Shell REDIRECT Input

#!/bin/Bashnc_start="NC 192.168.76.227 9999"LOOP=100000  for ((i=0;i< $LOOP; i++))  Do  <<eof$ieof Done

The above example is an example of a call to the NC command to send data to a listening port.

Here Nc_start is just an example, before <<eof can be any command

EOF is a variable name that can be customized, but must appear in pairs.

Any characters before XXX <<eof and EOF (including line breaks) are entered as input and placed into the input stream.

Shell REDIRECT Input