How to add a new tag in xml file using shell scripting?

Question

I have an xml file like

<changeSet id="1" author="naveen" dbms="oracle">
      <sqlFile path="/appl/Liquibase/sql/IntialVersion.sql" />
    </changeSet>
    <changeSet id="2" author="naveen"  dbms="oracle">
      <sqlFile path="/appl/Liquibase/sql/FirstRev.sql" />
    </changeSet>
    <changeSet id="3" author="naveen"  dbms="oracle">
      <sqlFile path="/appl/Liquibase/sql/23_12_2011.sql" />
    </changeSet>

I want to add a new changeSet tag like below using shell scripting

 <changeSet id="4" author="naveen"  dbms="oracle">
      <sqlFile path="/appl/Liquibase/sql/24_12_2011.sql" />
    </changeSet>

Is there any simple way to do this in shell scripting? I have to change id and sql file name also in the tag.

echo '<newtag />' >> file.xml. It won't be valid, but it's a new tag in the xml file... — Marc B
– Marc B, Commented Jan 2, 2012 at 16:12

kubanczyk · Accepted Answer · 2012-01-03 11:18:32Z

Quick, dirty, unreliable. Does not parse XML - this just assumes that your input file will always retain the current line formatting.

cat test.xml

<intro>
a\b&c;
d$e
</intro>
<changeSet id="1" author="naveen" dbms="oracle">
      <sqlFile path="/appl/Liquibase/sql/IntialVersion.sql" />
    </changeSet>
    <changeSet id="2" author="naveen"  dbms="oracle">
      <sqlFile path="/appl/Liquibase/sql/FirstRev.sql" />
    </changeSet>
    <changeSet id="3" author="naveen"  dbms="oracle">
      <sqlFile path="/appl/Liquibase/sql/23_12_2011.sql" />
    </changeSet>
<outro>
</outro>

Determine the line number of last changeSet tag

line_no="`grep -n '</changeSet>$' test.xml | cut -f1 -d: | tail -n 1`" ; echo "$line_no"

Add new changeSet

[[ -n "$line_no" ]] && sed "$line_no"'s#$#\n<changeSet id="4" author="naveen"  dbms="oracle">\n  <sqlFile path="/appl/Liquibase/sql/24_12_2011.sql" />\n</changeSet>#' test.xml > test.xml.new

cat test.xml.new

<intro>
a\b&c;
d$e
</intro>
<changeSet id="1" author="naveen" dbms="oracle">
      <sqlFile path="/appl/Liquibase/sql/IntialVersion.sql" />
    </changeSet>
    <changeSet id="2" author="naveen"  dbms="oracle">
      <sqlFile path="/appl/Liquibase/sql/FirstRev.sql" />
    </changeSet>
    <changeSet id="3" author="naveen"  dbms="oracle">
      <sqlFile path="/appl/Liquibase/sql/23_12_2011.sql" />
    </changeSet>
<changeSet id="4" author="naveen"  dbms="oracle">
  <sqlFile path="/appl/Liquibase/sql/24_12_2011.sql" />
</changeSet>
<outro>
</outro>

Andrey Adamovich · Accepted Answer · 2012-01-02 16:25:49Z

0

It's not really a well-formed XML file, but if you just want to append to the end of the file, then use echo or cat command and send its output to the end of the file with >> operator.

answered Jan 2, 2012 at 16:25

Andrey Adamovich

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2 Comments

Naveen Sangwan Over a year ago

I dont want to add it in the last. It is not full xml. It is a part of my full xml file. I want to add this tag right after the previous tag in between the xml file with the use of shell script. any help??

Andrey Adamovich Over a year ago

Can you show your full xml structure? It will be easier to help.

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