Groups > comp.lang.java.programmer > #5078

Re: “Stardate” Version Numbering

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From	Andreas Leitgeb <avl@gamma.logic.tuwien.ac.at>
Subject	Re: “Stardate” Version Numbering
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Date	07 Jun 2011 23:25:41 GMT
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Lawrence D'Oliveiro <ldo@geek-central.gen.new_zealand> wrote:
> In message <4dee15eb$0$49174$e4fe514c@news.xs4all.nl>, Silvio wrote:
>> What about date +%s%N
> Close. Try this version: doesn’t need Julian, and also shorter:
> sed -i -r 's/(android:versionName=\")[^\"]*(\")/\1'"$(bc <<<"scale = 1; ($(date +%s)) / 86400")"'\2/' AndroidManifest.xml

I don't quite see the reason why you would actually capture the closing
double-quote char...  and double-quotes aren't special to "sed -r", so they
need no backslash before them. Then the last lingle-quoted part can be
included into the double-quoted middle part, re-introducing one \", but
making it again shorter. Also, removing some redundant spaces, quotes and
parens from around bc, and replacing one of the $(...) with backticks
shortens it again.

sed -i -r 's/(android:versionName=")[^"]*"/\1'$(bc<<<scale=1\;`date +%s`/86400)\"/ AndroidManifest.xml

Btw., it won't be compatible with older shells (e.g. ksh), though,
for the "<<<".

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Thread

“Stardate” Version Numbering Lawrence D'Oliveiro <ldo@geek-central.gen.new_zealand> - 2011-06-07 11:59 +0000
  Re: “Stardate” Version Numbering Silvio <silvio@moc.com> - 2011-06-07 14:13 +0200
    Re: “Stardate” Version Numbering bugbear <bugbear@trim_papermule.co.uk_trim> - 2011-06-07 13:51 +0100
      Re: “Stardate” Version Numbering Arved Sandstrom <asandstrom3minus1@eastlink.ca> - 2011-06-07 18:15 -0300
    Re: “Stardate” Version Numbering Lawrence D'Oliveiro <ldo@geek-central.gen.new_zealand> - 2011-06-08 10:46 +1200
      Re: “Stardate” Version Numbering Andreas Leitgeb <avl@gamma.logic.tuwien.ac.at> - 2011-06-07 23:25 +0000
  Re: “Stardate” Version Numbering Daniele Futtorovic <da.futt.news@laposte-dot-net.invalid> - 2011-06-07 18:52 +0200

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