bashscr:calculate
Differences
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| Both sides previous revisionPrevious revisionNext revision | Previous revisionLast revisionBoth sides next revision | ||
| blog:bashscr:calculate [05.10.2010 13:59] – eanderalx | blog:bashscr:calculate [05.10.2010 14:16] – eanderalx | ||
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| * To calculate with float or more complex thing use " | * To calculate with float or more complex thing use " | ||
| - | < | + | < |
| - | echo "2.5 + 3.2" | bc | + | echo "2.5 + 3.2" | bc -l |
| + | 5.7 | ||
| + | </ | ||
| + | * If you want to cut digits after the decimal point you can use scale (It's **no** rounding like you see in the example) | ||
| + | <code bash> | ||
| + | echo "scale = 4; 2.5 / 1.9 " | bc -l | ||
| + | 1.3157 | ||
| + | echo "scale = 2; 2.5 / 1.9 " | bc -l | ||
| + | 1.31 | ||
| + | </ | ||
| + | * The remaining Problem is: | ||
| + | <code bash> | ||
| + | echo "scale = 2; 2.5 / 3.1 " | bc -l | ||
| + | .8064 | ||
| + | </ | ||
| + | * The leading zero is lost | ||
| + | * You can search and replace using " | ||
| + | <code bash> | ||
| + | echo "scale = 3; 2.5 / 3.1 " | bc -l | sed -r ' | ||
| + | 0.806 | ||
| </ | </ | ||
bashscr/calculate.txt · Last modified: 23.03.2013 18:24 by eanderalx
