shell (sh) command execution, no output
unix_s(cmd)
:cmd a character string :
Sends a string cmd to Unix for execution by the sh shell. The standard output is redirected to /dev/null. Unix execution errors are trapped; NOTE that only the last shell command error is reported when a list of command separated by ”;” is sent: this is not recommended.
if `getos`_() == 'Windows' then
unix_s("del foo");
else
unix_s("rm -f foo");
end