That's a bash script that invokes a Java class - MahoutDriver which reads the props file mentioned earlier. The props files is a mapping of the commandName to the actual Java program.
For Eg:- seq2sparse would be mapped to SparseVectorsFromSequenceFiles in the props. On Wednesday, January 29, 2014 6:16 PM, Andrew Musselman <andrew.mussel...@gmail.com> wrote: Those aliases are defined in src/conf/driver.classes.default.props. That language is shell-scripting, e.g. bash. On Wed, Jan 29, 2014 at 2:15 PM, qiaoresearcher <qiaoresearc...@gmail.com>wrote: > when run the command like: > > mahout seq2sparse -i inputfile -o outputfile > > where is the command seq2sparse defined? how does the system know to > actually run the SparseFileFromSequenceFile class? > > what is the language used in the command Mahout such as the language given > below: > > ======================================== > > THIS="$0" > while [ -h "$THIS" ]; do > ls=`ls -ld "$THIS"` > link=`expr "$ls" : '.*-> \(.*\)$'` > if expr "$link" : '.*/.*' > /dev/null; then > THIS="$link" > else > THIS=`dirname "$THIS"`/"$link" > fi > done > > IS_CORE=0 > if [ "$1" == "-core" ] ; then > IS_CORE=1 > shift > fi > > if [ "$MAHOUT_CORE" != "" ]; then > IS_CORE=1 > fi > > # some directories > THIS_DIR=`dirname "$THIS"` > MAHOUT_HOME=`cd "$THIS_DIR/.." ; pwd` > > # some Java parameters > if [ "$MAHOUT_JAVA_HOME" != "" ]; then > #echo "run java in $MAHOUT_JAVA_HOME" > JAVA_HOME=$MAHOUT_JAVA_HOME > fi >
