Shell Programming and Scripting

USERID;COG;DESCR;FIL;OFF
user001;user;test1;001;A01
user002;user;test2;002;A02
user0003;user;test3;003;A03
user004;user;test4;004;A04
user0005;user;test5;005;A05

awk -F";" 'length($1) > 7 {print > "log";next} 1' file > TMP && mv TMP file

#!/bin/bash

rm -f log
ex infile << EDIT
$(
w="q!"
while IFS=";" read a b
do
   [[ ${#a} -gt 7 ]] && {
      echo "$a;$b" >> log
      echo "/^$a;/d"
      w="wq!"
   }
done < infile
echo "$w"
)
EDIT

#!/bin/bash 
rm -f log
rm -f output
while IFS=";" read a b 
do    
   if [ ${#a} -gt 7 ]
   then
      echo "$a;$b" >> log
   else
      echo "$a;$b" >>output
   fi
done < infile

mv outfile infile