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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