tr explanation please


 
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Old 05-31-2007
tr explanation please

how does below tr command replace nonletters with newlines?

I think I understand tr -cs '\n' part.. but what is

A-Za-z\' <--- what is this??

tr -cs A-Za-z\' '\n' |


-c --complement

-s, --squeeze-repeats
replace each input sequence of a repeated character that is listed in SET1 with a single occurrence of that charac-
ter
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fixed(3alleg4)							  Allegro manual						    fixed(3alleg4)

NAME
fixed - Fixed point integer to replace floats. Allegro game programming library. SYNOPSIS
#include <allegro.h> typedef long fixed DESCRIPTION
This is a fixed point integer which can replace float with similar results and is faster than float on low end machines. Read chapter "Fixed point math routines" for the full explanation. SEE ALSO
, ex12bit(3alleg4), ex3buf(3alleg4), ex3d(3alleg4), excustom(3alleg4), exfixed(3alleg4), exrotscl(3alleg4), exspline(3alleg4), exsprite(3alleg4), exstars(3alleg4), exupdate(3alleg4) Allegro version 4.4.2 fixed(3alleg4)