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Alan McKinnon writes: |
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> On Thursday 08 October 2009 20:33:01 Neil Bothwick wrote: |
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> > On Thu, 08 Oct 2009 18:54:26 +0300, Nikos Chantziaras wrote: |
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> > > And it's usually quicker to type with backticks instead of $(): |
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> > |
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> > But nowhere near as clear. |
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> |
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> And it's quicker to type "$(" - muscle memory - than to do the whole |
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> hunt- peek-peck thing to find the ` key - I can't touch type it, have |
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> to *look* for it |
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Uh... |
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> :-) |
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... okay :) I for myself was happy when I learnt that $() exists, and |
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prefer it over the backticks notation. Although it's more to type. But it |
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looks better, and I want my scripts to look good. |
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> > Note you can also nest commands when using $(), which you can't do |
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> > with backticks. |
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> |
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> That's neat. But, |
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> |
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> please provide an example where an actual sane human would actually use |
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> it. Coz I can't think of one... |
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Hey, I'm doing this all the time in my scripts. First example I found is |
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this, but there are many more: |
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total=$( mydf -2 "$dir" ) |
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format=$( printf "%%%dd" $( echo $total | wc -c ) ) |
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log 0 " Total: %s MB\n" "$( printf "$format" "$total" )" |
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log 0 " Used: %s MB\n" "$( printf "$format" "$( mydf -3 "$dir" )" )" |
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log 0 " Free: %s MB\n" "$( printf "$format" "$( mydf -4 "$dir" )" )" |
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That was before I knew about ${#total}, so in fact no nesting would be |
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required in line 2. |
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I think I also had tree levels of nesting somewhere, but that was too much |
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fpr Nedit's syntax highlighting, so I de-nested this a little. |
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Wonko the Sane |
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