Как добавить блок перед определенной строкой в ​​файле с помощью сценария оболочки

Question

Привет, у меня есть XML-файл, как показано ниже.

<Context path="/jasperserver-pro" reloadable="false">
    <Resource name="jdbc/jasperserver" auth="Container" type="javax.sql.DataSource" maxActive="100" maxIdle="30" maxWait="10000" username="jasperdb" password="password" driverClassName="org.postgresql.Driver" accessToUnderlyingConnectionAllowed="true" validationQuery="SELECT 1" testOnBorrow="true" url="jdbc:postgresql://127.0.0.1:5432/jasperserver?useUnicode=true&amp;amp;characterEncoding=UTF-8&amp;amp;autoReconnect=true&amp;amp;autoReconnectForPools=true" factory="com.jaspersoft.jasperserver.tomcat.jndi.JSCommonsBasicDataSourceFactory"/>
    <Resource name="jdbc/sugarcrm" auth="Container" type="javax.sql.DataSource" maxActive="100" maxIdle="30" maxWait="10000" username="jasperdb" password="password" driverClassName="org.postgresql.Driver" accessToUnderlyingConnectionAllowed="true" validationQuery="SELECT 1" testOnBorrow="true" url="jdbc:postgresql://127.0.0.1:5432/sugarcrm?useUnicode=true&amp;amp;characterEncoding=UTF-8&amp;amp;autoReconnect=true&amp;amp;autoReconnectForPools=true" factory="com.jaspersoft.jasperserver.tomcat.jndi.JSCommonsBasicDataSourceFactory"/>
    <Resource name="jdbc/foodmart" auth="Container" type="javax.sql.DataSource" maxActive="100" maxIdle="30" maxWait="10000" username="jasperdb" password="password" driverClassName="org.postgresql.Driver" accessToUnderlyingConnectionAllowed="true" validationQuery="SELECT 1" testOnBorrow="true" url="jdbc:postgresql://127.0.0.1:5432/foodmart?useUnicode=true&amp;amp;characterEncoding=UTF-8&amp;amp;autoReconnect=true&amp;amp;autoReconnectForPools=true" factory="com.jaspersoft.jasperserver.tomcat.jndi.JSCommonsBasicDataSourceFactory"/>
    <Manager pathname=""/>
</Context>

Мне нужно добавить кусок кода перед ""

У меня есть код в переменной, как показано ниже:

    RESOURCE_BEAN="<Resource name=\"resourceBean\" auth=\"Container\" type=\"javax.sql.DataSource\"
                maxActive=\"100\" maxIdle=\"30\" maxWaitMillis=\"10000\"
                username=\"$username\" password=\"$password\"
                driverClassName=\"$classname\" url=\"$url\"/>"

И я использую приведенную ниже команду для замены, но она не работает.

VAR1="<Manager pathname=\"\"/>"

echo "$VAR1"

sed  '/${VAR1}/i ${RESOURCE_BEAN}' context.xml

Может кто-нибудь помочь мне в этом.

Answer 1

Во-первых, вам нужно также избежать косых черт в переменных:

RESOURCE_BEAN="<Resource name=\"resourceBean\" auth=\"Container\" type=\"javax.sql.DataSource\" maxActive=\"100\" maxIdle=\"30\" maxWaitMillis=\"10000\" username=\"$username\" password=\"$password\" driverClassName=\"$classname\" url=\"$url\"\/>"
VAR1="<Manager pathname=\"\"\/>"

Тогда этот sed должен работать для Вас:

sed 's/'"${VAR1}"'/'"${RESOURCE_BEAN}"'/'

Тест:

$ cat context.xml
<Context path="/jasperserver-pro" reloadable="false">
    <Resource name="jdbc/jasperserver" auth="Container" type="javax.sql.DataSource" maxActive="100" maxIdle="30" maxWait="10000" username="jasperdb" password="password" driverClassName="org.postgresql.Driver" accessToUnderlyingConnectionAllowed="true" validationQuery="SELECT 1" testOnBorrow="true" url="jdbc:postgresql://127.0.0.1:5432/jasperserver?useUnicode=true&amp;amp;characterEncoding=UTF-8&amp;amp;autoReconnect=true&amp;amp;autoReconnectForPools=true" factory="com.jaspersoft.jasperserver.tomcat.jndi.JSCommonsBasicDataSourceFactory"/>
    <Resource name="jdbc/sugarcrm" auth="Container" type="javax.sql.DataSource" maxActive="100" maxIdle="30" maxWait="10000" username="jasperdb" password="password" driverClassName="org.postgresql.Driver" accessToUnderlyingConnectionAllowed="true" validationQuery="SELECT 1" testOnBorrow="true" url="jdbc:postgresql://127.0.0.1:5432/sugarcrm?useUnicode=true&amp;amp;characterEncoding=UTF-8&amp;amp;autoReconnect=true&amp;amp;autoReconnectForPools=true" factory="com.jaspersoft.jasperserver.tomcat.jndi.JSCommonsBasicDataSourceFactory"/>
    <Resource name="jdbc/foodmart" auth="Container" type="javax.sql.DataSource" maxActive="100" maxIdle="30" maxWait="10000" username="jasperdb" password="password" driverClassName="org.postgresql.Driver" accessToUnderlyingConnectionAllowed="true" validationQuery="SELECT 1" testOnBorrow="true" url="jdbc:postgresql://127.0.0.1:5432/foodmart?useUnicode=true&amp;amp;characterEncoding=UTF-8&amp;amp;autoReconnect=true&amp;amp;autoReconnectForPools=true" factory="com.jaspersoft.jasperserver.tomcat.jndi.JSCommonsBasicDataSourceFactory"/>
    <Manager pathname=""/>
</Context>

$ cat context.xml | sed 's/'"${VAR1}"'/'"${RESOURCE_BEAN}"'/'
    <Context path="/jasperserver-pro" reloadable="false">
        <Resource name="jdbc/jasperserver" auth="Container" type="javax.sql.DataSource" maxActive="100" maxIdle="30" maxWait="10000" username="jasperdb" password="password" driverClassName="org.postgresql.Driver" accessToUnderlyingConnectionAllowed="true" validationQuery="SELECT 1" testOnBorrow="true" url="jdbc:postgresql://127.0.0.1:5432/jasperserver?useUnicode=true&amp;amp;characterEncoding=UTF-8&amp;amp;autoReconnect=true&amp;amp;autoReconnectForPools=true" factory="com.jaspersoft.jasperserver.tomcat.jndi.JSCommonsBasicDataSourceFactory"/>
        <Resource name="jdbc/sugarcrm" auth="Container" type="javax.sql.DataSource" maxActive="100" maxIdle="30" maxWait="10000" username="jasperdb" password="password" driverClassName="org.postgresql.Driver" accessToUnderlyingConnectionAllowed="true" validationQuery="SELECT 1" testOnBorrow="true" url="jdbc:postgresql://127.0.0.1:5432/sugarcrm?useUnicode=true&amp;amp;characterEncoding=UTF-8&amp;amp;autoReconnect=true&amp;amp;autoReconnectForPools=true" factory="com.jaspersoft.jasperserver.tomcat.jndi.JSCommonsBasicDataSourceFactory"/>
        <Resource name="jdbc/foodmart" auth="Container" type="javax.sql.DataSource" maxActive="100" maxIdle="30" maxWait="10000" username="jasperdb" password="password" driverClassName="org.postgresql.Driver" accessToUnderlyingConnectionAllowed="true" validationQuery="SELECT 1" testOnBorrow="true" url="jdbc:postgresql://127.0.0.1:5432/foodmart?useUnicode=true&amp;amp;characterEncoding=UTF-8&amp;amp;autoReconnect=true&amp;amp;autoReconnectForPools=true" factory="com.jaspersoft.jasperserver.tomcat.jndi.JSCommonsBasicDataSourceFactory"/>
        <Resource name="resourceBean" auth="Container" type="javax.sql.DataSource" maxActive="100" maxIdle="30" maxWaitMillis="10000" username="" password="" driverClassName="" url=""/>
    </Context>

Если вы не хотите экранировать косые черты в своих переменных, вы должны заменить разделитель sed на каналы, например:

sed 's|'"${VAR1}"'|'"${RESOURCE_BEAN}"'|'