I need to extract the name value (Product Finder) from this xml:
File: config.xml
<?xml version="1.0" encoding="utf-8"?>
<widget id="com.abc.app" version="1.3.1" xmlns="http://www.w3.org/ns/widgets" xmlns:android="http://schemas.android.com/apk/res/android" xmlns:cdv="http://cordova.apache.org/ns/1.0" ios-CFBundleVersion="1.3.1.5" android-versionCode="5">
<name>Product Finder</name>
<description>
Description
</description>
</widget>
I've tried:
mles$ cat config.xml | grep '<name>'
<name>Product Finder</name>
Some other answers suggest using grep -oPm1 "(?<=<xmltag>)[^<]+", but that yields an error:
mles$ cat config.xml | grep -oPm1 "(?<=<name>)[^<]+"
usage: grep [-abcDEFGHhIiJLlmnOoqRSsUVvwxZ] [-A num] [-B num] [-C[num]]
[-e pattern] [-f file] [--binary-files=value] [--color=when]
[--context[=num]] [--directories=action] [--label] [--line-buffered]
[--null] [pattern] [file ...]
How can I get the name value? I need a solution without dependencies, so grep would be preferred
grep only finds the line, you have to use an additional tool to extract the name, like sed (not an additional dependency):
grep '<name>' config.xml | sed "s@.*<name>\(.*\)</name>.*@\1@"
What sed does here is takes everything between <name></name> and substitutes the whole line with the found text between the tags
You should use a xml parser, like xmllint for example.
Your xml is invalid and you should fix it, if you can't, use the following regex:
perl -n -e'/<name>(.*)<\/name>/ && print $1' file.xml
# Product Finder
Options:
-n assume "while (<>) { ... }" loop around program
-e program one line of program (several -e's allowed, omit programfile)
Your XML isn't syntactically right. The W3School XML validitor page says so,
error on line 8 column 1. Extra content at the end of the document
Because the header line <?xml version="1.0" encoding="utf-8"?> is a processing instruction that identifies the document as being XML. All XML documents should begin with an XML declaration.
Also, xmllint should be built-into native Mac OS X bash by default in which you can just do
xmllint --xpath "/widget/name/text()" xml
Product Finder
The right formatting for your XML should have been
<?xml version="1.0" encoding="UTF-8"?>
<widget id="123" version="1.3.1">
<name>Product Finder</name>
<description>Description</description>
</widget>
The following bash built-in will do the job but it's not an xml parser
while IFS=\> read -d\< -r tag value || [[ -n $tag ]]; do
if [[ $tag == name ]]; then
echo "$value";
break;
fi;
done < config.xml
