UNIX for Dummies Questions & Answers

Actually is doesn't go into a loop but you are right, that does not work. It hangs forever on the first grep, you missed something when transcribing the post:

Code:

for file in *file_name.txt ; do
   grep -v 'Total records:' $file > ${file}_new
   mv ${file}_new $file
done

Errrr....How Stupid of me....But Reborg when i run the script,it actually opens the file and content is also displayed on the terminal.How do i avoid this? because the file has come where around a million records.

i think there is problem with the loop.Because when i run the grep command separately,it does open the file to scan for 'Total records' but it removes the trailer

Thanks for your help.

HI Reborg,

Sorry,it is working fine now.Thanks a lot friend.

Kumar

Code:

for i in `ls -lrt *file_name.txt|awk '{print $9}'`

Mr. Reborg !! What is the problem with this statement ?? works fine for me.

you can read post 5

I doubt if grepping is the efficient way here as there are million of records. Why not use the sed approach, which as I understand will not require scan the whole file when you are only interested in last line.