Task

Run either the   ls   system command   (dir   on Windows),   or the   pause   system command.




Related task
  Get system command output


 -- system --
-- the simplest way --
-- system spawns a new shell so I/O redirection is possible --
 
system( "dir /w c:\temp\ " ) -- Microsoft --
 
system( "/bin/ls -l /tmp" ) -- Linux BSD OSX --
 
----
 
 -- system_exec() --                                                                                                                                         
 -- system_exec does not spawn a new shell --                                                                                                                  
 -- ( like bash or cmd.exe ) --                                                                                                                                 
 
integer exit_code = 0
sequence ls_command = ""
 
ifdef UNIX or LINUX or OSX then
    ls_command = "/bin/ls -l "
elsifdef WINDOWS then
    ls_command = "dir /w "
end ifdef
 
exit_code = system_exec( ls_command )
 
if exit_code = -1 then
    puts( STDERR, " could not execute " & ls_command & "\n" )
elsif exit_code = 0 then
    puts( STDERR, ls_command & " succeeded\n")
else
    printf( STDERR, "command %s failed with code %d\n", ls_command, exit_code)
end if