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Shell Redirection

Redirection

cat /dev/null > file 	clear out a file


>	redirect output to file
>!	Redirect output to file even if file is protected

>>	redirect output to a file apends to existing file

>>! 	redirect output to a file apends to existing file even if file is protected

< 	redirect file to a commands input

<<	redirect file to a commands input untill txt encounterd

>&	redirect output to file and error aswell

	cat Files* >> NewBigFile	

	wc << cat file		WC word count 

2>&1   Redirect error out to std out

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Header Redirect to a webpage in PhP:

<? Header("Location:$gourl"); ?>

http://somedomain.com/redirect.php?gourl=http://someotherdomain.com/hello.html

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