I'm going crazy trying to follow the sed BRE (Basic Regular Expression) rules to replace a pretty simple occurrence in an HTML file.
I think I'm following the spec correctly, but none of my attempts are working.
What I'd like to do is replace the contents of one meta tag with something new (which I'm calculating as part of the script I'm writing). Basically, the meta tag looks like this:
<meta version="v0.103.2" />
It always contains an attribute which follows that syntax, which in a JS regular expression could be characterized as:
/version=\"v[0-9]+\.[0-9]+\.[0-9]+\"/g
So I've tried a whole bunch of sed commands to get this working, and it just doesn't seem to work as documented, unless I'm misunderstanding things. Some of the commands I've tried:
I'm on a Mac (which matters because of
sedsyntax changes between Unix/Linux), and this accounts for the''in the commands below.
✗ sed -i -E '' s/version=\"v[[:digit:]]+\.[[:digit:]]+\.[[:digit:]]+/version=\"whatever/g ./src/index.html ✗ sed -i -E '' s/version=\"v[[:digit:]]+\.[[:digit:]]+\.[[:digit:]]+/version=\"whatever/g './src/index.html' ✗ sed -i -E s/version=\"v[[:digit:]]+\.[[:digit:]]+\.[[:digit:]]+/version=\"whatever/g ./src/index.html ✗ sed -i -E s/version=\"v[[:digit:]]+\.[[:digit:]]+\.[[:digit:]]+/version=\whatever/g ./src/index.html ✗ sed -i -E s/version=\"v[[:digit:]]+\.[[:digit:]]+\.[[:digit:]]+/version=\"whatever/g ./src/index.html ✗ sed -i '' s/version=\"v[[:digit:]]+\.[[:digit:]]+\.[[:digit:]]+/version=\"whatever/g ./src/index.html ✗ sed -i '' s/version=\"v[[:digit:]]+\.[[:digit:]]+\.[[:digit:]]+/version=\whatever/g ./src/index.html ✗ sed -i '' s/version=\"v[:digit:]+\.[:digit:]+\.[:digit:]+/version=\whatever/g ./src/index.html ✗ sed -i '' s/v[:digit:]+\.[:digit:]+\.[:digit:]+/whatever/g ./src/index.html ✗ sed -i '' s/v[:digit:]+[:punct:][:digit:]+[:punct:][:digit:]+/whatever/g ./src/index.html ✗ sed -i '' s/v[:digit:][:punct:][:digit:][:digit:][:digit:][:punct:][:digit:]+/whatever/g ./src/index.html ✗ sed -i '' s/v[:digit:][:punct:][:digit:][:digit:][:digit:][:punct:][:digit:]/whatever/g ./src/index.html ✗ sed -i '' s/v[0-9]+\.[0-9]+.[0-9]+/whatever/g ./src/index.html ✗ sed -i '' s/version=\"[^ \"]+\"/whatever/g ./src/index.html ✗ sed -i '' s/version="[^ "]+"/whatever/g ./src/index.html ✗ sed -i '' s/version=\"[^\"]+\"/whatever/g ./src/index.html ✗ sed -i '' s/version=/whatever=/g ./src/index.html ✗ sed -i '' s/version=\"/whatever=\'/g ./src/index.html ✗ sed -i '' s/version=\"[^\"]/whatever=\"/g ./src/index.html
Help? It is finding the file correctly. When I try versions of this that don't include a regex (see third from the bottom), it replaces correctly, but somehow my regex syntax seems not to be working here.
Or can anyone think of an easier/more reliable way to do this?
sed -i '' "s/version=\"v[0-9]*\.[0-9]*\.[0-9]*\"/whatever=/g" ./src/index.html