Install xls2csv
yum -y install xls2csv
To convert your xls file to csv, just type this command:
convertxls2csv -x filename.xls -c filename.csv
This script is very useful if you have a lot of excel files to convert. This will help you save a lot of time than converting it one by one.
#!/bin/bash
for files in *.xls
do
convertxls2csv -x "$files" -c "${files%.*}.csv"
done