xargs is a command on Unix and most Unix-like operating systems used to build and execute command lines from standard input. Commands like grep and awk can accept the standard input as a parameter, or argument by using a pipe. However others like cp and echo disregard the standard input stream and rely solely on the arguments found after the comma
Found on http://en.wikipedia.org/wiki/Xargs
Build and execute command lines from standard input, see Section 188.8.131.52.
Found on http://www.tldp.org/LDP/intro-linux/html/gloss.html
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