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by vram22 3201 days ago
echo "scale=2; $SECONDS / 60 / 60" | bc

# will give 2 digits after the decimal point, instead of bc -l which gives more digits of precision after the decimal point, than we may usually want for this particular calculation.

2 comments

Recently I needed results that included nothing after the decimal point, so resorted to awk to do the math:

   awk "BEGIN { print int($SECONDS /60 /60)}"
Interesting. I suppose you had to type Ctrl-D or Ctrl-Z to signal no input to awk, since it expects some in the above command? Never tried running awk without either a filename as input or stdin coming from a file or a pipe. Will check it and see what happens.

Modifying my example from above:

echo "scale=0; $SECONDS / 60 / 60" | bc

might also work, need to check.

printf "%s 60 60 *2k/p" "$SECONDS" | dc