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Bo Ørsted Andresen wrote: |
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> On Monday 24 September 2007 21:56:49 Donnie Berkholz wrote: |
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>> > if [[ "$(gcc-major-version)" -gt "3" ]] || \ |
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>> > ( [[ "$(gcc-major-version)" -eq "3" ]] && [[ "$(gcc-minor-version)" -gt |
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>> > "3" ]] ) |
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>> |
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>> Code block { } might be good here instead of a subshell, or perhaps it |
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>> could use logic that's less convoluted such as if..then. Also don't need |
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>> the double quotes. |
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> |
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> Or it could be as simple as: |
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> |
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> if [[ $(gcc-major-version) -gt 3 || \ |
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> ( $(gcc-major-version) -eq 3 && $(gcc-minor-version) -gt 3 ) ]] |
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> |
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> [[ allows grouping of conditions without spawning subshells. |
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> |
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http://wooledge.org/mywiki/BashFAQ#faq31 explains the differences between [[ |
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and [, although in this case I'd use: |
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if ((gcc-major-version>3 || (gcc-major-version==3 && gcc-minor-version>3) )) |
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"As a rule of thumb, [[ is used for strings and files. If you want to |
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compare numbers, use an ArithmeticExpression." |
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-- |
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