_\bs_\bl_\ba_\bv_\be_\b__\bd_\bu_\bm_\bp
performs a database dump like the _\bd_\bu_\bm_\bp opera-
tion, and additionally creates a semaphore file
_\bs_\bl_\ba_\bv_\be_\b__\bd_\bu_\bm_\bp
performs a database dump like the _\bd_\bu_\bm_\bp opera-
tion, and additionally creates a semaphore file