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@marcelbirkner
Created March 7, 2016 13:19
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Read property from properties file within Shell Script
#!/bin/sh
PROPERTY_FILE=apps.properties
function getProperty {
PROP_KEY=$1
PROP_VALUE=`cat $PROPERTY_FILE | grep "$PROP_KEY" | cut -d'=' -f2`
echo $PROP_VALUE
}
echo "# Reading property from $PROPERTY_FILE"
REPOSITORY_URL=$(getProperty "nexus.repository.url")
@arvera
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arvera commented Apr 5, 2023

This script does not work when the variable and the value are the same.

prop1=prop1

@Mike4Online
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The trouble with all these suggestions is that the resulting value could have a newline character.

cat ${PROPERTY_FILE} | grep -w version | cut -d '=' -f 2 | tr -d '\n'

You can also strip out carriage returns as follows:

cat "${PROPERTY_FILE}" | grep -w version | cut -d '=' -f 2 | tr -d '\n\r'

tr will treat the '\n\r' specification as a list of characters to delete (in any order, whether alone or together). Handy if your property file was created on a Windows system.

This script does not work when the variable and the value are the same.

Try this:

cat "${PROPERTY_FILE}" | grep --color=never "prop1=" | cut -d '=' -f 2 | tr -d '\n\r'

Requires the = to immediately follow the property name.

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