Appending Output and Error in Linux

Run the following find command, saving standard output to a file> View the contents of the newly created file:
$find /etc -name passwd > /tmp/find.out $cat /tmp/find.out
Run another find command, saving standard output to the same file.
$find /etc -name network > /tmp/find.out $cat /tmp/find.out
Note the the find command, above, overwrote the original find command output. Now, rerun the two find commands, appending the information. View the results:

$rm /tmp/find.out $find /etc -name passwd > /tmp/find.out $find /etc -name group >> /tmp/find.out $cat /tmp/find.out
Let’s repeat that command series, but this time, let’s throw away the error messages:
$rm /tmp/find.out
$find /etc -name passwd > /tmp/find.out 2> /dev/null
$find /etc -name squid >> /tmp/find.out 2>/dev/null
$cat /tmp/find.out

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