Difference between revisions of "Os.execute"

From GiderosMobile
(added example from rrraptor)
Line 19: Line 19:
 
if application:getDeviceInfo() == "Windows" then
 
if application:getDeviceInfo() == "Windows" then
 
local lfs = require "lfs"
 
local lfs = require "lfs"
 +
-- go to user/pictures folder
 
lfs.chdir(application:get("directory", "pictures"))
 
lfs.chdir(application:get("directory", "pictures"))
-- checks if "my_new_folder" directory exists
+
-- check if "my_new_folder" directory exists in user/pictures folder
 
local islfsdir = lfs.chdir(lfs.currentdir().."\\".."my_new_folder")
 
local islfsdir = lfs.chdir(lfs.currentdir().."\\".."my_new_folder")
 
if not islfsdir then
 
if not islfsdir then
-- if not exist then create it and go to it
+
-- if doesn't exist then create it and go to it
 
lfs.mkdir(lfs.currentdir().."\\".."my_new_folder")
 
lfs.mkdir(lfs.currentdir().."\\".."my_new_folder")
 
lfs.chdir(lfs.currentdir().."\\".."my_new_folder")
 
lfs.chdir(lfs.currentdir().."\\".."my_new_folder")
 
end
 
end
 
end
 
end
-- opens the current lfs dir
+
-- opens a window of the current lfs dir
 
os.execute("start "..lfs.currentdir())
 
os.execute("start "..lfs.currentdir())
 
</source>
 
</source>
  
 
{{Os}}
 
{{Os}}

Revision as of 14:41, 26 December 2020

Available since: Gideros 2011.6
Class: os

Description

This function is equivalent to the C function system. It passes command to be executed by an operating system shell. It returns a status code which is system-dependent. If command is absent then it returns nonzero if a shell is available and zero otherwise.

(number) = os.execute(command)

Parameters

command: (string) command to execute

Return values

Returns (number) status code

Example

if application:getDeviceInfo() == "Windows" then
	local lfs = require "lfs"
	-- go to user/pictures folder
	lfs.chdir(application:get("directory", "pictures"))
	-- check if "my_new_folder" directory exists in user/pictures folder
	local islfsdir = lfs.chdir(lfs.currentdir().."\\".."my_new_folder")
	if not islfsdir then
		-- if doesn't exist then create it and go to it
		lfs.mkdir(lfs.currentdir().."\\".."my_new_folder")
		lfs.chdir(lfs.currentdir().."\\".."my_new_folder")
	end
end
-- opens a window of the current lfs dir
os.execute("start "..lfs.currentdir())