Grep multiple terms and output to individual files

Shell Programming and Scripting
1

Hi all,

I'll like to search a list of tems in a huge file and then output each of the terms to individual files. I know I can use grep -f list main.file to search them but how can I split the output into individual files? Thank you.

2

Can you be more specific with some examples...

3

Try with while loop.

4

For example, the following are the term in my list file:

LR30F04
LW36F03
PI21M21

And I'll like to grep all lines containing LR30F04 into file1.txt, LW36F03 into file2.txt, etc...

Thank you.

---------- Post updated at 12:50 PM ---------- Previous update was at 12:42 PM ----------

Can you elaborate? Sorry, I'm a biologist trying to do some data manipulation here.

5

I guess pamu was refering to below code

$ while read line
 do
 let count=$count+1
 grep -w $line input_file > file${count}
 done < term_file
1 Like
6

What about:

while IFS= read -r pattern; do grep $pattern hugefile >$pattern.txt & done <mylistfile; wait; echo "I'm done"

--
Bye

7

This is working for me. Thank you all for your help.