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Shell Script - Filter / Extract Lines {Quick & Dirty}

Hey!

Recently ran into a unique problem - had a csv file that was too large to open! 

Well technically.....it opened....but.....all of the data couldn't be displayed. Then I remembered I had a linux box I use for exactly this type of thing! 

Whipped up a quick & dirty script below. It reads the entire csv file, matches the lines that meet the specified criteria, and writes those line items into a new csv file. 

May not be the best or most efficient, but it works.


See script below:

#!/bin/bash

input_file="data.csv"

output_file="filtered.csv"

# Print header and then matching lines

(head -n 1 "$input_file" && grep "Call Data" "$input_file") > "$output_file"

echo "Done. Header and matched lines saved to $output_file."


Remember... chmod +x 
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