File.executable?(file_name)   → true or false

Returns true if the named file is executable by the effective user id of this process.

Source Code

/*
* call-seq:
*    File.executable?(file_name)   => true or false
*
* Returns <code>true</code> if the named file is executable by the effective
* user id of this process.
*/

static VALUE
test_x(obj, fname)
   VALUE obj, fname;
{
   SafeStringValue(fname);
   if (eaccess(StringValueCStr(fname), X_OK) < 0) return Qfalse;
   return Qtrue;
}