Shell Programming and Scripting

sed -i '5d' file

#!/bin/bash

line="1"
wholelines="38867934"
while [ $line -lt $wholelines ]; do
length=$(expr length `sed $line'q;d' list`)
if [ $length -lt "5" ]; then
sed -i $line' d' list
wholelines=$((wholelines-1))
else
line=$(($line+1))
fi
done

awk 'length>4' list > list2

while read line; do
   if (( ${#line}>4 )); then
     echo $line
   fi
done<list>list2