How to fetch Java version using single line command in Linux How to fetch Java version using single line command in Linux linux linux

How to fetch Java version using single line command in Linux


linux parsing version

  1. Redirect stderr to stdout.
  2. Get first line

  3. Filter the version number.

    java -version 2>&1 | head -n 1 | awk -F '"' '{print $2}'

linux parsing version

This is a slight variation, but PJW's solution didn't quite work for me:

java -version 2>&1 | head -n 1 | cut -d'"' -f2

just cut the string on the delimiter " (double quotes) and get the second field.

linux parsing version

I'd suggest using grep -i version to make sure you get the right line containing the version string. If you have the environment variable JAVA_OPTIONS set, openjdk will print the java options before printing the version information. This version returns 1.6, 1.7 etc.

java -version 2>&1 | grep -i version | cut -d'"' -f2 | cut -d'.' -f1-2

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