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36 lines
844 B
Markdown
36 lines
844 B
Markdown
# Sum A Bunch Of Numbers In The Current File
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Let's say I have a bunch of big numbers on consecutive lines in the file I
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currently have open in Vim. Like this:
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```
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418564
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921550
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1180181
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1234458
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2706100
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15954945
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16254608
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```
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If I make a visual selection of those numbers and then hit `:`, it will open a
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command prompt for the beginning (`'<`) to the end (`'>`) of the visual
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selection. I can then shell out those lines to an external command by starting
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the command with `!`. The command to shell out to for this scenario is `awk`
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which can sum up values from a "file" in a single line.
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The whole thing will look like this:
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```
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:'<,'>!awk '{s+=$1} END {print s}'
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```
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Hit enter. Then `awk` will produce the sum and replace the highlighted lines
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with that value.
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```
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38670406
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```
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[source](https://stackoverflow.com/a/450821)
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