcs.com [10-digit phone number]@pm.sprint.com (MMS) T-Mobile [10-digit phone number]@tmomail.net US Cellular [10-digit phone number]email.uscc.net (SMS) [10-digit phone number]@mms.uscc.net (MMS) Verizon [10-digit phone number]@vtext.com [10-digit phone number]@vzwpix.com (MMS) Virgin Mobile USA [10-digit phone number]@vmobl.com

Random IPv4 address

Search manpages for a keyword
Search manpages for a keyword. Very useful when you don't know where to find the information.

display contents of a file w/o any comments or blank lines

Calculate days on which Friday the 13th occurs
I removed the dependency of the English language

Batch Convert SVG to PNG
Convert some SVG files into PNG using ImageMagick's convert command.

Re-use the previous command output
The $(!!) will expand to the previous command output (by re-running the command), which becomes the parameter of the new command newcommand.

Terrorist threat level text


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