Which of the following characters can be combined with a separator string in order to read
from the current input source until the separator string, which is on a separate line and
without any trailing spaces, is reached?
A.
<|
B.
!<
C.
<<
D.
&<
which is on a separate line and without any trailing spaces, is reached?
Which of the following characters can be combined with a separator string in order to read
from the current input source until the separator string, which is on a separate line and
without any trailing spaces, is reached?
What kind of mind does write those questions???
One redirection operator that requires elaboration is the << operator. This operator implements something called a here document. A here document takes text from subsequent lines as standard input. Chances are you won't use this redirector on the command line. Subsequent lines are standard input, so there's no need
to redirect them. Rather, you might use this command in a script to pass data to an interactive program.Unlike with most redirection operators, the text immediately following the << code isn't a filename; instead, it's a word that's used to mark the end of input. For instance, typing someprog << EOF causes someprog to accept input until it sees a line that contains only the string EOF (without even a space
following it)
Sybex Book
Very interesting. Here the same that Mike writes. https://www.ibm.com/developerworks/aix/library/au-unixtext/