How to use variables in 'sed' command?

Question

Tried with following code:

revision=(revision="5.0")

sed -i "s/revision="1.0"/${revision}/g" /File-path/composite.xml)

But In the file the contents of revision="1.0" is replaced by ${revision}

The symptom you're describing is not consistent with your command; the symptom suggests that you used single quotes around the sed script. — mklement0
– mklement0, Commented Feb 24, 2016 at 6:03

Alex Kapustin · Accepted Answer · 2016-02-24 05:59:09Z

1

Need to quote: "

sed -i "s/revision=\"1.0\"/${revision}/g" /File-path/composite.xml

answered Feb 24, 2016 at 5:59

Alex Kapustin

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1 Comment

But In the file the contents of revision="1.0" is replaced by ${revision}, he made typo in his question.

techno · Accepted Answer · 2016-02-24 06:48:09Z

0

My purpose:

revision='revision="5.0"'

sed -e "s/revision=\"[0-9.]*\"/${revision}/g" /File-path/composite.xml

or if you want file /File-path/composite.xml to be modified:

sed -e "s/revision=\"[0-9.]*\"/${revision}/g" -i /File-path/composite.xml

or even:

sed -e "s/revision=\"[0-9.]*\"/${revision}/g" -i.bak /File-path/composite.xml

answered Feb 24, 2016 at 6:48

techno

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