[SLUG] two silly bash questions I can't find in google

[david <david@xxxxxxxxxxxxx>]

Q1. why does sed lose the first line?

david@david:~/test$ cat blah
the quick
brown fox jumps
over
the lazy
dog
david@david:~/test$ cat blah | while read line ; do sed s/t/T/ ; done
brown fox jumps
over
The lazy
dog
david@david:~/test$

Q2. what does the @ mean?

david@david:~$ date -d @1174306440
Mon Mar 19 23:14:00 EST 2007

I got this from a google search - the string is from a mysql timestamp which 
didn't include the @     I can't find a reference to @ in the date man page.

thanks...

David.