bash text file processing

LC_ALL=C fgrep -n -f exclude.csv fav_story_test.csv > linenum.txt
comm -23 notlinenumber.txt exclude.csv 
#get first column
cut -d : -f 1 linenum.txt > linenumber.txt
cut -d : -f 2 linenum.txt > notlinenumber.txt

//slow
cat linenumber.txt | while read line; do head -n $line random_pred.txt | tail -1;  done >> random_diff.txt

//fast
cat linenumber.txt | while read line;
do
sed "${line}q;d" random_pred.txt >> random.txt
done

paste -d ',' user.csv random.txt > random_exclude.csv
cat random_exclude.csv >>concat.csv
sort --field-separator=',' -n concat.csv > sorteduser_output.csv

#remove first column
cut -d , -f 2-  sorteduser_output.csv > output.csv
zip -r output output.csv 

for i in `seq 0 1088`; do gsutil cp gs://dekd/out/recommend$i/part-00000 - ; done