... while_LINE_line_bottomreal 7m20 .48 suser 0m51.01ssys 6m 14. 57sMethod 7:function while_LINE_line_cmdsub2real 7m18.04suser 0m52.01ssys 6m10.94sMethod 8:function while_LINE_line_bottom_cmdsub2real 7m20.34sListing ... $(command). Method 4: function cat_while_LINE_linereal 7m16.87suser 0m51.87ssys 6m8.54sMethod 7:function while_LINE_line_cmdsub2real 7m18.04suser 0m52.01ssys 6m10.94sListing 2.22 Command ... almost every shell script that does file parsing. Method 1 is 1 ,43 3 per-cent slower than either Method 2 or 9 in execution time. The delta percentage betweenfirst and last place is 8 ,47 9 percent....