08-19-2005
I assume its because echo (unlike most unix commands) does not 'by default' read from the stdin descriptor. All these commands simply echo a new line:
a) echo "mystring" | echo
b) cat myfile | ehho
c) echo < myfile
d) echo <<EOF
blah1
blah2
EOF
So in your second example:
Quote:
Originally Posted by vino
echo <<EOF >> /tmp/log
A Line in the log file.
The next line in the log file.
And the last line in the log file.
EOF
you are in effect doing:
echo < myinfile > myoutfile
it's just the shell is creating the file for you.
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