[Help] Can anyone help with this?

[Farstrider]

What is the output of "date -u +%W`uname`|sha256sum|sed 's/\W//g'"?

I'm really confused, please help! Thanks in advance.

[tiagosilva29]

date -> Ter Mai 22 00:22:00 WEST 2012

date -u (useless in this context) -> Seg Mai 21 23:22:00 UTC 2012

%W -> Week of the year

date (-u) +%W -> 21

uname (returns the name of the current system, using my own) -> "Linux\n"

So, date -u +%W`uname` has the following stdout: 21Linux\n

which is then piped to the stdin of the next command, which computes a SHA256 message digest.

date -u +%W`uname`|sha256sum -> 67af6029429ba4cb7ba16fdd7fb07853992ef606173ca363ebef3821ace51013 -

which is then piped to the std of the next command, which is a stream editor.

sed 's/\W//g' -> this commands removes every character that isn't a letter or number.

So the final output is 67af6029429ba4cb7ba16fdd7fb07853992ef606173ca363ebef3821ace51013.