chmod en el ejemplo de código de Windows

Ejemplo 1: bash como funcionan los permisos

# How permissions/changing permissions works in linux. Permissions are
#	generally listed in a format like rwxrw-r--, where r, w, x, and - 
#	stand for read, write, execute, and no permission respectively. There 
#	are basically three groups of rwx permissions: user, group, others
#	and depending on your relationship to the files, you might be any one
#	of these. 

#	To change file permissions, (e.g. chmod ### file), you need to 
#	indicate three decimal digits (0-7) which specify the three sets
#	of permissionswhen converted to binary. Briefly, a decimal number
#	between 0 and 7 can be represented by a three digit binary string.
#	The binary string sets the permissions by treating 1 as "true" or 
#	permission granted and 0 as "false", or permission denied. See the
#	table below for all the conversions and their meanings:

Decimal		Binary		Permission		Permission meaning
7			111			rwx				read, write, and execute
6			110			rw-				read and write
5			101			r-x				read and execute
4			100			r--				read only
3			011			-wx				write and execute
2			010			-w-				write only
1			001			--x				execute only
0			000			---				none

Ejemplo 2: chmod

For changing permissions mode of files as "file.exe" follow next examples idea:
chmod file.exe ugo+x #Add x:execute permissions to u:user g:gropu and o:others
chmod file.exe o-rw  #Remove r:read and w:write permissions to o:others
chmod file.exe +rwx  #Add all r:read, w:wirte and x:execute permissions to all.

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