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Scripting - EOL

Some hints about the EOL characters on windows and linux.

Overview

	Linux	Windows
Written-out	line feed	carriage return and line feed
Short cut	LF	CRLF
Meta chars	\n	\r\n
ASCII-Code	0a	0d0a

Create files which contain only the EOL characters.

# printf "\n" > linux
# printf "\r\n" > win

Show hexdump of the files.

# xxd linux 
00000000: 0a                                       .
# xxd win 
00000000: 0d0a                                     ..

Let file classify the files.

# file linux 
linux: very short file (no magic)
# file win 
win: ASCII text, with CRLF line terminators

Look how GNU cat prints the EOL characters.

# cat -A linux 
$
# cat -A win 
^M$