Linux Redirection & Pipes

Features:
1. Ability to control input and output

Input redirection '<': 1. cat < 123.txt Note: Use input redirection when program does NOT default to file as input Output redirection '>':
1. cat 123.txt > onetwothree.txt
Note: Default nature is to:
1. Clobber the target file
2. Populate with information from input stream


Append redirection '>>':
1. cat 123.txt >> numbers.txt - creates 'numbers.txt' if it doesn't exist, or appends if it does

2. cat 456.txt >> numbers.txt


Pipes '|':
Features: Connects the output stream of one command to the input stream of a subsequent command

1. cat 123.txt | sort
2. cat 456.txt 123.txt | sort
3. cat 456.txt 123.txt | sort | grep 3