LINUX SHELL Here Documents

今天学到一个Linux Bash的新词语，Here docuemnts。

Frequently, your script might call on another program or script that requires input. The here document provides a way of instructing the shell to read input from the current source until a line containing only the search string is found (no trailing blanks). All of the lines read up to that point are then used as the standard input for a command.

echo "These are the web browsers on this system:"
 
# Start here document
cat << BROWSERS
mozilla
links
lynx
konqueror
opera
netscape
BROWSERS
# End here document

从上面可以看出，以BROWSERS开始，到BROWSERS结束为一个文档。

LINUX SHELL Here Documents

原文：http://blog.csdn.net/xfzheng_yeah/article/details/18708821