UNIX for Dummies Questions & Answers

abc_01012011.csv
def_01012011.csv
xyz_01012011.csv

abc.csv
def.csv
xyz.csv

fname=${filename%%.*}
newname=sed 's/\(.*[a-zA-Z]\).*/\1/g' ${fname}
mv ${filename} /destination folder/${newname}.csv

for f in *.csv; do
  mv -- "$f" "dest/${f%%_*}.csv"  
done

abc_01012011.csv
def_01012011.csv
xyz_01012011.csv

abc_report_01012011.csv
def_test_01012011.csv
xyz_post_01012011.csv

abc_report.csv
def_test.csv
xyz_post.csv

for f in *.csv; do
  mv -- "$f" "dest/${f%_*}.csv"  
done

ls -1  *.csv | awk '{print "mv " $1 " newdir/"$1}' | sed -E 's/([[:alpha:]]+)_[^_]+(\.csv)/\1\2/2'  | csh

for file in *.csv
do
file_new=`echo ${file} |awk 'BEGIN {FS="_"} {print $1 "_" $2 ".csv"}'`
mv ${file} ${file_new}
done