`shell'
-------

shell(COMMAND)
     :: COMMAND $B$r%7%'%k%3%^%s%I$H$7$F<B9T$9$k(B.

RETURN
     $B<+A3?t(B

COMMAND
     $BJ8;zNs(B

   * COMMAND $B$r(B C $B$N(B `system()' $BH!?t$K$h$j%7%'%k%3%^%s%I$H$7$F<B9T$9$k(B.
     $B%7%'%k$N=*N;%9%F!<%?%9$rJV$9(B.

     [0] shell("ls");
     alg             da              katsura         ralg            suit
     algt            defs.h          kimura          ratint          test
     alpi            edet            kimura3         robot           texput.log
     asir.o          fee             mfee            sasa            wang
     asir_symtab     gr              mksym           shira           wang_data
     base            gr.h            mp              snf1            wt
     bgk             help            msubst          solve
     chou            hom             p               sp
     const           ifplot          proot           strum
     cyclic          is              r               sugar
     0
     [1]

